./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_compare_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_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1 --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 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:53:32,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:53:32,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 07:53:32,665 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:53:32,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:53:32,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:53:32,690 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:53:32,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:53:32,690 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:53:32,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:53:32,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:53:32,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:53:32,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:53:32,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:53:32,691 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:53:32,691 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:53:32,691 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:53:32,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:53:32,692 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:53:32,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:53:32,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:53:32,693 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:53:32,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:53:32,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:53:32,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:53:32,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:53:32,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:53:32,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:53:32,693 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:53:32,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:53:32,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:53:32,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:53:32,694 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:53:32,694 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:53:32,694 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:53:32,694 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:53:32,694 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_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1 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 -> 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d [2024-12-02 07:53:32,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:53:32,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:53:32,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:53:32,970 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:53:32,970 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:53:32,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2024-12-02 07:53:35,643 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/data/f584856ad/b5a731bd7c7d4d619a100fcbb5c1750b/FLAG6ddb460ac [2024-12-02 07:53:36,054 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:53:36,054 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i [2024-12-02 07:53:36,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/data/f584856ad/b5a731bd7c7d4d619a100fcbb5c1750b/FLAG6ddb460ac [2024-12-02 07:53:36,200 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/data/f584856ad/b5a731bd7c7d4d619a100fcbb5c1750b [2024-12-02 07:53:36,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:53:36,204 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:53:36,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:53:36,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:53:36,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:53:36,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:53:36" (1/1) ... [2024-12-02 07:53:36,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394c6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:36, skipping insertion in model container [2024-12-02 07:53:36,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:53:36" (1/1) ... [2024-12-02 07:53:36,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:53:36,544 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_a8b2eeb5-185e-4e62-9a19-8857c0548a74/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2024-12-02 07:53:36,551 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_a8b2eeb5-185e-4e62-9a19-8857c0548a74/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2024-12-02 07:53:37,515 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:37,516 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:37,516 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:37,517 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:37,518 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:37,532 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:37,532 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:37,534 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:37,535 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,332 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,332 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:53:38,456 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:53:38,468 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_a8b2eeb5-185e-4e62-9a19-8857c0548a74/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4492,4505] [2024-12-02 07:53:38,468 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_a8b2eeb5-185e-4e62-9a19-8857c0548a74/sv-benchmarks/c/aws-c-common/aws_string_compare_harness.i[4552,4565] [2024-12-02 07:53:38,501 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,502 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,502 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,503 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,503 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,509 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,509 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,510 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,510 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,637 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2024-12-02 07:53:38,638 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,638 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:53:38,648 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2024-12-02 07:53:38,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:53:38,857 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:53:38,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38 WrapperNode [2024-12-02 07:53:38,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:53:38,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:53:38,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:53:38,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:53:38,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:38,929 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:38,989 INFO L138 Inliner]: procedures = 682, calls = 2786, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 823 [2024-12-02 07:53:38,990 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:53:38,990 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:53:38,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:53:38,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:53:39,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,002 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,009 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,068 INFO L175 MemorySlicer]: Split 529 memory accesses to 6 slices as follows [2, 257, 238, 16, 11, 5]. 49 percent of accesses are in the largest equivalence class. The 29 initializations are split as follows [2, 0, 6, 16, 0, 5]. The 492 writes are split as follows [0, 257, 232, 0, 3, 0]. [2024-12-02 07:53:39,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,103 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,119 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:53:39,130 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:53:39,130 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:53:39,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:53:39,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (1/1) ... [2024-12-02 07:53:39,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:53:39,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:53:39,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:53:39,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:53:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-12-02 07:53:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-12-02 07:53:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_compare [2024-12-02 07:53:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_compare [2024-12-02 07:53:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-12-02 07:53:39,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-12-02 07:53:39,193 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 07:53:39,194 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 07:53:39,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 07:53:39,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:53:39,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 07:53:39,195 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 07:53:39,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2024-12-02 07:53:39,196 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:53:39,196 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 07:53:39,196 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 07:53:39,196 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 07:53:39,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 07:53:39,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 07:53:39,446 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:53:39,448 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:53:46,775 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-12-02 07:53:46,776 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:53:46,790 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:53:46,791 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 07:53:46,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:46 BoogieIcfgContainer [2024-12-02 07:53:46,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:53:46,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:53:46,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:53:46,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:53:46,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:53:36" (1/3) ... [2024-12-02 07:53:46,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6f7729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:53:46, skipping insertion in model container [2024-12-02 07:53:46,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:53:38" (2/3) ... [2024-12-02 07:53:46,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6f7729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:53:46, skipping insertion in model container [2024-12-02 07:53:46,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:53:46" (3/3) ... [2024-12-02 07:53:46,801 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_compare_harness.i [2024-12-02 07:53:46,820 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:53:46,823 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_compare_harness.i that has 11 procedures, 121 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 07:53:46,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:53:46,897 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;@136e568f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:53:46,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:53:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 77 states have internal predecessors, (97), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-12-02 07:53:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 07:53:46,912 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:53:46,913 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 07:53:46,913 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:53:46,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:53:46,919 INFO L85 PathProgramCache]: Analyzing trace with hash 127762490, now seen corresponding path program 1 times [2024-12-02 07:53:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:53:46,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746581930] [2024-12-02 07:53:46,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:46,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:55:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:55:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 07:55:10,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:55:10,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746581930] [2024-12-02 07:55:11,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746581930] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:55:11,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841084376] [2024-12-02 07:55:11,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:55:11,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:55:11,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:55:11,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:55:11,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:56:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:37,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 7555 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:56:37,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:56:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 07:56:37,999 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:56:38,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841084376] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:38,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:56:38,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 07:56:38,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435163839] [2024-12-02 07:56:38,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:38,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:56:38,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:38,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:56:38,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:56:38,025 INFO L87 Difference]: Start difference. First operand has 121 states, 76 states have (on average 1.2763157894736843) internal successors, (97), 77 states have internal predecessors, (97), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 07:56:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:56:38,058 INFO L93 Difference]: Finished difference Result 237 states and 336 transitions. [2024-12-02 07:56:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:56:38,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2024-12-02 07:56:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:56:38,067 INFO L225 Difference]: With dead ends: 237 [2024-12-02 07:56:38,067 INFO L226 Difference]: Without dead ends: 116 [2024-12-02 07:56:38,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:56:38,073 INFO L435 NwaCegarLoop]: 161 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, 161 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 [2024-12-02 07:56:38,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:56:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-12-02 07:56:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-12-02 07:56:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 72 states have (on average 1.25) internal successors, (90), 73 states have internal predecessors, (90), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-12-02 07:56:38,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 155 transitions. [2024-12-02 07:56:38,111 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 155 transitions. Word has length 50 [2024-12-02 07:56:38,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:56:38,112 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 155 transitions. [2024-12-02 07:56:38,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 07:56:38,113 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 155 transitions. [2024-12-02 07:56:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 07:56:38,115 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:56:38,115 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 07:56:38,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:56:38,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b2eeb5-185e-4e62-9a19-8857c0548a74/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 07:56:38,316 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:56:38,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash -460652934, now seen corresponding path program 1 times [2024-12-02 07:56:38,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:38,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877749358] [2024-12-02 07:56:38,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:38,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:04,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 07:58:06,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:06,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877749358] [2024-12-02 07:58:06,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877749358] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:58:06,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:58:06,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:58:06,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093707585] [2024-12-02 07:58:06,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:58:06,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:58:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:58:06,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:58:06,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:58:06,203 INFO L87 Difference]: Start difference. First operand 116 states and 155 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 07:58:06,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:58:06,360 INFO L93 Difference]: Finished difference Result 167 states and 222 transitions. [2024-12-02 07:58:06,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:58:06,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2024-12-02 07:58:06,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:58:06,363 INFO L225 Difference]: With dead ends: 167 [2024-12-02 07:58:06,363 INFO L226 Difference]: Without dead ends: 131 [2024-12-02 07:58:06,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:58:06,364 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 4 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:58:06,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 447 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:58:06,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-12-02 07:58:06,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2024-12-02 07:58:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 83 states have internal predecessors, (102), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-12-02 07:58:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 177 transitions. [2024-12-02 07:58:06,383 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 177 transitions. Word has length 50 [2024-12-02 07:58:06,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:58:06,383 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 177 transitions. [2024-12-02 07:58:06,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 07:58:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 177 transitions. [2024-12-02 07:58:06,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:58:06,386 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:58:06,386 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 07:58:06,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:58:06,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:58:06,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:58:06,386 INFO L85 PathProgramCache]: Analyzing trace with hash 578733760, now seen corresponding path program 1 times [2024-12-02 07:58:06,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:58:06,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988143340] [2024-12-02 07:58:06,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:06,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:59:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:31,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 07:59:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:59:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988143340] [2024-12-02 07:59:31,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988143340] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:59:31,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:59:31,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:59:31,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018731113] [2024-12-02 07:59:31,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:59:31,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:59:31,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:59:31,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:59:31,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:59:31,512 INFO L87 Difference]: Start difference. First operand 131 states and 177 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 07:59:31,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:59:31,645 INFO L93 Difference]: Finished difference Result 158 states and 211 transitions. [2024-12-02 07:59:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:59:31,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2024-12-02 07:59:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:59:31,647 INFO L225 Difference]: With dead ends: 158 [2024-12-02 07:59:31,647 INFO L226 Difference]: Without dead ends: 137 [2024-12-02 07:59:31,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:59:31,648 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:59:31,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 450 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:59:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-12-02 07:59:31,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-12-02 07:59:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 87 states have internal predecessors, (107), 38 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (39), 39 states have call predecessors, (39), 37 states have call successors, (39) [2024-12-02 07:59:31,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2024-12-02 07:59:31,662 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 59 [2024-12-02 07:59:31,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:59:31,663 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2024-12-02 07:59:31,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 07:59:31,663 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2024-12-02 07:59:31,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 07:59:31,665 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:59:31,666 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 07:59:31,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:59:31,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:59:31,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:59:31,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1226262184, now seen corresponding path program 1 times [2024-12-02 07:59:31,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:59:31,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015628808] [2024-12-02 07:59:31,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:59:31,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:59,645 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 08:00:59,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:59,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015628808] [2024-12-02 08:00:59,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015628808] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:59,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:59,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 08:00:59,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446989545] [2024-12-02 08:00:59,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:59,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 08:00:59,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:59,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 08:00:59,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:00:59,647 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2024-12-02 08:01:01,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:01:01,183 INFO L93 Difference]: Finished difference Result 162 states and 221 transitions. [2024-12-02 08:01:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 08:01:01,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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 60 [2024-12-02 08:01:01,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:01:01,186 INFO L225 Difference]: With dead ends: 162 [2024-12-02 08:01:01,186 INFO L226 Difference]: Without dead ends: 155 [2024-12-02 08:01:01,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:01:01,187 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 17 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:01:01,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1076 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 08:01:01,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-12-02 08:01:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2024-12-02 08:01:01,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 100 states have (on average 1.22) internal successors, (122), 101 states have internal predecessors, (122), 41 states have call successors, (41), 10 states have call predecessors, (41), 12 states have return successors, (50), 42 states have call predecessors, (50), 40 states have call successors, (50) [2024-12-02 08:01:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 213 transitions. [2024-12-02 08:01:01,207 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 213 transitions. Word has length 60 [2024-12-02 08:01:01,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:01:01,207 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 213 transitions. [2024-12-02 08:01:01,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2024-12-02 08:01:01,208 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 213 transitions. [2024-12-02 08:01:01,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 08:01:01,210 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:01:01,210 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 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] [2024-12-02 08:01:01,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:01:01,210 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:01:01,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:01:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash -416915558, now seen corresponding path program 1 times [2024-12-02 08:01:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:01:01,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941687315] [2024-12-02 08:01:01,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:01:01,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:02:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:02:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 08:02:28,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:02:28,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941687315] [2024-12-02 08:02:28,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941687315] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:02:28,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:02:28,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 08:02:28,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386055635] [2024-12-02 08:02:28,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:02:28,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 08:02:28,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:02:28,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 08:02:28,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-12-02 08:02:28,251 INFO L87 Difference]: Start difference. First operand 154 states and 213 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2024-12-02 08:02:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:02:29,167 INFO L93 Difference]: Finished difference Result 176 states and 241 transitions. [2024-12-02 08:02:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 08:02:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 60 [2024-12-02 08:02:29,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:02:29,170 INFO L225 Difference]: With dead ends: 176 [2024-12-02 08:02:29,170 INFO L226 Difference]: Without dead ends: 149 [2024-12-02 08:02:29,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-02 08:02:29,171 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 19 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 08:02:29,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 833 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 08:02:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-12-02 08:02:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2024-12-02 08:02:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 90 states have internal predecessors, (109), 40 states have call successors, (40), 10 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 38 states have call successors, (40) [2024-12-02 08:02:29,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 189 transitions. [2024-12-02 08:02:29,181 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 189 transitions. Word has length 60 [2024-12-02 08:02:29,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:02:29,181 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 189 transitions. [2024-12-02 08:02:29,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2024-12-02 08:02:29,182 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 189 transitions. [2024-12-02 08:02:29,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 08:02:29,183 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:02:29,183 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:02:29,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:02:29,183 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:02:29,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:02:29,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2007179064, now seen corresponding path program 1 times [2024-12-02 08:02:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:02:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672958545] [2024-12-02 08:02:29,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:02:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:03:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:03:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-12-02 08:03:55,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:03:55,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672958545] [2024-12-02 08:03:55,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672958545] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:03:55,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:03:55,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 08:03:55,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853915785] [2024-12-02 08:03:55,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:03:55,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 08:03:55,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:03:55,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 08:03:55,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:03:55,655 INFO L87 Difference]: Start difference. First operand 141 states and 189 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 10 states have internal predecessors, (40), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 08:03:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:03:56,670 INFO L93 Difference]: Finished difference Result 211 states and 287 transitions. [2024-12-02 08:03:56,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 08:03:56,671 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 10 states have internal predecessors, (40), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) Word has length 84 [2024-12-02 08:03:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:03:56,673 INFO L225 Difference]: With dead ends: 211 [2024-12-02 08:03:56,673 INFO L226 Difference]: Without dead ends: 170 [2024-12-02 08:03:56,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-12-02 08:03:56,675 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 34 mSDsluCounter, 1719 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:03:56,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1899 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 08:03:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-12-02 08:03:56,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2024-12-02 08:03:56,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 104 states have (on average 1.25) internal successors, (130), 107 states have internal predecessors, (130), 49 states have call successors, (49), 10 states have call predecessors, (49), 13 states have return successors, (51), 49 states have call predecessors, (51), 47 states have call successors, (51) [2024-12-02 08:03:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2024-12-02 08:03:56,690 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 84 [2024-12-02 08:03:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:03:56,691 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2024-12-02 08:03:56,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 10 states have internal predecessors, (40), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 08:03:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2024-12-02 08:03:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 08:03:56,693 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:03:56,693 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:03:56,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:03:56,694 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:03:56,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:03:56,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1851260532, now seen corresponding path program 1 times [2024-12-02 08:03:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:03:56,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140284877] [2024-12-02 08:03:56,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:03:56,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:05:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:05:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 08:05:34,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:05:34,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140284877] [2024-12-02 08:05:34,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140284877] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:05:34,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:05:34,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 08:05:34,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203585256] [2024-12-02 08:05:34,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:05:34,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 08:05:34,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:05:34,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 08:05:34,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 08:05:34,608 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 08:05:37,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:05:37,472 INFO L93 Difference]: Finished difference Result 207 states and 305 transitions. [2024-12-02 08:05:37,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 08:05:37,473 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) Word has length 89 [2024-12-02 08:05:37,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:05:37,474 INFO L225 Difference]: With dead ends: 207 [2024-12-02 08:05:37,474 INFO L226 Difference]: Without dead ends: 200 [2024-12-02 08:05:37,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-12-02 08:05:37,475 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 23 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:05:37,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1940 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 08:05:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-12-02 08:05:37,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 196. [2024-12-02 08:05:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 123 states have (on average 1.2439024390243902) internal successors, (153), 127 states have internal predecessors, (153), 58 states have call successors, (58), 10 states have call predecessors, (58), 14 states have return successors, (72), 58 states have call predecessors, (72), 56 states have call successors, (72) [2024-12-02 08:05:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 283 transitions. [2024-12-02 08:05:37,494 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 283 transitions. Word has length 89 [2024-12-02 08:05:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:05:37,494 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 283 transitions. [2024-12-02 08:05:37,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 12 states have internal predecessors, (47), 4 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 3 states have call successors, (13) [2024-12-02 08:05:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 283 transitions. [2024-12-02 08:05:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-12-02 08:05:37,496 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:05:37,497 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:05:37,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:05:37,497 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:05:37,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:05:37,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1634360138, now seen corresponding path program 1 times [2024-12-02 08:05:37,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:05:37,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505921894] [2024-12-02 08:05:37,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:05:37,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:07:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat