./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_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_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/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_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/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_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/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 b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:46:05,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:46:05,112 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 07:46:05,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:46:05,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:46:05,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:46:05,137 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:46:05,137 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:46:05,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:46:05,138 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:46:05,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:46:05,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:46:05,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:46:05,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:46:05,139 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:46:05,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:46:05,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:46:05,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:46:05,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:46:05,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:46:05,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:46:05,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:46:05,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:46:05,139 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:46:05,140 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:46:05,140 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:46:05,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:46:05,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:46:05,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:46:05,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:46:05,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:46:05,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:46:05,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:46:05,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:46:05,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:46:05,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:46:05,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:46:05,141 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:46:05,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:46:05,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:46:05,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:46:05,141 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:46:05,141 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:46:05,142 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:46:05,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:46:05,142 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_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/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 -> b64b813c3d856efe8cd859d380d09d4b682c371a0a165a5a5fe0d11dc206dad7 [2024-12-02 07:46:05,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:46:05,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:46:05,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:46:05,355 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:46:05,356 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:46:05,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2024-12-02 07:46:08,062 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/data/dbd97a17d/f93de9f5fccc42bc8371b8a4ad439adf/FLAG9966f1604 [2024-12-02 07:46:08,473 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:46:08,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i [2024-12-02 07:46:08,505 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/data/dbd97a17d/f93de9f5fccc42bc8371b8a4ad439adf/FLAG9966f1604 [2024-12-02 07:46:08,519 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/data/dbd97a17d/f93de9f5fccc42bc8371b8a4ad439adf [2024-12-02 07:46:08,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:46:08,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:46:08,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:46:08,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:46:08,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:46:08,529 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:46:08" (1/1) ... [2024-12-02 07:46:08,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28cab7ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:08, skipping insertion in model container [2024-12-02 07:46:08,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:46:08" (1/1) ... [2024-12-02 07:46:08,605 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:46:08,819 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_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2024-12-02 07:46:08,825 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_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2024-12-02 07:46:09,652 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:09,653 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:09,653 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:09,654 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:09,655 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:09,670 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:09,670 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:09,672 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:09,673 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,328 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,328 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:46:10,383 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:46:10,396 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_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4493,4506] [2024-12-02 07:46:10,396 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_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/sv-benchmarks/c/aws-c-common/aws_string_eq_c_str_harness.i[4553,4566] [2024-12-02 07:46:10,436 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,437 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,437 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,437 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,438 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,445 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,445 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,446 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,446 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,556 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8588] [2024-12-02 07:46:10,557 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,558 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 07:46:10,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:46:10,741 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:46:10,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10 WrapperNode [2024-12-02 07:46:10,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:46:10,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:46:10,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:46:10,743 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:46:10,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,853 INFO L138 Inliner]: procedures = 670, calls = 2270, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 396 [2024-12-02 07:46:10,854 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:46:10,854 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:46:10,854 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:46:10,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:46:10,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,890 INFO L175 MemorySlicer]: Split 279 memory accesses to 4 slices as follows [2, 257, 5, 15]. 92 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 260 writes are split as follows [0, 257, 0, 3]. [2024-12-02 07:46:10,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,911 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,917 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,922 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:46:10,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:46:10,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:46:10,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:46:10,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (1/1) ... [2024-12-02 07:46:10,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:46:10,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:46:10,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:46:10,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:46:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_c_str [2024-12-02 07:46:10,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_c_str [2024-12-02 07:46:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-12-02 07:46:10,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-12-02 07:46:10,988 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2024-12-02 07:46:10,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 07:46:10,989 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 07:46:10,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 07:46:10,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:46:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 07:46:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 07:46:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 07:46:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 07:46:10,990 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 07:46:10,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 07:46:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:46:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:46:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 07:46:10,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 07:46:11,195 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:46:11,196 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:46:17,775 INFO L? ?]: Removed 93 outVars from TransFormulas that were not future-live. [2024-12-02 07:46:17,775 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:46:17,784 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:46:17,784 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 07:46:17,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:46:17 BoogieIcfgContainer [2024-12-02 07:46:17,785 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:46:17,787 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:46:17,787 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:46:17,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:46:17,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:46:08" (1/3) ... [2024-12-02 07:46:17,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67db3e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:46:17, skipping insertion in model container [2024-12-02 07:46:17,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:46:10" (2/3) ... [2024-12-02 07:46:17,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67db3e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:46:17, skipping insertion in model container [2024-12-02 07:46:17,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:46:17" (3/3) ... [2024-12-02 07:46:17,793 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_eq_c_str_harness.i [2024-12-02 07:46:17,803 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:46:17,804 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_eq_c_str_harness.i that has 10 procedures, 107 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 07:46:17,844 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:46:17,854 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;@23b12282, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:46:17,854 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 07:46:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 07:46:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 07:46:17,863 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:46:17,864 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:46:17,864 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:46:17,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:46:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1307493695, now seen corresponding path program 1 times [2024-12-02 07:46:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:46:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584160758] [2024-12-02 07:46:17,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:46:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:47:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:47:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:47:13,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:47:13,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584160758] [2024-12-02 07:47:13,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584160758] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:13,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:13,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:47:13,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176579249] [2024-12-02 07:47:13,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:13,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:47:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:47:13,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:47:13,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:47:13,701 INFO L87 Difference]: Start difference. First operand has 107 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:47:13,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:47:13,728 INFO L93 Difference]: Finished difference Result 205 states and 281 transitions. [2024-12-02 07:47:13,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:47:13,730 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2024-12-02 07:47:13,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:47:13,736 INFO L225 Difference]: With dead ends: 205 [2024-12-02 07:47:13,736 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 07:47:13,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 07:47:13,742 INFO L435 NwaCegarLoop]: 136 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, 136 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 07:47:13,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:47:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 07:47:13,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-02 07:47:13,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-02 07:47:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2024-12-02 07:47:13,782 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 36 [2024-12-02 07:47:13,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:47:13,783 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2024-12-02 07:47:13,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:47:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2024-12-02 07:47:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-02 07:47:13,785 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:47:13,785 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-12-02 07:47:13,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:47:13,786 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:47:13,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:47:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1298529859, now seen corresponding path program 1 times [2024-12-02 07:47:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:47:13,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728458443] [2024-12-02 07:47:13,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:47:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:48:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 07:48:12,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:48:12,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728458443] [2024-12-02 07:48:12,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728458443] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:12,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:12,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:48:12,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525638513] [2024-12-02 07:48:12,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:12,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:48:12,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:48:12,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:48:12,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:48:12,789 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 07:48:12,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:12,881 INFO L93 Difference]: Finished difference Result 148 states and 186 transitions. [2024-12-02 07:48:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:48:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2024-12-02 07:48:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:12,883 INFO L225 Difference]: With dead ends: 148 [2024-12-02 07:48:12,883 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 07:48:12,883 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 07:48:12,884 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 6 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:12,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 374 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:48:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 07:48:12,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-02 07:48:12,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 66 states have internal predecessors, (76), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-02 07:48:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2024-12-02 07:48:12,896 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 36 [2024-12-02 07:48:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:12,896 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2024-12-02 07:48:12,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 07:48:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2024-12-02 07:48:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 07:48:12,898 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:12,898 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-12-02 07:48:12,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:48:12,899 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:12,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:12,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1909598513, now seen corresponding path program 1 times [2024-12-02 07:48:12,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:48:12,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074571924] [2024-12-02 07:48:12,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:12,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:49:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:49:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 07:49:11,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:49:11,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074571924] [2024-12-02 07:49:11,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074571924] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:49:11,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:49:11,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 07:49:11,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803084976] [2024-12-02 07:49:11,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:49:11,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:49:11,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:49:11,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:49:11,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:49:11,579 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-12-02 07:49:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:49:11,907 INFO L93 Difference]: Finished difference Result 139 states and 170 transitions. [2024-12-02 07:49:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:49:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 64 [2024-12-02 07:49:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:49:11,909 INFO L225 Difference]: With dead ends: 139 [2024-12-02 07:49:11,909 INFO L226 Difference]: Without dead ends: 102 [2024-12-02 07:49:11,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:49:11,910 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 5 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:49:11,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 822 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:49:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-12-02 07:49:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-12-02 07:49:11,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 66 states have internal predecessors, (75), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-02 07:49:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2024-12-02 07:49:11,921 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 64 [2024-12-02 07:49:11,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:49:11,921 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2024-12-02 07:49:11,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-12-02 07:49:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2024-12-02 07:49:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 07:49:11,923 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:49:11,923 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-12-02 07:49:11,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:49:11,924 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:49:11,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:49:11,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1074535689, now seen corresponding path program 1 times [2024-12-02 07:49:11,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:49:11,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487625477] [2024-12-02 07:49:11,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:49:11,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:50:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:50:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-12-02 07:50:10,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:50:10,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487625477] [2024-12-02 07:50:10,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487625477] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:50:10,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:50:10,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:50:10,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548554526] [2024-12-02 07:50:10,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:50:10,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:50:10,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:50:10,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:50:10,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:50:10,695 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 07:50:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:50:10,799 INFO L93 Difference]: Finished difference Result 159 states and 199 transitions. [2024-12-02 07:50:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:50:10,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2024-12-02 07:50:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:50:10,801 INFO L225 Difference]: With dead ends: 159 [2024-12-02 07:50:10,802 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 07:50:10,802 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 07:50:10,803 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 4 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:50:10,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 365 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:50:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 07:50:10,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-02 07:50:10,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-02 07:50:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2024-12-02 07:50:10,813 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 65 [2024-12-02 07:50:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:50:10,814 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2024-12-02 07:50:10,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 07:50:10,814 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2024-12-02 07:50:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 07:50:10,816 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:50:10,817 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:50:10,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:50:10,817 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:50:10,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:50:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1205065792, now seen corresponding path program 1 times [2024-12-02 07:50:10,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:50:10,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605949760] [2024-12-02 07:50:10,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:50:10,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:51:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:51:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-12-02 07:51:10,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:51:10,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605949760] [2024-12-02 07:51:10,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605949760] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:51:10,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:51:10,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-12-02 07:51:10,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210637428] [2024-12-02 07:51:10,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:51:10,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 07:51:10,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:51:10,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 07:51:10,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-12-02 07:51:10,774 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-02 07:51:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:51:12,357 INFO L93 Difference]: Finished difference Result 138 states and 167 transitions. [2024-12-02 07:51:12,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 07:51:12,357 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) Word has length 99 [2024-12-02 07:51:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:51:12,359 INFO L225 Difference]: With dead ends: 138 [2024-12-02 07:51:12,359 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 07:51:12,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:51:12,361 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 19 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:51:12,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1177 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 07:51:12,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 07:51:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-02 07:51:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.123076923076923) internal successors, (73), 66 states have internal predecessors, (73), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-02 07:51:12,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2024-12-02 07:51:12,368 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 99 [2024-12-02 07:51:12,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:51:12,368 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2024-12-02 07:51:12,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 12 states have internal predecessors, (44), 6 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 9 states have call predecessors, (14), 6 states have call successors, (14) [2024-12-02 07:51:12,368 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2024-12-02 07:51:12,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-12-02 07:51:12,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:51:12,370 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:51:12,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:51:12,370 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:51:12,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:51:12,370 INFO L85 PathProgramCache]: Analyzing trace with hash -637333488, now seen corresponding path program 1 times [2024-12-02 07:51:12,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:51:12,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3528826] [2024-12-02 07:51:12,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:51:12,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:52:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:52:09,772 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-12-02 07:52:09,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:52:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3528826] [2024-12-02 07:52:09,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3528826] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:52:09,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769528026] [2024-12-02 07:52:09,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:52:09,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:52:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:52:09,775 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:52:09,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 07:53:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:53:06,811 INFO L256 TraceCheckSpWp]: Trace formula consists of 4045 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:53:06,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:53:07,412 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-12-02 07:53:07,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:53:07,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769528026] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:53:07,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:53:07,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2024-12-02 07:53:07,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762724623] [2024-12-02 07:53:07,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:53:07,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:53:07,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:53:07,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:53:07,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:53:07,414 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 07:53:07,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:53:07,644 INFO L93 Difference]: Finished difference Result 155 states and 189 transitions. [2024-12-02 07:53:07,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:53:07,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 117 [2024-12-02 07:53:07,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:53:07,646 INFO L225 Difference]: With dead ends: 155 [2024-12-02 07:53:07,646 INFO L226 Difference]: Without dead ends: 101 [2024-12-02 07:53:07,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:53:07,648 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 1 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:53:07,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 355 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:53:07,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-02 07:53:07,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-02 07:53:07,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 66 states have internal predecessors, (72), 26 states have call successors, (26), 9 states have call predecessors, (26), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-12-02 07:53:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2024-12-02 07:53:07,660 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 117 [2024-12-02 07:53:07,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:53:07,661 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2024-12-02 07:53:07,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-12-02 07:53:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2024-12-02 07:53:07,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 07:53:07,663 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:53:07,663 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:53:07,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 07:53:07,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 07:53:07,864 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:53:07,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:53:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash -850813917, now seen corresponding path program 1 times [2024-12-02 07:53:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:53:07,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130736382] [2024-12-02 07:53:07,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:53:07,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:54:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:54:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 15 proven. 11 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-12-02 07:54:36,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:54:36,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130736382] [2024-12-02 07:54:36,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130736382] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:54:36,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909746824] [2024-12-02 07:54:36,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:54:36,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:54:36,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:54:36,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:54:36,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 07:55:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:55:32,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 4073 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-12-02 07:55:32,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:55:32,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43 [2024-12-02 07:55:32,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 07:55:32,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2024-12-02 07:55:32,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-12-02 07:55:32,456 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-02 07:55:32,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-12-02 07:56:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 105 proven. 8 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 07:56:23,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:56:35,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909746824] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:56:35,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:56:35,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 36] total 60 [2024-12-02 07:56:35,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955464599] [2024-12-02 07:56:35,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:56:35,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 07:56:35,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:35,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 07:56:35,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=4671, Unknown=0, NotChecked=0, Total=4970 [2024-12-02 07:56:35,419 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 60 states, 53 states have (on average 2.188679245283019) internal successors, (116), 50 states have internal predecessors, (116), 18 states have call successors, (32), 5 states have call predecessors, (32), 15 states have return successors, (31), 18 states have call predecessors, (31), 16 states have call successors, (31) [2024-12-02 07:57:10,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:57:10,893 INFO L93 Difference]: Finished difference Result 198 states and 225 transitions. [2024-12-02 07:57:10,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-12-02 07:57:10,894 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 53 states have (on average 2.188679245283019) internal successors, (116), 50 states have internal predecessors, (116), 18 states have call successors, (32), 5 states have call predecessors, (32), 15 states have return successors, (31), 18 states have call predecessors, (31), 16 states have call successors, (31) Word has length 126 [2024-12-02 07:57:10,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:57:10,896 INFO L225 Difference]: With dead ends: 198 [2024-12-02 07:57:10,896 INFO L226 Difference]: Without dead ends: 196 [2024-12-02 07:57:10,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 102 SyntacticMatches, 11 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 61.9s TimeCoverageRelationStatistics Valid=576, Invalid=8544, Unknown=0, NotChecked=0, Total=9120 [2024-12-02 07:57:10,898 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 203 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 2191 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:57:10,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2636 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2191 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2024-12-02 07:57:10,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-12-02 07:57:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 178. [2024-12-02 07:57:10,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 118 states have (on average 1.1101694915254237) internal successors, (131), 121 states have internal predecessors, (131), 36 states have call successors, (36), 21 states have call predecessors, (36), 23 states have return successors, (36), 35 states have call predecessors, (36), 34 states have call successors, (36) [2024-12-02 07:57:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 203 transitions. [2024-12-02 07:57:10,935 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 203 transitions. Word has length 126 [2024-12-02 07:57:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:57:10,935 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 203 transitions. [2024-12-02 07:57:10,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 53 states have (on average 2.188679245283019) internal successors, (116), 50 states have internal predecessors, (116), 18 states have call successors, (32), 5 states have call predecessors, (32), 15 states have return successors, (31), 18 states have call predecessors, (31), 16 states have call successors, (31) [2024-12-02 07:57:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 203 transitions. [2024-12-02 07:57:10,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 07:57:10,936 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:57:10,937 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:57:10,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 07:57:11,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 07:57:11,137 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:57:11,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:11,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1660160543, now seen corresponding path program 1 times [2024-12-02 07:57:11,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:11,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75827627] [2024-12-02 07:57:11,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:11,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:58:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:58:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 07:58:11,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:58:11,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75827627] [2024-12-02 07:58:11,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75827627] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 07:58:11,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467971655] [2024-12-02 07:58:11,812 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:58:11,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:58:11,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:58:11,814 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:58:11,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:59:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:59:09,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 4068 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 07:59:09,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:59:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 07:59:12,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:59:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 07:59:18,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467971655] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:59:18,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 07:59:18,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 35 [2024-12-02 07:59:18,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348461304] [2024-12-02 07:59:18,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 07:59:18,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-02 07:59:18,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:59:18,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-02 07:59:18,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1109, Unknown=0, NotChecked=0, Total=1190 [2024-12-02 07:59:18,268 INFO L87 Difference]: Start difference. First operand 178 states and 203 transitions. Second operand has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 29 states have internal predecessors, (113), 8 states have call successors, (39), 2 states have call predecessors, (39), 9 states have return successors, (42), 14 states have call predecessors, (42), 7 states have call successors, (42) [2024-12-02 07:59:24,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:59:24,295 INFO L93 Difference]: Finished difference Result 264 states and 298 transitions. [2024-12-02 07:59:24,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 07:59:24,295 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 29 states have internal predecessors, (113), 8 states have call successors, (39), 2 states have call predecessors, (39), 9 states have return successors, (42), 14 states have call predecessors, (42), 7 states have call successors, (42) Word has length 126 [2024-12-02 07:59:24,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:59:24,297 INFO L225 Difference]: With dead ends: 264 [2024-12-02 07:59:24,297 INFO L226 Difference]: Without dead ends: 185 [2024-12-02 07:59:24,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=166, Invalid=2090, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 07:59:24,298 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 42 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:59:24,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3142 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-12-02 07:59:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-12-02 07:59:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 174. [2024-12-02 07:59:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 116 states have (on average 1.0775862068965518) internal successors, (125), 118 states have internal predecessors, (125), 35 states have call successors, (35), 21 states have call predecessors, (35), 22 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2024-12-02 07:59:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2024-12-02 07:59:24,334 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 126 [2024-12-02 07:59:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:59:24,335 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2024-12-02 07:59:24,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.2285714285714286) internal successors, (113), 29 states have internal predecessors, (113), 8 states have call successors, (39), 2 states have call predecessors, (39), 9 states have return successors, (42), 14 states have call predecessors, (42), 7 states have call successors, (42) [2024-12-02 07:59:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2024-12-02 07:59:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-12-02 07:59:24,336 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:59:24,336 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:59:24,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 07:59:24,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30dcd737-2f4a-4e4d-908c-09c2f95ba20b/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:59:24,536 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:59:24,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:59:24,537 INFO L85 PathProgramCache]: Analyzing trace with hash 770120567, now seen corresponding path program 1 times [2024-12-02 07:59:24,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:59:24,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286245229] [2024-12-02 07:59:24,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:59:24,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:00:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:00:22,656 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-12-02 08:00:22,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:00:22,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286245229] [2024-12-02 08:00:22,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286245229] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:00:22,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:00:22,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:00:22,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709710776] [2024-12-02 08:00:22,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:00:22,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:00:22,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:00:22,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:00:22,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:00:22,657 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 08:00:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:00:22,804 INFO L93 Difference]: Finished difference Result 214 states and 237 transitions. [2024-12-02 08:00:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:00:22,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 127 [2024-12-02 08:00:22,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:00:22,806 INFO L225 Difference]: With dead ends: 214 [2024-12-02 08:00:22,806 INFO L226 Difference]: Without dead ends: 174 [2024-12-02 08:00:22,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:00:22,806 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:00:22,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 611 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:00:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-12-02 08:00:22,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-12-02 08:00:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 116 states have (on average 1.0603448275862069) internal successors, (123), 118 states have internal predecessors, (123), 35 states have call successors, (35), 21 states have call predecessors, (35), 22 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2024-12-02 08:00:22,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 192 transitions. [2024-12-02 08:00:22,853 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 192 transitions. Word has length 127 [2024-12-02 08:00:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:00:22,853 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 192 transitions. [2024-12-02 08:00:22,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2024-12-02 08:00:22,853 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 192 transitions. [2024-12-02 08:00:22,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-12-02 08:00:22,854 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:00:22,854 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:00:22,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:00:22,855 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:00:22,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:00:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1277636955, now seen corresponding path program 1 times [2024-12-02 08:00:22,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:00:22,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145837835] [2024-12-02 08:00:22,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:00:22,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms