./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/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_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/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_e27b2265-24cb-42c6-9302-287f78b911f8/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 70fdf4888600bb48b8cb4af60c2a43959940f60808ef921b3b5f10a980e62d04 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:40:25,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:40:25,136 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 10:40:25,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:40:25,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:40:25,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:40:25,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:40:25,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:40:25,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:40:25,164 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:40:25,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:40:25,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:40:25,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:40:25,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:40:25,165 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:40:25,165 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:40:25,165 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:40:25,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:40:25,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:40:25,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:40:25,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:40:25,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:40:25,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:40:25,166 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:40:25,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:40:25,166 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:40:25,166 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:40:25,166 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:40:25,166 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:40:25,166 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:40:25,166 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:40:25,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:40:25,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:40:25,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:40:25,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:40:25,168 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_e27b2265-24cb-42c6-9302-287f78b911f8/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 -> 70fdf4888600bb48b8cb4af60c2a43959940f60808ef921b3b5f10a980e62d04 [2024-12-02 10:40:25,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:40:25,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:40:25,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:40:25,418 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:40:25,419 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:40:25,420 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i [2024-12-02 10:40:28,048 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/data/4eb4e8560/f631f4dfe14e480c94e3dd86ef7d65ac/FLAGbb232c4d7 [2024-12-02 10:40:28,422 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:40:28,423 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i [2024-12-02 10:40:28,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/data/4eb4e8560/f631f4dfe14e480c94e3dd86ef7d65ac/FLAGbb232c4d7 [2024-12-02 10:40:28,469 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/data/4eb4e8560/f631f4dfe14e480c94e3dd86ef7d65ac [2024-12-02 10:40:28,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:40:28,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:40:28,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:40:28,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:40:28,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:40:28,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:40:28" (1/1) ... [2024-12-02 10:40:28,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c25a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:28, skipping insertion in model container [2024-12-02 10:40:28,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:40:28" (1/1) ... [2024-12-02 10:40:28,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:40:28,777 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_e27b2265-24cb-42c6-9302-287f78b911f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i[4501,4514] [2024-12-02 10:40:28,783 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_e27b2265-24cb-42c6-9302-287f78b911f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i[4561,4574] [2024-12-02 10:40:29,539 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:29,540 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:29,540 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:29,541 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:29,542 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:29,555 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:29,556 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:29,558 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:29,559 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,133 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,133 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,215 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,215 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:40:30,321 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:40:30,334 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_e27b2265-24cb-42c6-9302-287f78b911f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i[4501,4514] [2024-12-02 10:40:30,334 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_e27b2265-24cb-42c6-9302-287f78b911f8/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_dynamic_harness_negated.i[4561,4574] [2024-12-02 10:40:30,374 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,374 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,374 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,375 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,375 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,381 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,382 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,383 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,383 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,451 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,451 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,492 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8265] [2024-12-02 10:40:30,494 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,494 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 10:40:30,508 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8751-8762] [2024-12-02 10:40:30,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:40:30,671 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:40:30,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30 WrapperNode [2024-12-02 10:40:30,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:40:30,673 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:40:30,673 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:40:30,673 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:40:30,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,789 INFO L138 Inliner]: procedures = 680, calls = 2637, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1079 [2024-12-02 10:40:30,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:40:30,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:40:30,790 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:40:30,790 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:40:30,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,862 INFO L175 MemorySlicer]: Split 595 memory accesses to 9 slices as follows [4, 2, 257, 238, 8, 25, 9, 5, 47]. 43 percent of accesses are in the largest equivalence class. The 26 initializations are split as follows [2, 2, 0, 6, 4, 2, 5, 1, 4]. The 497 writes are split as follows [0, 0, 257, 232, 0, 1, 1, 1, 5]. [2024-12-02 10:40:30,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,895 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,898 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,930 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:40:30,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:40:30,931 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:40:30,931 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:40:30,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (1/1) ... [2024-12-02 10:40:30,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:40:30,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:40:30,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:40:30,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:40:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-12-02 10:40:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-12-02 10:40:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-12-02 10:40:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-12-02 10:40:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 10:40:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 10:40:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 10:40:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-12-02 10:40:30,988 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-12-02 10:40:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 10:40:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 10:40:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 10:40:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 10:40:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-12-02 10:40:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-12-02 10:40:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:40:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 10:40:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-12-02 10:40:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-12-02 10:40:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-12-02 10:40:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:40:30,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-12-02 10:40:30,992 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-12-02 10:40:30,992 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-12-02 10:40:30,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 10:40:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 10:40:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-12-02 10:40:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2024-12-02 10:40:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 10:40:30,993 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:40:30,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 10:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 10:40:31,294 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:40:31,296 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:40:39,191 INFO L? ?]: Removed 141 outVars from TransFormulas that were not future-live. [2024-12-02 10:40:39,191 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:40:39,203 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:40:39,204 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 10:40:39,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:40:39 BoogieIcfgContainer [2024-12-02 10:40:39,204 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:40:39,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:40:39,207 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:40:39,210 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:40:39,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:40:28" (1/3) ... [2024-12-02 10:40:39,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cff2e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:40:39, skipping insertion in model container [2024-12-02 10:40:39,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:40:30" (2/3) ... [2024-12-02 10:40:39,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cff2e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:40:39, skipping insertion in model container [2024-12-02 10:40:39,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:40:39" (3/3) ... [2024-12-02 10:40:39,213 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness_negated.i [2024-12-02 10:40:39,224 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:40:39,225 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_append_dynamic_harness_negated.i that has 19 procedures, 248 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:40:39,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:40:39,280 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;@3424e344, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:40:39,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:40:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2024-12-02 10:40:39,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 10:40:39,292 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:40:39,292 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 10:40:39,293 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:40:39,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:39,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1548813975, now seen corresponding path program 1 times [2024-12-02 10:40:39,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:39,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526863852] [2024-12-02 10:40:39,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:39,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-12-02 10:42:15,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:15,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526863852] [2024-12-02 10:42:15,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526863852] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:42:15,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638050145] [2024-12-02 10:42:15,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:15,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:42:15,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:42:15,522 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:42:15,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:43:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:43:52,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 7655 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 10:43:52,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:43:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-12-02 10:43:52,193 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:43:52,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638050145] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:43:52,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:43:52,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 10:43:52,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080186084] [2024-12-02 10:43:52,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:43:52,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:43:52,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:43:52,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:43:52,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:43:52,220 INFO L87 Difference]: Start difference. First operand has 248 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 157 states have internal predecessors, (193), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:43:52,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:43:52,262 INFO L93 Difference]: Finished difference Result 488 states and 707 transitions. [2024-12-02 10:43:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:43:52,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2024-12-02 10:43:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:43:52,270 INFO L225 Difference]: With dead ends: 488 [2024-12-02 10:43:52,270 INFO L226 Difference]: Without dead ends: 243 [2024-12-02 10:43:52,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 84 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 10:43:52,277 INFO L435 NwaCegarLoop]: 333 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, 333 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 10:43:52,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:43:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-12-02 10:43:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-12-02 10:43:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2171052631578947) internal successors, (185), 153 states have internal predecessors, (185), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-12-02 10:43:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 328 transitions. [2024-12-02 10:43:52,332 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 328 transitions. Word has length 83 [2024-12-02 10:43:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:43:52,332 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 328 transitions. [2024-12-02 10:43:52,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:43:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 328 transitions. [2024-12-02 10:43:52,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-12-02 10:43:52,334 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:43:52,335 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 10:43:52,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:43:52,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:43:52,535 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:43:52,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:43:52,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1861904943, now seen corresponding path program 1 times [2024-12-02 10:43:52,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:43:52,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633388881] [2024-12-02 10:43:52,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:43:52,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:45:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:45:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 10:45:27,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:45:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633388881] [2024-12-02 10:45:27,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633388881] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:45:27,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695431693] [2024-12-02 10:45:27,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:45:27,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:45:27,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:45:27,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:45:27,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:47:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:47:01,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 7660 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:47:01,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:47:02,225 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 10:47:02,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:47:02,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695431693] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:47:02,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:47:02,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 10:47:02,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033323385] [2024-12-02 10:47:02,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:47:02,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:47:02,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:47:02,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:47:02,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:47:02,228 INFO L87 Difference]: Start difference. First operand 243 states and 328 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 10:47:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:47:04,273 INFO L93 Difference]: Finished difference Result 478 states and 649 transitions. [2024-12-02 10:47:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:47:04,273 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 85 [2024-12-02 10:47:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:47:04,277 INFO L225 Difference]: With dead ends: 478 [2024-12-02 10:47:04,277 INFO L226 Difference]: Without dead ends: 246 [2024-12-02 10:47:04,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:47:04,279 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 350 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:47:04,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 986 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 10:47:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-12-02 10:47:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-12-02 10:47:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2142857142857142) internal successors, (187), 156 states have internal predecessors, (187), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2024-12-02 10:47:04,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 335 transitions. [2024-12-02 10:47:04,304 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 335 transitions. Word has length 85 [2024-12-02 10:47:04,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:47:04,305 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 335 transitions. [2024-12-02 10:47:04,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-12-02 10:47:04,306 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 335 transitions. [2024-12-02 10:47:04,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-12-02 10:47:04,308 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:47:04,308 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 10:47:04,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 10:47:04,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:47:04,509 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:47:04,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:47:04,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1192287750, now seen corresponding path program 1 times [2024-12-02 10:47:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:47:04,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658381637] [2024-12-02 10:47:04,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:47:04,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 10:48:38,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:38,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658381637] [2024-12-02 10:48:38,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658381637] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:48:38,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490625289] [2024-12-02 10:48:38,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:38,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:48:38,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:48:38,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:48:38,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:50:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:14,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 7677 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:50:14,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:50:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-02 10:50:15,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:50:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 10:50:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490625289] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:50:16,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:50:16,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2024-12-02 10:50:16,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390192370] [2024-12-02 10:50:16,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:50:16,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 10:50:16,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:16,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 10:50:16,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:50:16,593 INFO L87 Difference]: Start difference. First operand 246 states and 335 transitions. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 7 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2024-12-02 10:50:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:18,897 INFO L93 Difference]: Finished difference Result 475 states and 649 transitions. [2024-12-02 10:50:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:50:18,898 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 7 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 91 [2024-12-02 10:50:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:18,900 INFO L225 Difference]: With dead ends: 475 [2024-12-02 10:50:18,900 INFO L226 Difference]: Without dead ends: 249 [2024-12-02 10:50:18,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:50:18,902 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 316 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:18,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1490 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-12-02 10:50:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-12-02 10:50:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-12-02 10:50:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 156 states have (on average 1.2115384615384615) internal successors, (189), 159 states have internal predecessors, (189), 72 states have call successors, (72), 18 states have call predecessors, (72), 20 states have return successors, (81), 71 states have call predecessors, (81), 71 states have call successors, (81) [2024-12-02 10:50:18,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 342 transitions. [2024-12-02 10:50:18,917 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 342 transitions. Word has length 91 [2024-12-02 10:50:18,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:18,917 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 342 transitions. [2024-12-02 10:50:18,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 7 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2024-12-02 10:50:18,917 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 342 transitions. [2024-12-02 10:50:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 10:50:18,918 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:18,919 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 10:50:18,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 10:50:19,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27b2265-24cb-42c6-9302-287f78b911f8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:19,119 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:19,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1771155115, now seen corresponding path program 1 times [2024-12-02 10:50:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:19,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762734418] [2024-12-02 10:50:19,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:19,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-12-02 10:51:55,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:55,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762734418] [2024-12-02 10:51:55,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762734418] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:55,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:55,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:51:55,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510119843] [2024-12-02 10:51:55,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:55,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:51:55,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:55,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:51:55,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:51:55,715 INFO L87 Difference]: Start difference. First operand 249 states and 342 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 10:51:56,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:56,205 INFO L93 Difference]: Finished difference Result 472 states and 642 transitions. [2024-12-02 10:51:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:51:56,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 93 [2024-12-02 10:51:56,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:56,208 INFO L225 Difference]: With dead ends: 472 [2024-12-02 10:51:56,208 INFO L226 Difference]: Without dead ends: 246 [2024-12-02 10:51:56,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:56,210 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 116 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:56,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1068 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:51:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-12-02 10:51:56,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-12-02 10:51:56,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 154 states have (on average 1.2077922077922079) internal successors, (186), 156 states have internal predecessors, (186), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2024-12-02 10:51:56,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 334 transitions. [2024-12-02 10:51:56,230 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 334 transitions. Word has length 93 [2024-12-02 10:51:56,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:56,230 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 334 transitions. [2024-12-02 10:51:56,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 10:51:56,230 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 334 transitions. [2024-12-02 10:51:56,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-12-02 10:51:56,232 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:56,232 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-12-02 10:51:56,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:51:56,232 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:56,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1559133104, now seen corresponding path program 1 times [2024-12-02 10:51:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:56,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69890482] [2024-12-02 10:51:56,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:56,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:53:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:53:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 10:53:32,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:53:32,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69890482] [2024-12-02 10:53:32,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69890482] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:53:32,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:53:32,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:53:32,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492972861] [2024-12-02 10:53:32,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:53:32,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:53:32,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:53:32,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:53:32,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:53:32,633 INFO L87 Difference]: Start difference. First operand 246 states and 334 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 10:53:33,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:53:33,402 INFO L93 Difference]: Finished difference Result 469 states and 632 transitions. [2024-12-02 10:53:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:53:33,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 95 [2024-12-02 10:53:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:53:33,405 INFO L225 Difference]: With dead ends: 469 [2024-12-02 10:53:33,406 INFO L226 Difference]: Without dead ends: 243 [2024-12-02 10:53:33,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:53:33,407 INFO L435 NwaCegarLoop]: 305 mSDtfsCounter, 119 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:53:33,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1332 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 10:53:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-12-02 10:53:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2024-12-02 10:53:33,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 153 states have internal predecessors, (183), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2024-12-02 10:53:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 326 transitions. [2024-12-02 10:53:33,425 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 326 transitions. Word has length 95 [2024-12-02 10:53:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:53:33,425 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 326 transitions. [2024-12-02 10:53:33,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 10:53:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 326 transitions. [2024-12-02 10:53:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-12-02 10:53:33,427 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:53:33,427 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:53:33,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:53:33,427 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:53:33,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:53:33,427 INFO L85 PathProgramCache]: Analyzing trace with hash 352895227, now seen corresponding path program 1 times [2024-12-02 10:53:33,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:53:33,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747637777] [2024-12-02 10:53:33,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:53:33,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:55:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:55:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 10:55:15,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:55:15,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747637777] [2024-12-02 10:55:15,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747637777] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:55:15,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:55:15,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 10:55:15,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781695716] [2024-12-02 10:55:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:55:15,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:55:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:55:15,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:55:15,302 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:55:15,302 INFO L87 Difference]: Start difference. First operand 243 states and 326 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:55:17,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:55:17,015 INFO L93 Difference]: Finished difference Result 499 states and 674 transitions. [2024-12-02 10:55:17,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:55:17,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2024-12-02 10:55:17,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:55:17,019 INFO L225 Difference]: With dead ends: 499 [2024-12-02 10:55:17,019 INFO L226 Difference]: Without dead ends: 292 [2024-12-02 10:55:17,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:55:17,021 INFO L435 NwaCegarLoop]: 316 mSDtfsCounter, 54 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:55:17,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1510 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 10:55:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-12-02 10:55:17,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 275. [2024-12-02 10:55:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 178 states have (on average 1.202247191011236) internal successors, (214), 180 states have internal predecessors, (214), 76 states have call successors, (76), 19 states have call predecessors, (76), 20 states have return successors, (83), 75 states have call predecessors, (83), 75 states have call successors, (83) [2024-12-02 10:55:17,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 373 transitions. [2024-12-02 10:55:17,047 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 373 transitions. Word has length 101 [2024-12-02 10:55:17,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:55:17,047 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 373 transitions. [2024-12-02 10:55:17,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-12-02 10:55:17,047 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 373 transitions. [2024-12-02 10:55:17,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 10:55:17,048 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:55:17,048 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:55:17,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:55:17,049 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:55:17,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:55:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2010689015, now seen corresponding path program 1 times [2024-12-02 10:55:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:55:17,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291019751] [2024-12-02 10:55:17,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:55:17,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms