./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash da48e5de3ccd5190fb3d3934a3d9d423de1f83d4587f9dc2fa1f3f18a9362190 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 06:00:28,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:00:28,931 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 06:00:28,941 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:00:28,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:00:28,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:00:28,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:00:28,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:00:28,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:00:28,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:00:28,993 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 06:00:28,994 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 06:00:28,994 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 06:00:28,997 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 06:00:28,998 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 06:00:28,998 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 06:00:28,999 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 06:00:28,999 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 06:00:28,999 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 06:00:29,000 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 06:00:29,001 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 06:00:29,005 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 06:00:29,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:00:29,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:00:29,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:00:29,007 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:00:29,010 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:00:29,010 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:00:29,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:00:29,011 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:00:29,012 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:00:29,013 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:00:29,014 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:00:29,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:00:29,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:00:29,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:00:29,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:00:29,016 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:00:29,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:00:29,016 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 06:00:29,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:00:29,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:00:29,017 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 06:00:29,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:00:29,018 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da48e5de3ccd5190fb3d3934a3d9d423de1f83d4587f9dc2fa1f3f18a9362190 [2024-11-09 06:00:29,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:00:29,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:00:29,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:00:29,439 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:00:29,440 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:00:29,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i Unable to find full path for "g++" [2024-11-09 06:00:31,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:00:32,623 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:00:32,624 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2024-11-09 06:00:32,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/data/4117cc36a/6645711dabff4504b199b9c94ffceaef/FLAG5d7062111 [2024-11-09 06:00:32,716 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/data/4117cc36a/6645711dabff4504b199b9c94ffceaef [2024-11-09 06:00:32,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:00:32,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:00:32,729 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:00:32,730 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:00:32,739 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:00:32,740 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:32" (1/1) ... [2024-11-09 06:00:32,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58910573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:32, skipping insertion in model container [2024-11-09 06:00:32,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:00:32" (1/1) ... [2024-11-09 06:00:32,939 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:00:33,371 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_fab097f3-476b-40d1-8bba-01c81cc46f13/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2024-11-09 06:00:33,381 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_fab097f3-476b-40d1-8bba-01c81cc46f13/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2024-11-09 06:00:34,562 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:34,563 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:34,564 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:34,566 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:34,568 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:34,590 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:34,591 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:34,594 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:34,595 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:35,635 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:35,640 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:35,799 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:35,800 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:35,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:00:35,989 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:00:36,015 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_fab097f3-476b-40d1-8bba-01c81cc46f13/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4503,4516] [2024-11-09 06:00:36,016 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_fab097f3-476b-40d1-8bba-01c81cc46f13/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i[4563,4576] [2024-11-09 06:00:36,106 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,111 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,112 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,112 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,117 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,135 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,135 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,141 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,142 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,381 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,382 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,492 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8097] [2024-11-09 06:00:36,494 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,495 WARN L1698 CHandler]: Possible shadowing of function index [2024-11-09 06:00:36,514 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8583-8594] [2024-11-09 06:00:36,530 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:00:36,882 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:00:36,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36 WrapperNode [2024-11-09 06:00:36,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:00:36,884 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:00:36,884 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:00:36,884 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:00:36,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,142 INFO L138 Inliner]: procedures = 681, calls = 2499, calls flagged for inlining = 58, calls inlined = 13, statements flattened = 1020 [2024-11-09 06:00:37,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:00:37,144 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:00:37,144 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:00:37,145 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:00:37,158 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,235 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,249 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:00:37,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:00:37,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:00:37,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:00:37,262 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (1/1) ... [2024-11-09 06:00:37,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 06:00:37,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:37,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 06:00:37,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 06:00:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-09 06:00:37,389 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-09 06:00:37,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:00:37,390 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-09 06:00:37,391 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-09 06:00:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 06:00:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 06:00:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-09 06:00:37,391 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-09 06:00:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:00:37,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:00:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:00:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:00:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 06:00:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:00:37,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:00:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-09 06:00:37,392 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-09 06:00:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2024-11-09 06:00:37,392 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2024-11-09 06:00:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 06:00:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-09 06:00:37,393 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-09 06:00:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 06:00:37,393 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 06:00:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:00:37,393 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-09 06:00:37,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-09 06:00:37,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 06:00:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 06:00:37,395 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-09 06:00:37,396 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-09 06:00:37,396 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-09 06:00:37,397 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-09 06:00:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 06:00:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 06:00:37,846 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:00:37,849 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:00:46,093 INFO L? ?]: Removed 127 outVars from TransFormulas that were not future-live. [2024-11-09 06:00:46,093 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:00:47,150 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:00:47,151 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-09 06:00:47,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:00:47 BoogieIcfgContainer [2024-11-09 06:00:47,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:00:47,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:00:47,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:00:47,160 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:00:47,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:00:32" (1/3) ... [2024-11-09 06:00:47,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f234d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:47, skipping insertion in model container [2024-11-09 06:00:47,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:00:36" (2/3) ... [2024-11-09 06:00:47,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f234d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:00:47, skipping insertion in model container [2024-11-09 06:00:47,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:00:47" (3/3) ... [2024-11-09 06:00:47,163 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2024-11-09 06:00:47,189 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:00:47,189 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 06:00:47,302 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:00:47,315 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=FINITE_AUTOMATA, 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;@3af2f8d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:00:47,315 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 06:00:47,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 72 states have internal predecessors, (95), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-09 06:00:47,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-09 06:00:47,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:47,337 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 06:00:47,339 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:00:47,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:47,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1478793110, now seen corresponding path program 1 times [2024-11-09 06:00:47,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:47,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033418783] [2024-11-09 06:00:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:47,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:02:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:02:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:02:57,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:02:57,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033418783] [2024-11-09 06:02:57,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033418783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:02:57,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:02:57,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:02:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559069456] [2024-11-09 06:02:57,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:02:57,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:02:57,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:02:57,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:02:57,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:02:57,599 INFO L87 Difference]: Start difference. First operand has 122 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 72 states have internal predecessors, (95), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 06:02:59,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:02,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:04,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:06,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:09,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:03:10,424 INFO L93 Difference]: Finished difference Result 231 states and 331 transitions. [2024-11-09 06:03:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:03:10,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2024-11-09 06:03:10,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:03:10,441 INFO L225 Difference]: With dead ends: 231 [2024-11-09 06:03:10,442 INFO L226 Difference]: Without dead ends: 122 [2024-11-09 06:03:10,446 INFO L431 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 [2024-11-09 06:03:10,450 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 0 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:03:10,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 705 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 5 Unknown, 0 Unchecked, 12.7s Time] [2024-11-09 06:03:10,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-09 06:03:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-09 06:03:10,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 73 states have internal predecessors, (87), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-09 06:03:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 162 transitions. [2024-11-09 06:03:10,543 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 162 transitions. Word has length 33 [2024-11-09 06:03:10,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:03:10,547 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 162 transitions. [2024-11-09 06:03:10,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-09 06:03:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 162 transitions. [2024-11-09 06:03:10,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 06:03:10,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:03:10,554 INFO L215 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] [2024-11-09 06:03:10,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:03:10,555 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:03:10,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:03:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -2007730191, now seen corresponding path program 1 times [2024-11-09 06:03:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:03:10,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004597539] [2024-11-09 06:03:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:05:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:06:30,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:06:30,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:06:30,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004597539] [2024-11-09 06:06:30,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004597539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:06:30,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823395485] [2024-11-09 06:06:30,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:06:30,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:06:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:06:30,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:06:30,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:08:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:08:24,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 7501 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 06:08:24,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:08:25,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 [2024-11-09 06:08:25,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 [2024-11-09 06:08:50,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:08:50,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 317 treesize of output 309 [2024-11-09 06:08:50,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:08:50,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 285 treesize of output 277 [2024-11-09 06:08:51,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:08:51,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 253 treesize of output 249 [2024-11-09 06:09:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:09:00,389 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:09:00,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823395485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:09:00,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:09:00,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 27 [2024-11-09 06:09:00,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464942326] [2024-11-09 06:09:00,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:09:00,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 06:09:00,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:09:00,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 06:09:00,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=633, Unknown=1, NotChecked=0, Total=702 [2024-11-09 06:09:00,395 INFO L87 Difference]: Start difference. First operand 122 states and 162 transitions. Second operand has 13 states, 7 states have (on average 2.857142857142857) internal successors, (20), 10 states have internal predecessors, (20), 6 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 06:09:02,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:05,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:07,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:09,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:12,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:14,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:16,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:18,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:20,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:23,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:09:26,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:29,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:31,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:35,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:45,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:47,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:50,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:52,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:54,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:57,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:09:59,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:02,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:05,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:07,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:10:07,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:10:07,216 INFO L93 Difference]: Finished difference Result 225 states and 295 transitions. [2024-11-09 06:10:07,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 06:10:07,217 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 7 states have (on average 2.857142857142857) internal successors, (20), 10 states have internal predecessors, (20), 6 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 36 [2024-11-09 06:10:07,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:10:07,222 INFO L225 Difference]: With dead ends: 225 [2024-11-09 06:10:07,222 INFO L226 Difference]: Without dead ends: 212 [2024-11-09 06:10:07,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=110, Invalid=1011, Unknown=1, NotChecked=0, Total=1122 [2024-11-09 06:10:07,225 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 165 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 48 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:10:07,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 1365 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1008 Invalid, 23 Unknown, 0 Unchecked, 63.2s Time] [2024-11-09 06:10:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-09 06:10:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2024-11-09 06:10:07,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 123 states have (on average 1.2032520325203253) internal successors, (148), 128 states have internal predecessors, (148), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (63), 60 states have call predecessors, (63), 61 states have call successors, (63) [2024-11-09 06:10:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 275 transitions. [2024-11-09 06:10:07,285 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 275 transitions. Word has length 36 [2024-11-09 06:10:07,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:10:07,285 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 275 transitions. [2024-11-09 06:10:07,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 7 states have (on average 2.857142857142857) internal successors, (20), 10 states have internal predecessors, (20), 6 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-09 06:10:07,286 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 275 transitions. [2024-11-09 06:10:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-09 06:10:07,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:10:07,288 INFO L215 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, 1, 1] [2024-11-09 06:10:07,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:10:07,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fab097f3-476b-40d1-8bba-01c81cc46f13/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:10:07,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:10:07,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:10:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1711847404, now seen corresponding path program 1 times [2024-11-09 06:10:07,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:10:07,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570634522] [2024-11-09 06:10:07,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:10:07,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:12:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:12:13,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:12:13,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:12:13,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570634522] [2024-11-09 06:12:13,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570634522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:12:13,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:12:13,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 06:12:13,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174979621] [2024-11-09 06:12:13,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:12:13,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 06:12:13,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:12:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 06:12:14,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:12:14,000 INFO L87 Difference]: Start difference. First operand 208 states and 275 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-09 06:12:16,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:12:18,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:12:20,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:12:23,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:12:25,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:12:26,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:12:26,896 INFO L93 Difference]: Finished difference Result 216 states and 281 transitions. [2024-11-09 06:12:26,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 06:12:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 38 [2024-11-09 06:12:26,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:12:26,901 INFO L225 Difference]: With dead ends: 216 [2024-11-09 06:12:26,901 INFO L226 Difference]: Without dead ends: 199 [2024-11-09 06:12:26,902 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:12:26,903 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:12:26,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 685 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 5 Unknown, 0 Unchecked, 12.8s Time] [2024-11-09 06:12:26,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-09 06:12:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-11-09 06:12:26,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 122 states have internal predecessors, (142), 60 states have call successors, (60), 19 states have call predecessors, (60), 20 states have return successors, (60), 57 states have call predecessors, (60), 58 states have call successors, (60) [2024-11-09 06:12:26,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 262 transitions. [2024-11-09 06:12:26,972 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 262 transitions. Word has length 38 [2024-11-09 06:12:26,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:12:26,976 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 262 transitions. [2024-11-09 06:12:26,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-09 06:12:26,977 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 262 transitions. [2024-11-09 06:12:26,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 06:12:26,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:12:26,982 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:12:26,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:12:26,982 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:12:26,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:12:26,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1915996435, now seen corresponding path program 1 times [2024-11-09 06:12:26,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:12:26,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422517977] [2024-11-09 06:12:26,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:12:26,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:14:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:14:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 06:14:50,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:14:50,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422517977] [2024-11-09 06:14:50,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422517977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:14:50,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:14:50,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:14:50,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231891178] [2024-11-09 06:14:50,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:14:50,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:14:50,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:14:50,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:14:50,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:14:50,415 INFO L87 Difference]: Start difference. First operand 199 states and 262 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 06:14:52,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers []