./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/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_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/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 32bit --witnessprinter.graph.data.programhash e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:09:41,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:09:42,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:09:42,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:09:42,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:09:42,088 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:09:42,089 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:09:42,090 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:09:42,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:09:42,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:09:42,092 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:09:42,093 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:09:42,093 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:09:42,097 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:09:42,097 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:09:42,098 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:09:42,098 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:09:42,099 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:09:42,099 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:09:42,100 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:09:42,100 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:09:42,105 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:09:42,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:09:42,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:09:42,106 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:09:42,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:09:42,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:09:42,108 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:09:42,108 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:09:42,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:09:42,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:09:42,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:09:42,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:09:42,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:09:42,114 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:09:42,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:09:42,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:09:42,115 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:09:42,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:09:42,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:09:42,118 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:09:42,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:09:42,119 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:09:42,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:09:42,121 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:09:42,121 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:09:42,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:09:42,122 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_a2e9c783-e114-4193-9154-cc5dfd463022/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 [2024-11-09 05:09:42,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:09:42,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:09:42,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:09:42,510 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:09:42,511 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:09:42,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c Unable to find full path for "g++" [2024-11-09 05:09:45,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:09:45,527 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:09:45,528 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2024-11-09 05:09:45,539 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/data/23ac5a886/020dfc4eb92d4f3c8d8f8a2a41ab0419/FLAG19e07aa6c [2024-11-09 05:09:45,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/data/23ac5a886/020dfc4eb92d4f3c8d8f8a2a41ab0419 [2024-11-09 05:09:45,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:09:45,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:09:45,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:09:45,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:09:45,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:09:45,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:09:45" (1/1) ... [2024-11-09 05:09:45,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@313eb9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:45, skipping insertion in model container [2024-11-09 05:09:45,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:09:45" (1/1) ... [2024-11-09 05:09:45,615 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:09:45,896 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_a2e9c783-e114-4193-9154-cc5dfd463022/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c[489,502] [2024-11-09 05:09:45,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:09:45,961 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:09:45,981 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_a2e9c783-e114-4193-9154-cc5dfd463022/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c[489,502] [2024-11-09 05:09:45,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:09:46,012 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:09:46,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46 WrapperNode [2024-11-09 05:09:46,013 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:09:46,014 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:09:46,014 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:09:46,014 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:09:46,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,055 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-11-09 05:09:46,055 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:09:46,056 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:09:46,057 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:09:46,057 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:09:46,068 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,069 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:09:46,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:09:46,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:09:46,086 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:09:46,087 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (1/1) ... [2024-11-09 05:09:46,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:09:46,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:46,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:09:46,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:09:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:09:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:09:46,162 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:09:46,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:09:46,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:09:46,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:09:46,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 05:09:46,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 05:09:46,239 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:09:46,241 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:09:46,460 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-09 05:09:46,461 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:09:46,528 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:09:46,529 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:09:46,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:46 BoogieIcfgContainer [2024-11-09 05:09:46,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:09:46,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:09:46,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:09:46,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:09:46,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:09:45" (1/3) ... [2024-11-09 05:09:46,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa326a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:09:46, skipping insertion in model container [2024-11-09 05:09:46,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:09:46" (2/3) ... [2024-11-09 05:09:46,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa326a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:09:46, skipping insertion in model container [2024-11-09 05:09:46,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:46" (3/3) ... [2024-11-09 05:09:46,544 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2024-11-09 05:09:46,569 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:09:46,570 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:09:46,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:09:46,701 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;@132d64f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:09:46,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:09:46,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-09 05:09:46,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 05:09:46,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:46,719 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:46,720 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:46,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash -811347826, now seen corresponding path program 1 times [2024-11-09 05:09:46,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:46,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697804181] [2024-11-09 05:09:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:09:46,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902153114] [2024-11-09 05:09:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:46,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:46,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:46,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:46,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:09:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:47,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:09:47,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:09:47,224 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:09:47,224 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:47,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697804181] [2024-11-09 05:09:47,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:09:47,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902153114] [2024-11-09 05:09:47,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902153114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:47,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:47,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:09:47,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486934714] [2024-11-09 05:09:47,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:47,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:09:47,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:47,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:09:47,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:47,279 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 05:09:47,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:47,425 INFO L93 Difference]: Finished difference Result 57 states and 99 transitions. [2024-11-09 05:09:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:09:47,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2024-11-09 05:09:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:47,439 INFO L225 Difference]: With dead ends: 57 [2024-11-09 05:09:47,439 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 05:09:47,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:09:47,448 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:47,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 102 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:09:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 05:09:47,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-09 05:09:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 05:09:47,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2024-11-09 05:09:47,526 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 20 [2024-11-09 05:09:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:47,527 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2024-11-09 05:09:47,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-09 05:09:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2024-11-09 05:09:47,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:09:47,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:47,530 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:47,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:09:47,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-09 05:09:47,735 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:47,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:47,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1972449669, now seen corresponding path program 1 times [2024-11-09 05:09:47,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044188029] [2024-11-09 05:09:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:47,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:09:47,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837827276] [2024-11-09 05:09:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:47,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:47,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:47,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:47,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:09:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:47,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:09:47,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 05:09:48,050 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:09:48,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:48,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044188029] [2024-11-09 05:09:48,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:09:48,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837827276] [2024-11-09 05:09:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837827276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:48,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:48,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:09:48,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389006705] [2024-11-09 05:09:48,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:48,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:09:48,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:09:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:48,061 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:09:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:48,187 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-11-09 05:09:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:09:48,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 25 [2024-11-09 05:09:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:48,190 INFO L225 Difference]: With dead ends: 43 [2024-11-09 05:09:48,190 INFO L226 Difference]: Without dead ends: 41 [2024-11-09 05:09:48,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:09:48,192 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:48,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 104 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:09:48,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-09 05:09:48,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-09 05:09:48,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-09 05:09:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2024-11-09 05:09:48,209 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 25 [2024-11-09 05:09:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:48,210 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2024-11-09 05:09:48,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 05:09:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2024-11-09 05:09:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 05:09:48,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:48,212 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:48,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:09:48,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:48,416 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:48,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash -224793938, now seen corresponding path program 1 times [2024-11-09 05:09:48,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:48,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890274113] [2024-11-09 05:09:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:48,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:09:48,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946426725] [2024-11-09 05:09:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:48,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:48,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:48,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:48,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 05:09:48,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:48,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:09:48,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 05:09:48,709 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:09:48,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:48,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890274113] [2024-11-09 05:09:48,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:09:48,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946426725] [2024-11-09 05:09:48,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946426725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:48,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:48,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:09:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168528613] [2024-11-09 05:09:48,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:48,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:09:48,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:48,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:09:48,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:48,715 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 05:09:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:48,829 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2024-11-09 05:09:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:09:48,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2024-11-09 05:09:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:48,831 INFO L225 Difference]: With dead ends: 47 [2024-11-09 05:09:48,831 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 05:09:48,831 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:09:48,835 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:48,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 103 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:09:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 05:09:48,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-09 05:09:48,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 05:09:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-09 05:09:48,863 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 30 [2024-11-09 05:09:48,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:48,867 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-09 05:09:48,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-09 05:09:48,867 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-09 05:09:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 05:09:48,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:48,869 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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 05:09:48,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:09:49,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:49,077 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:49,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash -771541501, now seen corresponding path program 1 times [2024-11-09 05:09:49,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:49,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876727439] [2024-11-09 05:09:49,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:49,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:09:49,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:49,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876727439] [2024-11-09 05:09:49,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876727439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:49,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:09:49,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:09:49,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987076741] [2024-11-09 05:09:49,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:49,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:09:49,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:49,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:09:49,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:09:49,412 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-09 05:09:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:49,502 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2024-11-09 05:09:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:09:49,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 36 [2024-11-09 05:09:49,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:49,504 INFO L225 Difference]: With dead ends: 49 [2024-11-09 05:09:49,505 INFO L226 Difference]: Without dead ends: 47 [2024-11-09 05:09:49,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 05:09:49,506 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 3 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:49,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:09:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-09 05:09:49,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-09 05:09:49,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 05:09:49,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2024-11-09 05:09:49,520 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 36 [2024-11-09 05:09:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:49,521 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2024-11-09 05:09:49,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-09 05:09:49,522 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2024-11-09 05:09:49,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 05:09:49,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:49,523 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:49,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:09:49,524 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:49,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:49,525 INFO L85 PathProgramCache]: Analyzing trace with hash -550092383, now seen corresponding path program 1 times [2024-11-09 05:09:49,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:49,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191672579] [2024-11-09 05:09:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:49,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:09:49,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526831416] [2024-11-09 05:09:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:49,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:49,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:49,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:49,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:09:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:49,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 05:09:49,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:50,024 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 05:09:50,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:09:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-09 05:09:50,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:50,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191672579] [2024-11-09 05:09:50,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:09:50,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526831416] [2024-11-09 05:09:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526831416] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:50,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:09:50,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-09 05:09:50,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680136644] [2024-11-09 05:09:50,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:50,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:09:50,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:50,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:09:50,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:09:50,344 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:09:50,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:50,543 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2024-11-09 05:09:50,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:09:50,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37 [2024-11-09 05:09:50,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:50,546 INFO L225 Difference]: With dead ends: 53 [2024-11-09 05:09:50,546 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 05:09:50,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:09:50,547 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:50,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 90 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 05:09:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 05:09:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-09 05:09:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 05:09:50,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2024-11-09 05:09:50,576 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 37 [2024-11-09 05:09:50,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:50,576 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2024-11-09 05:09:50,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 05:09:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2024-11-09 05:09:50,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 05:09:50,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:50,578 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:50,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 05:09:50,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:50,786 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:50,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:50,788 INFO L85 PathProgramCache]: Analyzing trace with hash 939996272, now seen corresponding path program 1 times [2024-11-09 05:09:50,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:50,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500079765] [2024-11-09 05:09:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:50,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-09 05:09:51,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500079765] [2024-11-09 05:09:51,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500079765] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:09:51,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390912746] [2024-11-09 05:09:51,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:51,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:51,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:51,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 05:09:51,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:09:51,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 05:09:51,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:09:51,565 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:09:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390912746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:09:51,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:09:51,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-09 05:09:51,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192559356] [2024-11-09 05:09:51,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:09:51,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:09:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:09:51,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:09:51,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:09:51,570 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 05:09:51,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:09:51,711 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2024-11-09 05:09:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:09:51,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 41 [2024-11-09 05:09:51,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:09:51,713 INFO L225 Difference]: With dead ends: 61 [2024-11-09 05:09:51,713 INFO L226 Difference]: Without dead ends: 49 [2024-11-09 05:09:51,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:09:51,717 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:09:51,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 127 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:09:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-09 05:09:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-09 05:09:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-09 05:09:51,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-09 05:09:51,733 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 41 [2024-11-09 05:09:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:09:51,736 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-09 05:09:51,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-09 05:09:51,737 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-09 05:09:51,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 05:09:51,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:09:51,739 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:09:51,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 05:09:51,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:51,940 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:09:51,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:09:51,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1162441810, now seen corresponding path program 2 times [2024-11-09 05:09:51,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:09:51,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856050842] [2024-11-09 05:09:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:09:51,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:09:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:09:52,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921535261] [2024-11-09 05:09:52,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:09:52,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:09:52,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:09:52,009 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:09:52,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 05:09:52,097 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 05:09:52,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:09:52,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 05:09:52,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:09:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-09 05:09:52,645 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:09:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-09 05:09:53,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:09:53,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856050842] [2024-11-09 05:09:53,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:09:53,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921535261] [2024-11-09 05:09:53,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921535261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:09:53,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2030416633] [2024-11-09 05:09:53,226 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 05:09:53,226 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:09:53,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:09:53,238 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:09:53,239 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:09:56,810 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:09:56,817 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-09 05:09:56,819 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:10:14,014 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1833#(= |__VERIFIER_assert_#in~cond| 0)' at error location [2024-11-09 05:10:14,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:10:14,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:10:14,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2024-11-09 05:10:14,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796605961] [2024-11-09 05:10:14,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:10:14,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:10:14,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:10:14,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:10:14,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=514, Unknown=4, NotChecked=0, Total=600 [2024-11-09 05:10:14,018 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 05:10:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:10:24,841 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-11-09 05:10:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:10:24,843 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 42 [2024-11-09 05:10:24,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:10:24,844 INFO L225 Difference]: With dead ends: 73 [2024-11-09 05:10:24,845 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 05:10:24,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=110, Invalid=695, Unknown=7, NotChecked=0, Total=812 [2024-11-09 05:10:24,847 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:10:24,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 181 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 05:10:24,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 05:10:24,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2024-11-09 05:10:24,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 35 states have internal predecessors, (36), 19 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-09 05:10:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-11-09 05:10:24,870 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 42 [2024-11-09 05:10:24,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:10:24,871 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-11-09 05:10:24,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-09 05:10:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-11-09 05:10:24,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 05:10:24,873 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:10:24,874 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:10:24,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 05:10:25,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:25,075 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:10:25,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:10:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash 864837633, now seen corresponding path program 3 times [2024-11-09 05:10:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:10:25,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142630052] [2024-11-09 05:10:25,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:10:25,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:10:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:10:25,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172322278] [2024-11-09 05:10:25,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 05:10:25,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:10:25,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:10:25,125 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:10:25,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:10:25,206 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 05:10:25,206 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:10:25,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 05:10:25,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:10:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-09 05:10:28,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:10:30,942 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-09 05:10:30,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:10:30,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142630052] [2024-11-09 05:10:30,942 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:10:30,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172322278] [2024-11-09 05:10:30,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172322278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:10:30,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1363869836] [2024-11-09 05:10:30,946 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2024-11-09 05:10:30,946 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:10:30,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:10:30,947 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:10:30,947 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:10:33,812 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:10:33,856 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-09 05:10:33,867 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:04,228 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2361#(= |__VERIFIER_assert_#in~cond| 0)' at error location [2024-11-09 05:11:04,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:04,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:11:04,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 10 [2024-11-09 05:11:04,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827239807] [2024-11-09 05:11:04,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:04,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 05:11:04,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:04,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 05:11:04,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=468, Unknown=5, NotChecked=0, Total=552 [2024-11-09 05:11:04,230 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-09 05:11:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:16,775 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2024-11-09 05:11:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 05:11:16,776 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 47 [2024-11-09 05:11:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:16,777 INFO L225 Difference]: With dead ends: 77 [2024-11-09 05:11:16,777 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 05:11:16,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=112, Invalid=691, Unknown=9, NotChecked=0, Total=812 [2024-11-09 05:11:16,779 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:16,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 158 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 05:11:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 05:11:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2024-11-09 05:11:16,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 39 states have internal predecessors, (41), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 05:11:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2024-11-09 05:11:16,810 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 47 [2024-11-09 05:11:16,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:16,811 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2024-11-09 05:11:16,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 6 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-09 05:11:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2024-11-09 05:11:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 05:11:16,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:16,821 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 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] [2024-11-09 05:11:16,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:17,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-09 05:11:17,025 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:11:17,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash -83739331, now seen corresponding path program 1 times [2024-11-09 05:11:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:17,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892429653] [2024-11-09 05:11:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:17,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 05:11:18,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892429653] [2024-11-09 05:11:18,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892429653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:18,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593352298] [2024-11-09 05:11:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:18,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:18,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:18,108 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:18,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 05:11:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:18,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 05:11:18,174 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 05:11:18,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:11:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-09 05:11:19,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593352298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:11:19,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [205097655] [2024-11-09 05:11:19,919 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2024-11-09 05:11:19,919 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:11:19,919 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:11:19,920 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:11:19,920 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:11:22,226 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 1 for LOIs [2024-11-09 05:11:22,279 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 3 for LOIs [2024-11-09 05:11:22,290 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:11:47,345 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2978#(= |__VERIFIER_assert_#in~cond| 0)' at error location [2024-11-09 05:11:47,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:11:47,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:11:47,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-11-09 05:11:47,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190048016] [2024-11-09 05:11:47,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:11:47,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:11:47,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:47,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:11:47,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=470, Unknown=4, NotChecked=0, Total=552 [2024-11-09 05:11:47,349 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-09 05:11:49,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:49,164 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2024-11-09 05:11:49,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 05:11:49,165 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 58 [2024-11-09 05:11:49,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:49,166 INFO L225 Difference]: With dead ends: 75 [2024-11-09 05:11:49,166 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 05:11:49,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=86, Invalid=510, Unknown=4, NotChecked=0, Total=600 [2024-11-09 05:11:49,168 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:49,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 130 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 05:11:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 05:11:49,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-09 05:11:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 20 states have call successors, (20), 10 states have call predecessors, (20), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-09 05:11:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2024-11-09 05:11:49,194 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 58 [2024-11-09 05:11:49,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:49,194 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2024-11-09 05:11:49,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-09 05:11:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2024-11-09 05:11:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 05:11:49,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:11:49,197 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:11:49,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:49,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:49,398 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:11:49,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:11:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash 6870194, now seen corresponding path program 4 times [2024-11-09 05:11:49,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:11:49,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599645789] [2024-11-09 05:11:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:11:49,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:11:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2024-11-09 05:11:51,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:11:51,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599645789] [2024-11-09 05:11:51,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599645789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:11:51,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032195401] [2024-11-09 05:11:51,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 05:11:51,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:11:51,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:11:51,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:11:51,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 05:11:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:11:51,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:11:51,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:11:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-09 05:11:54,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:11:54,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032195401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:11:54,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:11:54,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2024-11-09 05:11:54,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782693887] [2024-11-09 05:11:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:11:54,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 05:11:54,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:11:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 05:11:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:11:54,971 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 9 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 7 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 05:11:55,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:11:55,980 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2024-11-09 05:11:55,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 05:11:55,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 7 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 76 [2024-11-09 05:11:55,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:11:55,981 INFO L225 Difference]: With dead ends: 83 [2024-11-09 05:11:55,981 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 05:11:55,982 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2024-11-09 05:11:55,982 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 05:11:55,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 108 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 05:11:55,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 05:11:55,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 05:11:55,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:11:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 05:11:55,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 76 [2024-11-09 05:11:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:11:55,985 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 05:11:55,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 7 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-09 05:11:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 05:11:55,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 05:11:55,988 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 05:11:56,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 05:11:56,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 05:11:56,192 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1] [2024-11-09 05:11:56,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 05:12:18,922 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:12:18,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:12:18 BoogieIcfgContainer [2024-11-09 05:12:18,954 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:12:18,955 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:12:18,955 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:12:18,956 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:12:18,956 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:09:46" (3/4) ... [2024-11-09 05:12:18,959 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 05:12:18,964 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-09 05:12:18,964 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-09 05:12:18,970 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-09 05:12:18,970 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-09 05:12:18,970 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 05:12:18,971 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 05:12:19,093 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:12:19,094 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 05:12:19,094 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:12:19,095 INFO L158 Benchmark]: Toolchain (without parser) took 153531.39ms. Allocated memory was 121.6MB in the beginning and 302.0MB in the end (delta: 180.4MB). Free memory was 86.7MB in the beginning and 267.9MB in the end (delta: -181.2MB). Peak memory consumption was 177.5MB. Max. memory is 16.1GB. [2024-11-09 05:12:19,095 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 121.6MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:12:19,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.97ms. Allocated memory is still 121.6MB. Free memory was 86.3MB in the beginning and 73.3MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 05:12:19,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.65ms. Allocated memory is still 121.6MB. Free memory was 73.3MB in the beginning and 71.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:12:19,097 INFO L158 Benchmark]: Boogie Preprocessor took 27.93ms. Allocated memory is still 121.6MB. Free memory was 71.6MB in the beginning and 70.7MB in the end (delta: 885.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:12:19,097 INFO L158 Benchmark]: RCFGBuilder took 444.58ms. Allocated memory is still 121.6MB. Free memory was 70.7MB in the beginning and 57.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 05:12:19,098 INFO L158 Benchmark]: TraceAbstraction took 152421.59ms. Allocated memory was 121.6MB in the beginning and 302.0MB in the end (delta: 180.4MB). Free memory was 56.5MB in the beginning and 95.4MB in the end (delta: -38.9MB). Peak memory consumption was 141.9MB. Max. memory is 16.1GB. [2024-11-09 05:12:19,098 INFO L158 Benchmark]: Witness Printer took 139.13ms. Allocated memory is still 302.0MB. Free memory was 95.4MB in the beginning and 267.9MB in the end (delta: -172.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 05:12:19,101 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 121.6MB. Free memory is still 68.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.97ms. Allocated memory is still 121.6MB. Free memory was 86.3MB in the beginning and 73.3MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.65ms. Allocated memory is still 121.6MB. Free memory was 73.3MB in the beginning and 71.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.93ms. Allocated memory is still 121.6MB. Free memory was 71.6MB in the beginning and 70.7MB in the end (delta: 885.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.58ms. Allocated memory is still 121.6MB. Free memory was 70.7MB in the beginning and 57.4MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 152421.59ms. Allocated memory was 121.6MB in the beginning and 302.0MB in the end (delta: 180.4MB). Free memory was 56.5MB in the beginning and 95.4MB in the end (delta: -38.9MB). Peak memory consumption was 141.9MB. Max. memory is 16.1GB. * Witness Printer took 139.13ms. Allocated memory is still 302.0MB. Free memory was 95.4MB in the beginning and 267.9MB in the end (delta: -172.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 129.5s, OverallIterations: 10, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 27.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 1207 SdHoareTripleChecker+Invalid, 6.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 944 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 675 IncrementalHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 263 mSDtfsCounter, 675 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 750 GetRequests, 620 SyntacticMatches, 5 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 98.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=9, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 14 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 788 NumberOfCodeBlocks, 769 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 754 ConstructedInterpolants, 0 QuantifiedInterpolants, 2704 SizeOfPredicates, 27 NumberOfNonLiveVariables, 933 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 1219/1271 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((p == 1) && (r == 0)) && (a == x)) || ((((p == 1) && (((__int128) r + 1) == 0)) && (((long long) y + 1) <= x)) && (x == ((__int128) a + y)))) && (x != y)) && (1 <= y)) && (((__int128) a + b) <= 2)) && (1 <= x)) && ((((b == y) && (q == 0)) && (s == 1)) || ((((x <= y) && (((__int128) q + 1) == 0)) && (y == ((__int128) b + x))) && (s == 1)))) || ((((((((((p == 1) && (b == y)) && (b <= 2)) && (1 <= b)) && (r == 0)) && (q == 0)) && (1 <= x)) && (a == x)) && (x <= 2)) && (s == 1))) - ProcedureContractResult [Line: 7]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not. Ensures: (cond != 0) - ProcedureContractResult [Line: 10]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-11-09 05:12:19,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2e9c783-e114-4193-9154-cc5dfd463022/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE