./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/vogal-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/vogal-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX --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 d71e1bf3f69689e919d6628cf273516827c854b2b9e73a5faa1a7ff2c381c776 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:49:41,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:49:41,973 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:49:41,979 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:49:41,980 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:49:42,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:49:42,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:49:42,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:49:42,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:49:42,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:49:42,015 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:49:42,016 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:49:42,017 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:49:42,021 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:49:42,022 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:49:42,022 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:49:42,024 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:49:42,025 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:49:42,025 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:49:42,026 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:49:42,026 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:49:42,027 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:49:42,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:49:42,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:49:42,029 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:49:42,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:49:42,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:49:42,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:49:42,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:49:42,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:49:42,032 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:49:42,032 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:49:42,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:49:42,033 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:49:42,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:49:42,033 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:49:42,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:49:42,034 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:49:42,034 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:49:42,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:49:42,035 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:49:42,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:49:42,036 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:49:42,036 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:49:42,037 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:49:42,037 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_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d71e1bf3f69689e919d6628cf273516827c854b2b9e73a5faa1a7ff2c381c776 [2023-11-12 00:49:42,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:49:42,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:49:42,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:49:42,317 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:49:42,317 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:49:42,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/loops/vogal-2.i [2023-11-12 00:49:45,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:49:45,651 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:49:45,652 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/sv-benchmarks/c/loops/vogal-2.i [2023-11-12 00:49:45,660 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/data/040d7ea53/a31cde7b986344ffa721d3761a191062/FLAG72b86f9c0 [2023-11-12 00:49:45,676 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/data/040d7ea53/a31cde7b986344ffa721d3761a191062 [2023-11-12 00:49:45,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:49:45,681 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:49:45,682 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:49:45,683 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:49:45,691 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:49:45,692 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:45" (1/1) ... [2023-11-12 00:49:45,693 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19489a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:45, skipping insertion in model container [2023-11-12 00:49:45,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:49:45" (1/1) ... [2023-11-12 00:49:45,716 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:49:45,926 WARN L240 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_2499eeb4-e7cd-43b7-97c6-db668f3e2869/sv-benchmarks/c/loops/vogal-2.i[808,821] [2023-11-12 00:49:45,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:49:45,977 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:49:45,994 WARN L240 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_2499eeb4-e7cd-43b7-97c6-db668f3e2869/sv-benchmarks/c/loops/vogal-2.i[808,821] [2023-11-12 00:49:46,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:49:46,050 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:49:46,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46 WrapperNode [2023-11-12 00:49:46,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:49:46,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:49:46,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:49:46,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:49:46,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,079 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,121 INFO L138 Inliner]: procedures = 16, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2023-11-12 00:49:46,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:49:46,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:49:46,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:49:46,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:49:46,134 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,146 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,167 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:49:46,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:49:46,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:49:46,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:49:46,184 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (1/1) ... [2023-11-12 00:49:46,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:49:46,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:46,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:49:46,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:49:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:49:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:49:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:49:46,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:49:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:49:46,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:49:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:49:46,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:49:46,335 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:49:46,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:49:46,589 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:49:46,689 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:49:46,692 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 00:49:46,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:46 BoogieIcfgContainer [2023-11-12 00:49:46,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:49:46,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:49:46,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:49:46,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:49:46,712 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:49:45" (1/3) ... [2023-11-12 00:49:46,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28363f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:46, skipping insertion in model container [2023-11-12 00:49:46,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:49:46" (2/3) ... [2023-11-12 00:49:46,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28363f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:49:46, skipping insertion in model container [2023-11-12 00:49:46,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:46" (3/3) ... [2023-11-12 00:49:46,718 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2023-11-12 00:49:46,739 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:49:46,739 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 00:49:46,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:49:46,812 INFO L357 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, mHoare=true, 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;@52a9e04d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:49:46,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 00:49:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 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) [2023-11-12 00:49:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:49:46,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:46,829 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:46,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:46,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash -969448755, now seen corresponding path program 1 times [2023-11-12 00:49:46,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:46,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584683316] [2023-11-12 00:49:46,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:49:47,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:47,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584683316] [2023-11-12 00:49:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584683316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:49:47,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:49:47,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:49:47,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844102280] [2023-11-12 00:49:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:47,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 00:49:47,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:47,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 00:49:47,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:49:47,164 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 15 states have internal predecessors, (24), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-12 00:49:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:47,213 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2023-11-12 00:49:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 00:49:47,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2023-11-12 00:49:47,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:47,227 INFO L225 Difference]: With dead ends: 28 [2023-11-12 00:49:47,227 INFO L226 Difference]: Without dead ends: 14 [2023-11-12 00:49:47,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 00:49:47,237 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:47,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:49:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-12 00:49:47,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-12 00:49:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2023-11-12 00:49:47,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2023-11-12 00:49:47,274 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9 [2023-11-12 00:49:47,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:47,275 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2023-11-12 00:49:47,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-12 00:49:47,276 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2023-11-12 00:49:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 00:49:47,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:47,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:47,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:49:47,280 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:47,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1630845269, now seen corresponding path program 1 times [2023-11-12 00:49:47,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:47,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281798119] [2023-11-12 00:49:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:47,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:49:47,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:47,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281798119] [2023-11-12 00:49:47,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281798119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:49:47,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:49:47,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:49:47,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258745544] [2023-11-12 00:49:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:47,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:49:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:47,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:49:47,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:49:47,487 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-11-12 00:49:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:47,568 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2023-11-12 00:49:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:49:47,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2023-11-12 00:49:47,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:47,571 INFO L225 Difference]: With dead ends: 36 [2023-11-12 00:49:47,571 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:49:47,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:49:47,574 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:47,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:49:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:49:47,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2023-11-12 00:49:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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) [2023-11-12 00:49:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2023-11-12 00:49:47,587 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 11 [2023-11-12 00:49:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:47,589 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2023-11-12 00:49:47,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2023-11-12 00:49:47,590 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2023-11-12 00:49:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-12 00:49:47,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:47,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:47,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:49:47,592 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:47,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:47,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1071345973, now seen corresponding path program 1 times [2023-11-12 00:49:47,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:47,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142927792] [2023-11-12 00:49:47,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:47,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:49:47,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:47,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142927792] [2023-11-12 00:49:47,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142927792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:47,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684376003] [2023-11-12 00:49:47,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:47,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:47,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:47,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:49:47,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:49:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:47,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 00:49:47,952 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:49:48,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:49:48,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684376003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:49:48,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:49:48,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-11-12 00:49:48,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755236450] [2023-11-12 00:49:48,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:48,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:49:48,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:49:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:49:48,047 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-12 00:49:48,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:48,124 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2023-11-12 00:49:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:49:48,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) Word has length 12 [2023-11-12 00:49:48,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:48,125 INFO L225 Difference]: With dead ends: 31 [2023-11-12 00:49:48,125 INFO L226 Difference]: Without dead ends: 27 [2023-11-12 00:49:48,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:49:48,127 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:48,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 45 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:49:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-12 00:49:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2023-11-12 00:49:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 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) [2023-11-12 00:49:48,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2023-11-12 00:49:48,134 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 12 [2023-11-12 00:49:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:48,135 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2023-11-12 00:49:48,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2023-11-12 00:49:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2023-11-12 00:49:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:49:48,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:48,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:48,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:49:48,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:48,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:48,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:48,343 INFO L85 PathProgramCache]: Analyzing trace with hash 467291556, now seen corresponding path program 1 times [2023-11-12 00:49:48,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:48,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170415427] [2023-11-12 00:49:48,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:48,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:49:48,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:48,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170415427] [2023-11-12 00:49:48,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170415427] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:48,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143737934] [2023-11-12 00:49:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:48,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:48,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:48,557 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:49:48,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:49:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:48,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:49:48,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:48,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:49:48,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:49:48,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143737934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:49:48,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:49:48,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2023-11-12 00:49:48,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036792920] [2023-11-12 00:49:48,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:48,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:49:48,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:48,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:49:48,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:49:48,680 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-12 00:49:48,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:48,772 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2023-11-12 00:49:48,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:49:48,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) Word has length 15 [2023-11-12 00:49:48,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:48,774 INFO L225 Difference]: With dead ends: 52 [2023-11-12 00:49:48,775 INFO L226 Difference]: Without dead ends: 38 [2023-11-12 00:49:48,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:49:48,778 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:48,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:49:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-12 00:49:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2023-11-12 00:49:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 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) [2023-11-12 00:49:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2023-11-12 00:49:48,791 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 15 [2023-11-12 00:49:48,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:48,792 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2023-11-12 00:49:48,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-12 00:49:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2023-11-12 00:49:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:49:48,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:48,793 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:48,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-12 00:49:48,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:48,999 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:49,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:49,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2121157047, now seen corresponding path program 1 times [2023-11-12 00:49:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:49,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084209213] [2023-11-12 00:49:49,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:49,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:49:49,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:49,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084209213] [2023-11-12 00:49:49,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084209213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:49,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931524890] [2023-11-12 00:49:49,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:49,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:49,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:49,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:49:49,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:49:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:49,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 00:49:49,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:49,387 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-12 00:49:49,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:49:49,571 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-12 00:49:49,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2023-11-12 00:49:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:49:49,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931524890] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:49,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:49:49,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 8] total 15 [2023-11-12 00:49:49,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276798027] [2023-11-12 00:49:49,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:49,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:49:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:49:49,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:49:49,609 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2023-11-12 00:49:49,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:49,807 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-11-12 00:49:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:49:49,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) Word has length 16 [2023-11-12 00:49:49,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:49,809 INFO L225 Difference]: With dead ends: 36 [2023-11-12 00:49:49,809 INFO L226 Difference]: Without dead ends: 22 [2023-11-12 00:49:49,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:49:49,811 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:49,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 40 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:49:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-12 00:49:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-12 00:49:49,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 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) [2023-11-12 00:49:49,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-11-12 00:49:49,817 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 16 [2023-11-12 00:49:49,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:49,817 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-11-12 00:49:49,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 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) [2023-11-12 00:49:49,818 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-11-12 00:49:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-12 00:49:49,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:49,819 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:49,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:49:50,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:50,026 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:50,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:50,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1738556233, now seen corresponding path program 1 times [2023-11-12 00:49:50,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:50,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630547049] [2023-11-12 00:49:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:49:50,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:50,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630547049] [2023-11-12 00:49:50,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630547049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:50,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81436191] [2023-11-12 00:49:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:50,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:50,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:50,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:49:50,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:49:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:50,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 00:49:50,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:50,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-12 00:49:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:49:50,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:49:50,502 INFO L322 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-12 00:49:50,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2023-11-12 00:49:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:49:50,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81436191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:49:50,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [713865745] [2023-11-12 00:49:50,545 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:49:50,546 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:49:50,549 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:49:50,554 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:49:50,555 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:49:51,462 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:49:51,986 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '750#(and (= |ULTIMATE.start_main_~cont_aux~0#1| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (not (= (mod |ULTIMATE.start_main_~cont~0#1| 4294967296) 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (exists ((|v_ULTIMATE.start_main_~i~0#1_66| Int)) (and (<= 8 (mod |ULTIMATE.start_main_~j~0#1| 4294967296)) (<= (mod |ULTIMATE.start_main_~n_caracter~0#1| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_66| 4294967296)))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) |ULTIMATE.start_main_~#string_entrada~0#1.offset|) 0))' at error location [2023-11-12 00:49:51,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:49:51,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:49:51,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 8, 7] total 15 [2023-11-12 00:49:51,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376492430] [2023-11-12 00:49:51,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:49:51,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-12 00:49:51,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:51,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-12 00:49:51,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-12 00:49:51,989 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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) [2023-11-12 00:49:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:52,328 INFO L93 Difference]: Finished difference Result 89 states and 123 transitions. [2023-11-12 00:49:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 00:49:52,329 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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) Word has length 17 [2023-11-12 00:49:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:52,330 INFO L225 Difference]: With dead ends: 89 [2023-11-12 00:49:52,330 INFO L226 Difference]: Without dead ends: 70 [2023-11-12 00:49:52,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2023-11-12 00:49:52,332 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 96 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:52,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 56 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:49:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-12 00:49:52,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 25. [2023-11-12 00:49:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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) [2023-11-12 00:49:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-11-12 00:49:52,341 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 17 [2023-11-12 00:49:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:52,342 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-11-12 00:49:52,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 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) [2023-11-12 00:49:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-11-12 00:49:52,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-12 00:49:52,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:52,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:52,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:49:52,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:52,549 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:52,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:52,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1327780082, now seen corresponding path program 1 times [2023-11-12 00:49:52,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:52,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169524617] [2023-11-12 00:49:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:52,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 00:49:52,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:52,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169524617] [2023-11-12 00:49:52,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169524617] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:52,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324101453] [2023-11-12 00:49:52,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:52,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:52,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:52,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:49:52,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:49:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:52,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 00:49:52,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 00:49:52,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:49:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 00:49:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324101453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:49:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1743024219] [2023-11-12 00:49:52,854 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-12 00:49:52,854 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:49:52,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:49:52,855 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:49:52,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:49:53,619 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:49:54,221 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1069#(and (<= 10 (mod |ULTIMATE.start_main_~j~0#1| 4294967296)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (or (and (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296))) 0) (<= 2147483648 (mod |ULTIMATE.start_main_~i~0#1| 4294967296))) (and (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset|)) 0))) (not (= (mod |ULTIMATE.start_main_~cont~0#1| 4294967296) (mod |ULTIMATE.start_main_~cont_aux~0#1| 4294967296))))' at error location [2023-11-12 00:49:54,221 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:49:54,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:49:54,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2023-11-12 00:49:54,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755637292] [2023-11-12 00:49:54,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:49:54,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:49:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:54,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:49:54,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-11-12 00:49:54,224 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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) [2023-11-12 00:49:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:54,850 INFO L93 Difference]: Finished difference Result 126 states and 183 transitions. [2023-11-12 00:49:54,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-12 00:49:54,850 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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) Word has length 19 [2023-11-12 00:49:54,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:54,851 INFO L225 Difference]: With dead ends: 126 [2023-11-12 00:49:54,851 INFO L226 Difference]: Without dead ends: 105 [2023-11-12 00:49:54,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=204, Invalid=1056, Unknown=0, NotChecked=0, Total=1260 [2023-11-12 00:49:54,853 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 123 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:54,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 55 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 00:49:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-12 00:49:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 29. [2023-11-12 00:49:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 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) [2023-11-12 00:49:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2023-11-12 00:49:54,873 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 19 [2023-11-12 00:49:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:54,873 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2023-11-12 00:49:54,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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) [2023-11-12 00:49:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2023-11-12 00:49:54,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 00:49:54,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:54,875 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:54,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:49:55,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:55,082 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:55,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:55,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1570296910, now seen corresponding path program 1 times [2023-11-12 00:49:55,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:55,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030429304] [2023-11-12 00:49:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:55,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 00:49:55,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:55,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030429304] [2023-11-12 00:49:55,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030429304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:55,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560337595] [2023-11-12 00:49:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:55,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:55,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:55,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:49:55,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:49:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:55,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 00:49:55,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 00:49:55,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:49:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-12 00:49:55,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560337595] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:49:55,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [487445293] [2023-11-12 00:49:55,439 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-12 00:49:55,440 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:49:55,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:49:55,440 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:49:55,441 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:49:56,087 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:49:56,709 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1507#(and (<= 10 (mod |ULTIMATE.start_main_~j~0#1| 4294967296)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (or (and (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296))) 0) (<= 2147483648 (mod |ULTIMATE.start_main_~i~0#1| 4294967296))) (and (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset|)) 0))) (not (= (mod |ULTIMATE.start_main_~cont~0#1| 4294967296) (mod |ULTIMATE.start_main_~cont_aux~0#1| 4294967296))))' at error location [2023-11-12 00:49:56,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:49:56,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:49:56,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-12 00:49:56,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050291397] [2023-11-12 00:49:56,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:49:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-12 00:49:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 00:49:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:49:56,711 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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) [2023-11-12 00:49:57,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:57,852 INFO L93 Difference]: Finished difference Result 138 states and 208 transitions. [2023-11-12 00:49:57,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-12 00:49:57,858 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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) Word has length 23 [2023-11-12 00:49:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:57,860 INFO L225 Difference]: With dead ends: 138 [2023-11-12 00:49:57,860 INFO L226 Difference]: Without dead ends: 114 [2023-11-12 00:49:57,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=416, Invalid=1840, Unknown=0, NotChecked=0, Total=2256 [2023-11-12 00:49:57,863 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 126 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:57,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 111 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:49:57,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-12 00:49:57,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 42. [2023-11-12 00:49:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 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) [2023-11-12 00:49:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2023-11-12 00:49:57,887 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 23 [2023-11-12 00:49:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:57,888 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2023-11-12 00:49:57,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 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) [2023-11-12 00:49:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2023-11-12 00:49:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 00:49:57,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:57,889 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:57,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:49:58,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:58,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:58,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:58,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1847823321, now seen corresponding path program 2 times [2023-11-12 00:49:58,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:58,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330776167] [2023-11-12 00:49:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:58,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:58,302 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-12 00:49:58,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:58,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330776167] [2023-11-12 00:49:58,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330776167] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:58,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227507783] [2023-11-12 00:49:58,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:49:58,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:58,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:58,304 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:49:58,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:49:58,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-12 00:49:58,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:49:58,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-12 00:49:58,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-12 00:49:58,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:49:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-12 00:49:58,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227507783] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:58,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:49:58,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 8] total 18 [2023-11-12 00:49:58,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342255312] [2023-11-12 00:49:58,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:49:58,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:49:58,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:49:58,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:49:58,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-12 00:49:58,827 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2023-11-12 00:49:59,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:49:59,003 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2023-11-12 00:49:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:49:59,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) Word has length 28 [2023-11-12 00:49:59,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:49:59,005 INFO L225 Difference]: With dead ends: 65 [2023-11-12 00:49:59,005 INFO L226 Difference]: Without dead ends: 50 [2023-11-12 00:49:59,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-12 00:49:59,007 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:49:59,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:49:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-12 00:49:59,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2023-11-12 00:49:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 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) [2023-11-12 00:49:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-11-12 00:49:59,032 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 28 [2023-11-12 00:49:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:49:59,033 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-11-12 00:49:59,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2023-11-12 00:49:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-11-12 00:49:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-12 00:49:59,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:49:59,034 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:49:59,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:49:59,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:59,240 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:49:59,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:49:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1103975400, now seen corresponding path program 1 times [2023-11-12 00:49:59,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:49:59,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324682368] [2023-11-12 00:49:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:49:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:59,534 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-12 00:49:59,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:49:59,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324682368] [2023-11-12 00:49:59,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324682368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:49:59,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503663046] [2023-11-12 00:49:59,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:49:59,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:49:59,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:49:59,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:49:59,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 00:49:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:49:59,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-12 00:49:59,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:49:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-12 00:49:59,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:49:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 00:49:59,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503663046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:49:59,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1916889968] [2023-11-12 00:49:59,904 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-12 00:49:59,904 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:49:59,905 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:49:59,905 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:49:59,905 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:50:00,750 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:50:01,501 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2461#(and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (or (< 9 (mod |ULTIMATE.start_main_~j~0#1| 4294967296)) (and (= |ULTIMATE.start_main_~cont_aux~0#1| 0) (exists ((|v_ULTIMATE.start_main_~i~0#1_115| Int)) (and (<= 8 (mod |ULTIMATE.start_main_~j~0#1| 4294967296)) (<= (mod |ULTIMATE.start_main_~n_caracter~0#1| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_115| 4294967296)))) (= |ULTIMATE.start_main_~i~0#1| 0))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (or (and (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296))) 0) (<= 2147483648 (mod |ULTIMATE.start_main_~i~0#1| 4294967296))) (and (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset|)) 0))) (not (= (mod |ULTIMATE.start_main_~cont~0#1| 4294967296) (mod |ULTIMATE.start_main_~cont_aux~0#1| 4294967296))))' at error location [2023-11-12 00:50:01,502 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:50:01,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:50:01,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 11] total 17 [2023-11-12 00:50:01,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552515809] [2023-11-12 00:50:01,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:50:01,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-12 00:50:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:01,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-12 00:50:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2023-11-12 00:50:01,504 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 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) [2023-11-12 00:50:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:03,006 INFO L93 Difference]: Finished difference Result 269 states and 317 transitions. [2023-11-12 00:50:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-12 00:50:03,007 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 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) Word has length 32 [2023-11-12 00:50:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:03,008 INFO L225 Difference]: With dead ends: 269 [2023-11-12 00:50:03,008 INFO L226 Difference]: Without dead ends: 232 [2023-11-12 00:50:03,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=299, Invalid=1261, Unknown=0, NotChecked=0, Total=1560 [2023-11-12 00:50:03,011 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 340 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:03,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 241 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 00:50:03,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-12 00:50:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 49. [2023-11-12 00:50:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 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) [2023-11-12 00:50:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-11-12 00:50:03,039 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 32 [2023-11-12 00:50:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:03,039 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-11-12 00:50:03,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 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) [2023-11-12 00:50:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-11-12 00:50:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-12 00:50:03,041 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:03,041 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:03,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 00:50:03,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-12 00:50:03,244 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:03,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1358463064, now seen corresponding path program 2 times [2023-11-12 00:50:03,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:03,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265328728] [2023-11-12 00:50:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-12 00:50:03,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:03,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265328728] [2023-11-12 00:50:03,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265328728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:50:03,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250238613] [2023-11-12 00:50:03,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:50:03,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:03,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:03,518 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:50:03,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 00:50:03,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-12 00:50:03,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:50:03,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 00:50:03,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:50:03,850 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-12 00:50:03,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:50:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-12 00:50:03,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250238613] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:50:03,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [750346523] [2023-11-12 00:50:03,928 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-12 00:50:03,929 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:50:03,929 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:50:03,929 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:50:03,929 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:50:04,650 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:50:05,290 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3287#(and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (or (< 9 (mod |ULTIMATE.start_main_~j~0#1| 4294967296)) (and (= |ULTIMATE.start_main_~cont_aux~0#1| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (exists ((|v_ULTIMATE.start_main_~i~0#1_129| Int)) (and (<= (mod |ULTIMATE.start_main_~n_caracter~0#1| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_129| 4294967296)) (<= 8 (mod |ULTIMATE.start_main_~j~0#1| 4294967296)))))) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (or (and (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296))) 0) (<= 2147483648 (mod |ULTIMATE.start_main_~i~0#1| 4294967296))) (and (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset|)) 0))) (not (= (mod |ULTIMATE.start_main_~cont~0#1| 4294967296) (mod |ULTIMATE.start_main_~cont_aux~0#1| 4294967296))))' at error location [2023-11-12 00:50:05,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:50:05,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:50:05,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-11-12 00:50:05,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124993956] [2023-11-12 00:50:05,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:50:05,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 00:50:05,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 00:50:05,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-11-12 00:50:05,295 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2023-11-12 00:50:05,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:05,527 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2023-11-12 00:50:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 00:50:05,528 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) Word has length 38 [2023-11-12 00:50:05,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:05,529 INFO L225 Difference]: With dead ends: 81 [2023-11-12 00:50:05,529 INFO L226 Difference]: Without dead ends: 59 [2023-11-12 00:50:05,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2023-11-12 00:50:05,530 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:05,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:50:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-12 00:50:05,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-12 00:50:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 states have internal predecessors, (66), 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) [2023-11-12 00:50:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2023-11-12 00:50:05,565 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 38 [2023-11-12 00:50:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:05,566 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2023-11-12 00:50:05,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) [2023-11-12 00:50:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2023-11-12 00:50:05,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-12 00:50:05,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:05,568 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:05,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 00:50:05,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-12 00:50:05,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:05,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash 280384808, now seen corresponding path program 3 times [2023-11-12 00:50:05,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:05,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551726213] [2023-11-12 00:50:05,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:05,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:50:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-12 00:50:06,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:50:06,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551726213] [2023-11-12 00:50:06,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551726213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:50:06,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920602232] [2023-11-12 00:50:06,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 00:50:06,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:50:06,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:50:06,329 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:50:06,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 00:50:06,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 00:50:06,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:50:06,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-12 00:50:06,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:50:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-12 00:50:06,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:50:06,955 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-12 00:50:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920602232] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:50:06,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [177367361] [2023-11-12 00:50:06,958 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-12 00:50:06,958 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:50:06,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:50:06,959 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:50:06,959 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:50:07,583 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:50:08,459 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3838#(and (or (and (exists ((|v_ULTIMATE.start_main_~i~0#1_150| Int)) (and (<= (mod |ULTIMATE.start_main_~n_caracter~0#1| 4294967296) (mod |v_ULTIMATE.start_main_~i~0#1_150| 4294967296)) (<= 8 (mod |ULTIMATE.start_main_~j~0#1| 4294967296)))) (= |ULTIMATE.start_main_~cont_aux~0#1| 0) (= |ULTIMATE.start_main_~i~0#1| 0)) (< 9 (mod |ULTIMATE.start_main_~j~0#1| 4294967296))) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (or (and (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset| (- 4294967296))) 0) (<= 2147483648 (mod |ULTIMATE.start_main_~i~0#1| 4294967296))) (and (<= (mod |ULTIMATE.start_main_~i~0#1| 4294967296) 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#string_entrada~0#1.base|) (+ (mod |ULTIMATE.start_main_~i~0#1| 4294967296) |ULTIMATE.start_main_~#string_entrada~0#1.offset|)) 0))) (not (= (mod |ULTIMATE.start_main_~cont~0#1| 4294967296) (mod |ULTIMATE.start_main_~cont_aux~0#1| 4294967296))))' at error location [2023-11-12 00:50:08,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:50:08,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 00:50:08,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 11] total 30 [2023-11-12 00:50:08,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917025308] [2023-11-12 00:50:08,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 00:50:08,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-12 00:50:08,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:50:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-12 00:50:08,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2023-11-12 00:50:08,463 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 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) [2023-11-12 00:50:13,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:50:13,410 INFO L93 Difference]: Finished difference Result 326 states and 383 transitions. [2023-11-12 00:50:13,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-11-12 00:50:13,416 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 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) Word has length 44 [2023-11-12 00:50:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:50:13,419 INFO L225 Difference]: With dead ends: 326 [2023-11-12 00:50:13,419 INFO L226 Difference]: Without dead ends: 297 [2023-11-12 00:50:13,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4624 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1252, Invalid=15260, Unknown=0, NotChecked=0, Total=16512 [2023-11-12 00:50:13,427 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 270 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 4370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:50:13,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 832 Invalid, 4370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 3984 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-12 00:50:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-12 00:50:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 61. [2023-11-12 00:50:13,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1) internal successors, (66), 60 states have internal predecessors, (66), 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) [2023-11-12 00:50:13,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2023-11-12 00:50:13,479 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 44 [2023-11-12 00:50:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:50:13,480 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2023-11-12 00:50:13,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 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) [2023-11-12 00:50:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2023-11-12 00:50:13,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-12 00:50:13,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:50:13,482 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:13,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 00:50:13,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 00:50:13,688 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:50:13,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:50:13,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1264749720, now seen corresponding path program 4 times [2023-11-12 00:50:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:50:13,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165706815] [2023-11-12 00:50:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:50:13,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:50:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:50:14,573 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 00:50:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 00:50:15,328 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-12 00:50:15,328 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 00:50:15,329 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 00:50:15,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 00:50:15,334 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:50:15,338 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 00:50:15,368 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-12 00:50:15,369 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-12 00:50:15,370 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,370 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,371 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,371 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,372 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,372 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,372 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,373 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,373 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,374 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,374 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-12 00:50:15,374 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,374 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,375 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,375 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,375 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,376 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,376 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,376 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,377 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,377 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,377 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,377 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,378 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,378 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,378 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,379 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,379 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,379 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,380 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,380 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,380 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,381 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,381 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,381 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,381 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,382 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-12 00:50:15,382 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:50:15 BoogieIcfgContainer [2023-11-12 00:50:15,399 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 00:50:15,400 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 00:50:15,400 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 00:50:15,400 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 00:50:15,401 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:49:46" (3/4) ... [2023-11-12 00:50:15,402 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-12 00:50:15,412 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-12 00:50:15,413 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-12 00:50:15,413 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,414 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,414 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,414 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,415 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,415 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,415 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,416 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,416 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,416 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,417 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,417 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-12 00:50:15,417 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,417 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,418 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,418 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,418 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,418 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,419 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,419 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,419 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,420 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,420 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,420 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,420 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,421 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,421 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,421 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,421 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,422 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,422 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,422 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,422 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,423 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,423 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,423 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-12 00:50:15,423 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-12 00:50:15,423 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-12 00:50:15,495 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2499eeb4-e7cd-43b7-97c6-db668f3e2869/bin/utaipan-verify-NcY6lQBIFX/witness.graphml [2023-11-12 00:50:15,495 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 00:50:15,496 INFO L158 Benchmark]: Toolchain (without parser) took 29815.15ms. Allocated memory was 180.4MB in the beginning and 377.5MB in the end (delta: 197.1MB). Free memory was 137.4MB in the beginning and 171.4MB in the end (delta: -34.0MB). Peak memory consumption was 165.2MB. Max. memory is 16.1GB. [2023-11-12 00:50:15,496 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory was 81.9MB in the beginning and 81.7MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:50:15,497 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.10ms. Allocated memory is still 180.4MB. Free memory was 137.4MB in the beginning and 125.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:50:15,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.07ms. Allocated memory is still 180.4MB. Free memory was 125.9MB in the beginning and 124.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:50:15,498 INFO L158 Benchmark]: Boogie Preprocessor took 49.82ms. Allocated memory is still 180.4MB. Free memory was 124.1MB in the beginning and 122.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 00:50:15,498 INFO L158 Benchmark]: RCFGBuilder took 526.23ms. Allocated memory is still 180.4MB. Free memory was 122.8MB in the beginning and 104.4MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 00:50:15,499 INFO L158 Benchmark]: TraceAbstraction took 28696.41ms. Allocated memory was 180.4MB in the beginning and 377.5MB in the end (delta: 197.1MB). Free memory was 103.9MB in the beginning and 176.7MB in the end (delta: -72.8MB). Peak memory consumption was 125.4MB. Max. memory is 16.1GB. [2023-11-12 00:50:15,499 INFO L158 Benchmark]: Witness Printer took 95.24ms. Allocated memory is still 377.5MB. Free memory was 176.7MB in the beginning and 171.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 00:50:15,504 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory was 81.9MB in the beginning and 81.7MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.10ms. Allocated memory is still 180.4MB. Free memory was 137.4MB in the beginning and 125.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.07ms. Allocated memory is still 180.4MB. Free memory was 125.9MB in the beginning and 124.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.82ms. Allocated memory is still 180.4MB. Free memory was 124.1MB in the beginning and 122.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 526.23ms. Allocated memory is still 180.4MB. Free memory was 122.8MB in the beginning and 104.4MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 28696.41ms. Allocated memory was 180.4MB in the beginning and 377.5MB in the end (delta: 197.1MB). Free memory was 103.9MB in the beginning and 176.7MB in the end (delta: -72.8MB). Peak memory consumption was 125.4MB. Max. memory is 16.1GB. * Witness Printer took 95.24ms. Allocated memory is still 377.5MB. Free memory was 176.7MB in the beginning and 171.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] char string_entrada[10], vetor_vogais[]={'a','A','e','E','i','I','o','O','u','U','\0'}; [L27] unsigned int i,j,cont, tam_string, n_caracter; [L29] i=0 VAL [i=0, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=1, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=2, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=3, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=4, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=5, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=6, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=7, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=8, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=9, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND TRUE i<10 [L30] string_entrada[i] = __VERIFIER_nondet_char() [L29] i++ VAL [i=10, string_entrada={13:0}, vetor_vogais={12:0}] [L29] COND FALSE !(i<10) [L32] string_entrada[10 -1]='\0' [L34] n_caracter = 0 VAL [i=10, n_caracter=0, string_entrada={13:0}, vetor_vogais={12:0}] [L35] EXPR string_entrada[n_caracter] VAL [i=10, n_caracter=0, string_entrada={13:0}, vetor_vogais={12:0}] [L35] COND TRUE string_entrada[n_caracter]!='\0' [L36] n_caracter++ VAL [i=10, n_caracter=1, string_entrada={13:0}, vetor_vogais={12:0}] [L35] EXPR string_entrada[n_caracter] VAL [i=10, n_caracter=1, string_entrada={13:0}, vetor_vogais={12:0}] [L35] COND FALSE !(string_entrada[n_caracter]!='\0') [L38] cont = 0 [L39] i=0 VAL [cont=0, i=0, n_caracter=1, string_entrada={13:0}, vetor_vogais={12:0}] [L39] COND TRUE i