./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/vogal-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ --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-9bd2c7f [2023-11-19 04:59:18,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:59:19,034 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:59:19,042 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:59:19,043 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:59:19,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:59:19,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:59:19,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:59:19,086 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:59:19,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:59:19,092 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:59:19,093 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:59:19,093 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:59:19,095 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:59:19,096 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:59:19,096 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:59:19,096 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:59:19,097 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:59:19,097 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:59:19,098 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:59:19,098 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:59:19,099 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:59:19,100 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:59:19,101 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:59:19,101 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:59:19,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:59:19,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:59:19,102 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:59:19,103 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:59:19,103 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:59:19,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:59:19,105 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:59:19,105 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:59:19,106 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:59:19,106 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:59:19,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:59:19,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:59:19,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:59:19,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:59:19,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:59:19,108 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:59:19,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:59:19,108 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:59:19,108 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:59:19,109 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:59:19,109 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_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d71e1bf3f69689e919d6628cf273516827c854b2b9e73a5faa1a7ff2c381c776 [2023-11-19 04:59:19,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:59:19,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:59:19,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:59:19,392 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:59:19,393 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:59:19,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/loops/vogal-2.i [2023-11-19 04:59:22,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:59:22,889 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:59:22,890 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/sv-benchmarks/c/loops/vogal-2.i [2023-11-19 04:59:22,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/data/dc2223cc4/298809a4d65e489e99d6304e4d30c205/FLAGc39acf79f [2023-11-19 04:59:22,924 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/data/dc2223cc4/298809a4d65e489e99d6304e4d30c205 [2023-11-19 04:59:22,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:59:22,933 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:59:22,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:59:22,938 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:59:22,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:59:22,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:59:22" (1/1) ... [2023-11-19 04:59:22,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787fe8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:22, skipping insertion in model container [2023-11-19 04:59:22,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:59:22" (1/1) ... [2023-11-19 04:59:22,984 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:59:23,177 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_93eef0e1-ae05-4f60-843c-f7a8607aedc1/sv-benchmarks/c/loops/vogal-2.i[808,821] [2023-11-19 04:59:23,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:59:23,215 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:59:23,230 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_93eef0e1-ae05-4f60-843c-f7a8607aedc1/sv-benchmarks/c/loops/vogal-2.i[808,821] [2023-11-19 04:59:23,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:59:23,262 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:59:23,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23 WrapperNode [2023-11-19 04:59:23,263 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:59:23,264 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:59:23,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:59:23,265 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:59:23,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,333 INFO L138 Inliner]: procedures = 16, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2023-11-19 04:59:23,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:59:23,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:59:23,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:59:23,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:59:23,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,363 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,365 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:59:23,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:59:23,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:59:23,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:59:23,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (1/1) ... [2023-11-19 04:59:23,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:59:23,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:23,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:59:23,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:59:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:59:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:59:23,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:59:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:59:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:59:23,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:59:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:59:23,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:59:23,568 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:59:23,571 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:59:23,862 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:59:23,975 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:59:23,983 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 04:59:23,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:59:23 BoogieIcfgContainer [2023-11-19 04:59:23,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:59:23,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:59:23,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:59:23,995 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:59:23,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:59:22" (1/3) ... [2023-11-19 04:59:23,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0e08a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:59:23, skipping insertion in model container [2023-11-19 04:59:23,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:23" (2/3) ... [2023-11-19 04:59:23,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a0e08a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:59:23, skipping insertion in model container [2023-11-19 04:59:23,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:59:23" (3/3) ... [2023-11-19 04:59:23,999 INFO L112 eAbstractionObserver]: Analyzing ICFG vogal-2.i [2023-11-19 04:59:24,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:59:24,032 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:59:24,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:59:24,110 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;@58325420, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:59:24,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:59:24,118 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) [2023-11-19 04:59:24,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:59:24,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:24,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:24,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:24,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:24,131 INFO L85 PathProgramCache]: Analyzing trace with hash -969448755, now seen corresponding path program 1 times [2023-11-19 04:59:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583417710] [2023-11-19 04:59:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:59:24,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:24,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583417710] [2023-11-19 04:59:24,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583417710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:24,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:59:24,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:59:24,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229258059] [2023-11-19 04:59:24,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:24,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:59:24,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:59:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:59:24,468 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) [2023-11-19 04:59:24,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:24,526 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2023-11-19 04:59:24,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:59:24,529 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 [2023-11-19 04:59:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:24,537 INFO L225 Difference]: With dead ends: 28 [2023-11-19 04:59:24,537 INFO L226 Difference]: Without dead ends: 14 [2023-11-19 04:59:24,543 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 [2023-11-19 04:59:24,549 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 [2023-11-19 04:59:24,551 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] [2023-11-19 04:59:24,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-19 04:59:24,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-19 04:59:24,589 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) [2023-11-19 04:59:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2023-11-19 04:59:24,592 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9 [2023-11-19 04:59:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:24,593 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2023-11-19 04:59:24,594 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) [2023-11-19 04:59:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2023-11-19 04:59:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:59:24,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:24,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:24,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:59:24,598 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:24,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:24,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1630845269, now seen corresponding path program 1 times [2023-11-19 04:59:24,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:24,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646878850] [2023-11-19 04:59:24,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:24,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:24,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:59:24,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:24,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646878850] [2023-11-19 04:59:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646878850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:24,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:59:24,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:59:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628107356] [2023-11-19 04:59:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:24,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:59:24,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:24,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:59:24,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:59:24,855 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) [2023-11-19 04:59:24,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:24,902 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2023-11-19 04:59:24,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:59:24,903 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 [2023-11-19 04:59:24,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:24,904 INFO L225 Difference]: With dead ends: 36 [2023-11-19 04:59:24,905 INFO L226 Difference]: Without dead ends: 24 [2023-11-19 04:59:24,905 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 [2023-11-19 04:59:24,907 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:24,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 17 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:59:24,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-19 04:59:24,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2023-11-19 04:59:24,913 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) [2023-11-19 04:59:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2023-11-19 04:59:24,914 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 11 [2023-11-19 04:59:24,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:24,915 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2023-11-19 04:59:24,915 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) [2023-11-19 04:59:24,915 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2023-11-19 04:59:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 04:59:24,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:24,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:24,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:59:24,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:24,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:24,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1071345973, now seen corresponding path program 1 times [2023-11-19 04:59:24,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:24,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317311444] [2023-11-19 04:59:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:24,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:59:25,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317311444] [2023-11-19 04:59:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317311444] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:25,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994274580] [2023-11-19 04:59:25,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:25,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:25,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:25,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:25,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:59:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:25,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 04:59:25,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:59:25,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:59:25,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994274580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:25,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:59:25,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2023-11-19 04:59:25,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40322079] [2023-11-19 04:59:25,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:25,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:59:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:59:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 04:59:25,350 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) [2023-11-19 04:59:25,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:25,452 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2023-11-19 04:59:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 04:59:25,467 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 [2023-11-19 04:59:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:25,468 INFO L225 Difference]: With dead ends: 31 [2023-11-19 04:59:25,468 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 04:59:25,469 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 [2023-11-19 04:59:25,472 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-11-19 04:59:25,473 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] [2023-11-19 04:59:25,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 04:59:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2023-11-19 04:59:25,483 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) [2023-11-19 04:59:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2023-11-19 04:59:25,486 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 12 [2023-11-19 04:59:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:25,486 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 28 transitions. [2023-11-19 04:59:25,486 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) [2023-11-19 04:59:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions. [2023-11-19 04:59:25,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:59:25,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:25,488 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:25,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:59:25,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:25,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:25,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:25,704 INFO L85 PathProgramCache]: Analyzing trace with hash 467291556, now seen corresponding path program 1 times [2023-11-19 04:59:25,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:25,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212772058] [2023-11-19 04:59:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:25,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:25,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:59:25,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:25,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212772058] [2023-11-19 04:59:25,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212772058] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:25,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866729366] [2023-11-19 04:59:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:25,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:25,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:25,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:25,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:59:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:25,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:59:25,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:59:26,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:59:26,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866729366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:59:26,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:59:26,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2023-11-19 04:59:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282474207] [2023-11-19 04:59:26,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:26,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:59:26,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:26,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:59:26,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:59:26,017 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) [2023-11-19 04:59:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:26,068 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2023-11-19 04:59:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:59:26,069 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 [2023-11-19 04:59:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:26,070 INFO L225 Difference]: With dead ends: 52 [2023-11-19 04:59:26,070 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 04:59:26,070 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 [2023-11-19 04:59:26,072 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 16 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:26,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:59:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 04:59:26,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2023-11-19 04:59:26,078 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) [2023-11-19 04:59:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2023-11-19 04:59:26,079 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 15 [2023-11-19 04:59:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:26,080 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2023-11-19 04:59:26,080 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) [2023-11-19 04:59:26,080 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2023-11-19 04:59:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 04:59:26,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:26,081 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:26,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:26,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:26,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:26,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash -2121157047, now seen corresponding path program 1 times [2023-11-19 04:59:26,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:26,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633472307] [2023-11-19 04:59:26,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:26,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:59:26,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633472307] [2023-11-19 04:59:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633472307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516775240] [2023-11-19 04:59:26,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:26,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:26,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:26,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:26,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:59:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:26,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 04:59:26,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:59:26,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:26,798 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-19 04:59:26,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 30 [2023-11-19 04:59:26,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:59:26,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516775240] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:26,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:59:26,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 8] total 15 [2023-11-19 04:59:26,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122716781] [2023-11-19 04:59:26,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:59:26,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 04:59:26,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:26,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 04:59:26,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-19 04:59:26,832 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) [2023-11-19 04:59:27,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:27,028 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-11-19 04:59:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 04:59:27,033 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 [2023-11-19 04:59:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:27,035 INFO L225 Difference]: With dead ends: 36 [2023-11-19 04:59:27,041 INFO L226 Difference]: Without dead ends: 22 [2023-11-19 04:59:27,042 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 [2023-11-19 04:59:27,042 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 [2023-11-19 04:59:27,043 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] [2023-11-19 04:59:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-19 04:59:27,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-19 04:59:27,048 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) [2023-11-19 04:59:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-11-19 04:59:27,048 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 16 [2023-11-19 04:59:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:27,049 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-11-19 04:59:27,049 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) [2023-11-19 04:59:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-11-19 04:59:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 04:59:27,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:27,050 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:27,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:27,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:27,271 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:27,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:27,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1738556233, now seen corresponding path program 1 times [2023-11-19 04:59:27,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:27,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573314413] [2023-11-19 04:59:27,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 04:59:27,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:27,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573314413] [2023-11-19 04:59:27,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573314413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:27,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825286841] [2023-11-19 04:59:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:27,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:27,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:27,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:27,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:59:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:27,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 04:59:27,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:27,605 INFO L378 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 [2023-11-19 04:59:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:59:27,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:27,755 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-19 04:59:27,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 31 [2023-11-19 04:59:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 04:59:27,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825286841] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:27,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [653778466] [2023-11-19 04:59:27,805 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-19 04:59:27,805 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:59:27,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:59:27,815 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:59:27,815 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:59:28,927 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:59:29,453 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 [2023-11-19 04:59:29,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:59:29,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:59:29,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 8, 7] total 15 [2023-11-19 04:59:29,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134871525] [2023-11-19 04:59:29,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:29,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 04:59:29,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:29,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 04:59:29,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-19 04:59:29,456 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) [2023-11-19 04:59:29,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:29,753 INFO L93 Difference]: Finished difference Result 89 states and 123 transitions. [2023-11-19 04:59:29,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 04:59:29,754 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 [2023-11-19 04:59:29,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:29,755 INFO L225 Difference]: With dead ends: 89 [2023-11-19 04:59:29,755 INFO L226 Difference]: Without dead ends: 70 [2023-11-19 04:59:29,756 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 [2023-11-19 04:59:29,757 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:29,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 56 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:59:29,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-19 04:59:29,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 25. [2023-11-19 04:59:29,766 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) [2023-11-19 04:59:29,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-11-19 04:59:29,767 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 17 [2023-11-19 04:59:29,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:29,767 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-11-19 04:59:29,767 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) [2023-11-19 04:59:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-11-19 04:59:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:59:29,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:29,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:29,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:29,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 04:59:29,988 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:29,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:29,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1327780082, now seen corresponding path program 1 times [2023-11-19 04:59:29,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:29,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531970884] [2023-11-19 04:59:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:29,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:59:30,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:30,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531970884] [2023-11-19 04:59:30,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531970884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:30,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18578155] [2023-11-19 04:59:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:30,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:30,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:30,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:30,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:59:30,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:30,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 04:59:30,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:59:30,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:59:30,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18578155] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:30,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [233989573] [2023-11-19 04:59:30,242 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-19 04:59:30,243 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:59:30,243 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:59:30,243 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:59:30,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:59:31,140 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:59:31,640 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1068#(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 [2023-11-19 04:59:31,641 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:59:31,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:59:31,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-19 04:59:31,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115883005] [2023-11-19 04:59:31,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:31,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 04:59:31,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:31,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 04:59:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-19 04:59:31,643 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) [2023-11-19 04:59:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:32,112 INFO L93 Difference]: Finished difference Result 90 states and 137 transitions. [2023-11-19 04:59:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 04:59:32,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) Word has length 19 [2023-11-19 04:59:32,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:32,114 INFO L225 Difference]: With dead ends: 90 [2023-11-19 04:59:32,114 INFO L226 Difference]: Without dead ends: 69 [2023-11-19 04:59:32,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2023-11-19 04:59:32,116 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:32,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 52 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:59:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-19 04:59:32,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 27. [2023-11-19 04:59:32,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 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) [2023-11-19 04:59:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-11-19 04:59:32,131 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 19 [2023-11-19 04:59:32,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:32,131 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-11-19 04:59:32,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 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) [2023-11-19 04:59:32,132 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-11-19 04:59:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 04:59:32,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:32,133 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:32,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:32,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:32,341 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:32,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:32,342 INFO L85 PathProgramCache]: Analyzing trace with hash -644476674, now seen corresponding path program 2 times [2023-11-19 04:59:32,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:32,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916904595] [2023-11-19 04:59:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:32,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-19 04:59:32,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:32,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916904595] [2023-11-19 04:59:32,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916904595] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:32,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316524531] [2023-11-19 04:59:32,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:59:32,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:32,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:32,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:32,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:59:32,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 04:59:32,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:59:32,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 04:59:32,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:59:32,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:59:32,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316524531] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:32,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1398098605] [2023-11-19 04:59:32,750 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-19 04:59:32,750 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:59:32,750 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:59:32,751 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:59:32,751 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:59:33,480 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:59:34,092 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1441#(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 [2023-11-19 04:59:34,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:59:34,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:59:34,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-19 04:59:34,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361887495] [2023-11-19 04:59:34,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:34,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 04:59:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 04:59:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:59:34,095 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2023-11-19 04:59:34,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:34,981 INFO L93 Difference]: Finished difference Result 292 states and 346 transitions. [2023-11-19 04:59:34,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-19 04:59:34,982 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 [2023-11-19 04:59:34,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:34,987 INFO L225 Difference]: With dead ends: 292 [2023-11-19 04:59:34,987 INFO L226 Difference]: Without dead ends: 270 [2023-11-19 04:59:34,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=292, Invalid=1600, Unknown=0, NotChecked=0, Total=1892 [2023-11-19 04:59:34,990 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 530 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:34,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 105 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:59:34,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-19 04:59:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 42. [2023-11-19 04:59:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 41 states have internal predecessors, (51), 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) [2023-11-19 04:59:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2023-11-19 04:59:35,028 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 23 [2023-11-19 04:59:35,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:35,028 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2023-11-19 04:59:35,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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) [2023-11-19 04:59:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2023-11-19 04:59:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 04:59:35,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:35,030 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:35,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:35,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 04:59:35,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:35,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1635208712, now seen corresponding path program 1 times [2023-11-19 04:59:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:35,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256847069] [2023-11-19 04:59:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:59:35,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:35,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256847069] [2023-11-19 04:59:35,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256847069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:35,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717319531] [2023-11-19 04:59:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:35,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:35,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:35,529 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:35,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:59:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:35,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:59:35,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:59:35,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-19 04:59:35,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717319531] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:35,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [91873173] [2023-11-19 04:59:35,759 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 04:59:35,759 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:59:35,759 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:59:35,760 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:59:35,760 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:59:36,570 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:59:36,886 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2221#(and (= |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 [2023-11-19 04:59:36,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:59:36,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:59:36,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 04:59:36,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875936240] [2023-11-19 04:59:36,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:36,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 04:59:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:36,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 04:59:36,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-19 04:59:36,888 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 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) [2023-11-19 04:59:37,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:37,587 INFO L93 Difference]: Finished difference Result 228 states and 281 transitions. [2023-11-19 04:59:37,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:59:37,588 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 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 28 [2023-11-19 04:59:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:37,590 INFO L225 Difference]: With dead ends: 228 [2023-11-19 04:59:37,590 INFO L226 Difference]: Without dead ends: 192 [2023-11-19 04:59:37,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2023-11-19 04:59:37,592 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 240 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:37,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 157 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:59:37,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-19 04:59:37,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 48. [2023-11-19 04:59:37,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 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) [2023-11-19 04:59:37,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2023-11-19 04:59:37,620 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 28 [2023-11-19 04:59:37,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:37,620 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2023-11-19 04:59:37,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 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) [2023-11-19 04:59:37,620 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2023-11-19 04:59:37,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 04:59:37,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:37,622 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:37,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:37,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 04:59:37,843 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:37,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:37,844 INFO L85 PathProgramCache]: Analyzing trace with hash -333620792, now seen corresponding path program 2 times [2023-11-19 04:59:37,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:37,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733368370] [2023-11-19 04:59:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:37,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-19 04:59:38,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:38,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733368370] [2023-11-19 04:59:38,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733368370] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:38,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397564634] [2023-11-19 04:59:38,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:59:38,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:38,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:38,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:38,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:59:38,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 04:59:38,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:59:38,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:59:38,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-19 04:59:38,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:38,336 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-19 04:59:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397564634] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [794001031] [2023-11-19 04:59:38,339 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2023-11-19 04:59:38,339 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:59:38,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:59:38,340 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:59:38,340 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:59:39,099 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:59:39,365 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2907#(and (= |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 [2023-11-19 04:59:39,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:59:39,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:59:39,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-19 04:59:39,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879958995] [2023-11-19 04:59:39,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:39,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 04:59:39,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:39,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 04:59:39,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:59:39,368 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2023-11-19 04:59:39,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:39,533 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2023-11-19 04:59:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:59:39,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 34 [2023-11-19 04:59:39,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:39,535 INFO L225 Difference]: With dead ends: 76 [2023-11-19 04:59:39,535 INFO L226 Difference]: Without dead ends: 58 [2023-11-19 04:59:39,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-11-19 04:59:39,537 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:39,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:59:39,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-19 04:59:39,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-11-19 04:59:39,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 57 states have internal predecessors, (67), 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) [2023-11-19 04:59:39,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2023-11-19 04:59:39,588 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 34 [2023-11-19 04:59:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:39,588 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2023-11-19 04:59:39,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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) [2023-11-19 04:59:39,589 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2023-11-19 04:59:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-19 04:59:39,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:39,600 INFO L195 NwaCegarLoop]: trace histogram [10, 6, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:39,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:39,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:59:39,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:39,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:39,817 INFO L85 PathProgramCache]: Analyzing trace with hash -251445725, now seen corresponding path program 3 times [2023-11-19 04:59:39,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:39,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281048472] [2023-11-19 04:59:39,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:39,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-19 04:59:40,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:40,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281048472] [2023-11-19 04:59:40,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281048472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:40,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39394079] [2023-11-19 04:59:40,244 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 04:59:40,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:40,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:40,245 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:40,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:59:40,376 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 04:59:40,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:59:40,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 04:59:40,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 2 proven. 70 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:59:40,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-19 04:59:40,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39394079] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:40,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [136371148] [2023-11-19 04:59:40,694 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-19 04:59:40,694 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:59:40,695 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:59:40,695 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:59:40,695 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:59:41,299 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:59:41,969 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3397#(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 [2023-11-19 04:59:41,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:59:41,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:59:41,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 9] total 24 [2023-11-19 04:59:41,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115882591] [2023-11-19 04:59:41,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:41,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-19 04:59:41,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:41,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 04:59:41,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=920, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 04:59:41,972 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 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) [2023-11-19 04:59:45,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:45,271 INFO L93 Difference]: Finished difference Result 275 states and 358 transitions. [2023-11-19 04:59:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-11-19 04:59:45,272 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 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 38 [2023-11-19 04:59:45,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:45,274 INFO L225 Difference]: With dead ends: 275 [2023-11-19 04:59:45,274 INFO L226 Difference]: Without dead ends: 251 [2023-11-19 04:59:45,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3169 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1149, Invalid=9771, Unknown=0, NotChecked=0, Total=10920 [2023-11-19 04:59:45,280 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 217 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 2226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:45,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 473 Invalid, 2226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 04:59:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-19 04:59:45,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 66. [2023-11-19 04:59:45,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 65 states have internal predecessors, (75), 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) [2023-11-19 04:59:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2023-11-19 04:59:45,323 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 38 [2023-11-19 04:59:45,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:45,323 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2023-11-19 04:59:45,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 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) [2023-11-19 04:59:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2023-11-19 04:59:45,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 04:59:45,325 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:45,325 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:45,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:45,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 04:59:45,555 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:45,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:45,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1465912029, now seen corresponding path program 4 times [2023-11-19 04:59:45,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:45,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519258748] [2023-11-19 04:59:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:45,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 04:59:46,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:59:46,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519258748] [2023-11-19 04:59:46,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519258748] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:59:46,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430257920] [2023-11-19 04:59:46,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 04:59:46,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:59:46,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:46,217 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:59:46,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:59:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:59:46,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 04:59:46,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:59:46,678 INFO L378 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 [2023-11-19 04:59:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-19 04:59:46,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:59:47,042 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-19 04:59:47,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 31 [2023-11-19 04:59:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-19 04:59:47,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430257920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:59:47,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1238934100] [2023-11-19 04:59:47,100 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2023-11-19 04:59:47,100 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:59:47,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:59:47,101 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:59:47,101 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:59:47,764 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:59:48,420 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4437#(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 [2023-11-19 04:59:48,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:59:48,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 04:59:48,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9] total 25 [2023-11-19 04:59:48,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732455649] [2023-11-19 04:59:48,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 04:59:48,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 04:59:48,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:59:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 04:59:48,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1013, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 04:59:48,422 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 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) [2023-11-19 04:59:50,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:59:50,204 INFO L93 Difference]: Finished difference Result 517 states and 581 transitions. [2023-11-19 04:59:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-19 04:59:50,205 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 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 42 [2023-11-19 04:59:50,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:59:50,208 INFO L225 Difference]: With dead ends: 517 [2023-11-19 04:59:50,208 INFO L226 Difference]: Without dead ends: 498 [2023-11-19 04:59:50,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=370, Invalid=2936, Unknown=0, NotChecked=0, Total=3306 [2023-11-19 04:59:50,211 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 531 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:59:50,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 378 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:59:50,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-11-19 04:59:50,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 93. [2023-11-19 04:59:50,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 92 states have internal predecessors, (106), 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) [2023-11-19 04:59:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2023-11-19 04:59:50,277 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 42 [2023-11-19 04:59:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:59:50,277 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2023-11-19 04:59:50,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.32) internal successors, (58), 25 states have internal predecessors, (58), 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) [2023-11-19 04:59:50,278 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2023-11-19 04:59:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-19 04:59:50,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:59:50,279 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:50,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:59:50,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 04:59:50,492 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:59:50,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:59:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1264749720, now seen corresponding path program 3 times [2023-11-19 04:59:50,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:59:50,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337584561] [2023-11-19 04:59:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:59:50,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:59:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:59:51,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:59:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:59:52,120 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:59:52,120 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:59:52,121 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:59:52,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 04:59:52,127 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1] [2023-11-19 04:59:52,131 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:59:52,180 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-19 04:59:52,182 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-19 04:59:52,183 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,191 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,192 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,192 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,193 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,194 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,195 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,196 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,198 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,199 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,200 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-19 04:59:52,201 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,204 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,204 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,205 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,205 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,206 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,206 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,207 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,207 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,208 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,208 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,208 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,212 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,214 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,214 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,215 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,215 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,217 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,217 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,217 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,218 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,219 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,219 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,220 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,220 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-19 04:59:52,221 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:59:52 BoogieIcfgContainer [2023-11-19 04:59:52,246 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:59:52,247 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:59:52,247 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:59:52,247 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:59:52,248 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:59:23" (3/4) ... [2023-11-19 04:59:52,249 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 04:59:52,269 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-19 04:59:52,276 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem3 could not be translated [2023-11-19 04:59:52,278 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,279 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,279 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,279 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,280 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,281 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,281 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,281 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,281 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,282 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,282 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,282 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-19 04:59:52,282 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,283 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,283 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,284 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,284 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,284 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,284 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,285 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,285 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,285 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,286 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,286 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,286 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,286 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,286 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,287 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,287 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,288 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,288 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,289 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,289 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,289 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,289 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,289 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post14 could not be translated [2023-11-19 04:59:52,290 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post9 could not be translated [2023-11-19 04:59:52,290 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-19 04:59:52,354 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93eef0e1-ae05-4f60-843c-f7a8607aedc1/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:59:52,355 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:59:52,355 INFO L158 Benchmark]: Toolchain (without parser) took 29422.65ms. Allocated memory was 134.2MB in the beginning and 346.0MB in the end (delta: 211.8MB). Free memory was 89.4MB in the beginning and 157.3MB in the end (delta: -68.0MB). Peak memory consumption was 145.2MB. Max. memory is 16.1GB. [2023-11-19 04:59:52,356 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:59:52,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.20ms. Allocated memory is still 134.2MB. Free memory was 88.9MB in the beginning and 77.7MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 04:59:52,357 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.74ms. Allocated memory is still 134.2MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:59:52,358 INFO L158 Benchmark]: Boogie Preprocessor took 34.94ms. Allocated memory is still 134.2MB. Free memory was 75.6MB in the beginning and 74.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:59:52,358 INFO L158 Benchmark]: RCFGBuilder took 617.57ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 74.3MB in the beginning and 135.2MB in the end (delta: -60.9MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2023-11-19 04:59:52,359 INFO L158 Benchmark]: TraceAbstraction took 28255.89ms. Allocated memory was 165.7MB in the beginning and 346.0MB in the end (delta: 180.4MB). Free memory was 134.5MB in the beginning and 163.6MB in the end (delta: -29.2MB). Peak memory consumption was 150.6MB. Max. memory is 16.1GB. [2023-11-19 04:59:52,360 INFO L158 Benchmark]: Witness Printer took 107.83ms. Allocated memory is still 346.0MB. Free memory was 163.6MB in the beginning and 157.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 04:59:52,365 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 is still 82.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.20ms. Allocated memory is still 134.2MB. Free memory was 88.9MB in the beginning and 77.7MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.74ms. Allocated memory is still 134.2MB. Free memory was 77.7MB in the beginning and 75.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.94ms. Allocated memory is still 134.2MB. Free memory was 75.6MB in the beginning and 74.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 617.57ms. Allocated memory was 134.2MB in the beginning and 165.7MB in the end (delta: 31.5MB). Free memory was 74.3MB in the beginning and 135.2MB in the end (delta: -60.9MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * TraceAbstraction took 28255.89ms. Allocated memory was 165.7MB in the beginning and 346.0MB in the end (delta: 180.4MB). Free memory was 134.5MB in the beginning and 163.6MB in the end (delta: -29.2MB). Peak memory consumption was 150.6MB. Max. memory is 16.1GB. * Witness Printer took 107.83ms. Allocated memory is still 346.0MB. Free memory was 163.6MB in the beginning and 157.3MB in the end (delta: 6.3MB). 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~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~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~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~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~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~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~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