./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan --witnessprinter.witness.filename witness.graphml --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 a3b319f31812cf6dfaa3cae4a89a0875c72839a3 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:03,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:03,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:03,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:03,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:03,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:03,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:03,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:03,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:03,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:03,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:03,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:03,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:03,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:03,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:03,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:03,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:03,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:03,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:03,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:03,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:03,338 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:03,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:03,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:03,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:03,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:03,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:03,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:03,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:03,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:03,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:03,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:03,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:03,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:03,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:03,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:03,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:03,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:03,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:03,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:03,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:03,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:03,380 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:03,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:03,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:03,381 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:03,381 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:03,381 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:03,382 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:03,382 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:03,382 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:03,382 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:03,382 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:03,382 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:03,383 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:03,383 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:03,383 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:03,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:03,384 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:03,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:03,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:03,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:03,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:03,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:03,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:03,385 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:03,386 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:03,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:03,386 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:03,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:03,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:03,387 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:03,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:03,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:03,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:03,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:03,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:03,388 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:03,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:03,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:03,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:03,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:03,389 INFO L138 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-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3b319f31812cf6dfaa3cae4a89a0875c72839a3 [2020-11-22 13:06:03,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:03,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:03,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:03,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:03,721 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:03,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test22-1.c [2020-11-22 13:06:03,812 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/data/6b5331d10/09079f3b5bc74c0ea8ee611839bfdb67/FLAG674233013 [2020-11-22 13:06:04,357 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:04,363 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/sv-benchmarks/c/ldv-regression/test22-1.c [2020-11-22 13:06:04,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/data/6b5331d10/09079f3b5bc74c0ea8ee611839bfdb67/FLAG674233013 [2020-11-22 13:06:04,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/data/6b5331d10/09079f3b5bc74c0ea8ee611839bfdb67 [2020-11-22 13:06:04,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:04,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:04,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:04,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:04,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:04,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:04" (1/1) ... [2020-11-22 13:06:04,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c596057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:04, skipping insertion in model container [2020-11-22 13:06:04,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:04" (1/1) ... [2020-11-22 13:06:04,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:04,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:04,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:05,002 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:05,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:05,035 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:05,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05 WrapperNode [2020-11-22 13:06:05,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:05,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:05,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:05,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:05,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:05,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:05,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:05,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:05,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... [2020-11-22 13:06:05,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:05,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:05,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:05,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:05,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:06:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:05,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:06:05,989 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:05,989 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-22 13:06:05,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:05 BoogieIcfgContainer [2020-11-22 13:06:05,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:05,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:05,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:06,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:06,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:04" (1/3) ... [2020-11-22 13:06:06,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9626c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:06, skipping insertion in model container [2020-11-22 13:06:06,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:05" (2/3) ... [2020-11-22 13:06:06,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a9626c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:06, skipping insertion in model container [2020-11-22 13:06:06,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:05" (3/3) ... [2020-11-22 13:06:06,003 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-1.c [2020-11-22 13:06:06,014 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:06,018 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:06:06,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:06:06,066 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:06,066 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:06,067 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:06,067 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:06,067 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:06,067 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:06,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:06,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 13:06:06,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:06:06,087 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:06,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:06:06,088 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:06,094 INFO L82 PathProgramCache]: Analyzing trace with hash -735014897, now seen corresponding path program 1 times [2020-11-22 13:06:06,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:06,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585665557] [2020-11-22 13:06:06,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:06,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585665557] [2020-11-22 13:06:06,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:06,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:06,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287321086] [2020-11-22 13:06:06,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:06,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:06,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:06,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:06,359 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2020-11-22 13:06:06,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:06,388 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2020-11-22 13:06:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:06,390 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-22 13:06:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:06,409 INFO L225 Difference]: With dead ends: 18 [2020-11-22 13:06:06,409 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 13:06:06,412 INFO L677 BasicCegarLoop]: 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 [2020-11-22 13:06:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 13:06:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 13:06:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:06:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:06:06,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-22 13:06:06,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:06,461 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:06:06,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:06:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:06:06,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:06,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:06,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:06,463 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:06,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:06,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1317965626, now seen corresponding path program 1 times [2020-11-22 13:06:06,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:06,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373518645] [2020-11-22 13:06:06,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:06,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:06,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373518645] [2020-11-22 13:06:06,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:06,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:06,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40337219] [2020-11-22 13:06:06,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:06,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:06,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:06,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:06,648 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-22 13:06:06,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:06,731 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2020-11-22 13:06:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:06,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-22 13:06:06,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:06,733 INFO L225 Difference]: With dead ends: 14 [2020-11-22 13:06:06,733 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 13:06:06,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:06,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 13:06:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-22 13:06:06,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 13:06:06,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-22 13:06:06,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2020-11-22 13:06:06,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:06,738 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-22 13:06:06,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:06,739 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-22 13:06:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:06:06,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:06,739 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:06,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:06,740 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:06,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:06,740 INFO L82 PathProgramCache]: Analyzing trace with hash 476852609, now seen corresponding path program 1 times [2020-11-22 13:06:06,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:06,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132662733] [2020-11-22 13:06:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:06,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132662733] [2020-11-22 13:06:06,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659637630] [2020-11-22 13:06:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:06,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-22 13:06:06,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:07,017 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:06:07,028 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:06:07,069 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:07,070 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:07,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:07,080 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:07,088 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:07,088 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:07,095 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:07,096 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:07,103 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:07,104 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:07,109 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:07,109 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:07,113 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:07,114 INFO L545 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:07,262 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-11-22 13:06:07,263 INFO L625 ElimStorePlain]: treesize reduction 59, result has 52.8 percent of original size [2020-11-22 13:06:07,264 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2020-11-22 13:06:07,264 INFO L244 ElimStorePlain]: Needed 8 recursive calls to eliminate 1 variables, input treesize:298, output treesize:66 [2020-11-22 13:06:07,416 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2020-11-22 13:06:07,421 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:07,430 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:07,432 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:07,433 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:9 [2020-11-22 13:06:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:07,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:07,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1630461001] [2020-11-22 13:06:07,553 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-22 13:06:07,554 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:06:07,558 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:06:07,564 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:06:07,564 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:06:07,931 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:07,979 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,221 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,280 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,320 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,367 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,407 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,442 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,487 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,801 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,839 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,884 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,916 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,949 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:08,996 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,212 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,244 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,274 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,522 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,561 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,716 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,760 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,786 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,813 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:09,841 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,155 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,189 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,541 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,561 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,696 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,727 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,763 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,798 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,822 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,858 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,881 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,919 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,955 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:10,989 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:11,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:11,450 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-11-22 13:06:14,204 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-22 13:06:16,424 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-11-22 13:06:16,770 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:06:17,200 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-11-22 13:06:17,378 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-22 13:06:17,582 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2020-11-22 13:06:17,940 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-11-22 13:06:17,942 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:06:17,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:06:17,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2020-11-22 13:06:17,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139571552] [2020-11-22 13:06:17,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-22 13:06:17,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:17,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-22 13:06:17,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-11-22 13:06:17,945 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 15 states. [2020-11-22 13:06:18,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:18,368 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-11-22 13:06:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-22 13:06:18,369 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 9 [2020-11-22 13:06:18,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:18,370 INFO L225 Difference]: With dead ends: 20 [2020-11-22 13:06:18,370 INFO L226 Difference]: Without dead ends: 16 [2020-11-22 13:06:18,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2020-11-22 13:06:18,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-22 13:06:18,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-22 13:06:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-22 13:06:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-22 13:06:18,374 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-11-22 13:06:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:18,375 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-22 13:06:18,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-22 13:06:18,375 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-22 13:06:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:06:18,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:18,375 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:18,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 13:06:18,580 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:18,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:18,580 INFO L82 PathProgramCache]: Analyzing trace with hash -977820878, now seen corresponding path program 2 times [2020-11-22 13:06:18,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:18,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611002170] [2020-11-22 13:06:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:18,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611002170] [2020-11-22 13:06:18,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877145672] [2020-11-22 13:06:18,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:18,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-22 13:06:18,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-22 13:06:18,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-22 13:06:18,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:19,987 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 71 [2020-11-22 13:06:20,506 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-11-22 13:06:20,657 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-11-22 13:06:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 13:06:20,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-22 13:06:21,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1657521704] [2020-11-22 13:06:21,120 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-11-22 13:06:21,120 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:06:21,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:06:21,121 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:06:21,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:06:21,327 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:21,367 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:21,403 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:21,438 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:21,695 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:21,745 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:21,796 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:21,845 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,132 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,165 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,204 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,390 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,432 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,489 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,532 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,726 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,755 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:22,960 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,011 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,049 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,397 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,427 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,467 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,656 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,718 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,780 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,814 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,977 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:23,998 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,015 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,056 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,090 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,107 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,128 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,260 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,282 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,334 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,360 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,382 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,405 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,528 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-22 13:06:24,718 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-11-22 13:06:27,378 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-11-22 13:06:28,990 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-11-22 13:06:29,213 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:06:29,675 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-11-22 13:06:29,854 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-22 13:06:30,339 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2020-11-22 13:06:30,340 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:06:30,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:06:30,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2020-11-22 13:06:30,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092598913] [2020-11-22 13:06:30,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-22 13:06:30,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:30,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-22 13:06:30,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2020-11-22 13:06:30,342 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 23 states. [2020-11-22 13:06:31,100 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-11-22 13:06:31,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:31,529 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-11-22 13:06:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-22 13:06:31,530 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 15 [2020-11-22 13:06:31,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:31,530 INFO L225 Difference]: With dead ends: 20 [2020-11-22 13:06:31,530 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:06:31,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=325, Invalid=1315, Unknown=0, NotChecked=0, Total=1640 [2020-11-22 13:06:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:06:31,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:06:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:06:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:06:31,531 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-22 13:06:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:31,532 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:06:31,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-22 13:06:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:06:31,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:06:31,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-22 13:06:31,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:06:31,886 INFO L270 CegarLoopResult]: At program point L44(lines 33 52) the Hoare annotation is: false [2020-11-22 13:06:31,886 INFO L274 CegarLoopResult]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2020-11-22 13:06:31,886 INFO L270 CegarLoopResult]: At program point L40-3(lines 40 42) the Hoare annotation is: (and (= ULTIMATE.start_main_~pd2~0.base ULTIMATE.start_main_~pa~0.base) (not (= ULTIMATE.start_main_~pd2~0.base 0)) (= ULTIMATE.start_main_~pd2~0.offset 0) (or (not |ULTIMATE.start_main_#t~short19|) (and (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base) (= ULTIMATE.start_main_~pd2~0.offset ULTIMATE.start_main_~pd1~0.offset))) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (= ULTIMATE.start_main_~pa~0.offset ULTIMATE.start_main_~pd2~0.offset) (< 0 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) ULTIMATE.start_main_~pd2~0.offset))) [2020-11-22 13:06:31,887 INFO L270 CegarLoopResult]: At program point L40-4(lines 40 42) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| ULTIMATE.start_main_~pd2~0.base) ULTIMATE.start_main_~pd2~0.offset))) (and (<= .cse0 ULTIMATE.start_main_~i~0) (= ULTIMATE.start_main_~pd2~0.base ULTIMATE.start_main_~pa~0.base) (not (= ULTIMATE.start_main_~pd2~0.base 0)) (= ULTIMATE.start_main_~pd2~0.offset 0) (or (not |ULTIMATE.start_main_#t~short19|) (and (= ULTIMATE.start_main_~pd1~0.base ULTIMATE.start_main_~pd2~0.base) (= ULTIMATE.start_main_~pd2~0.offset ULTIMATE.start_main_~pd1~0.offset))) (< ULTIMATE.start_main_~i~0 (+ (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset) 1)) (= ULTIMATE.start_main_~pa~0.offset ULTIMATE.start_main_~pd2~0.offset) (< 0 .cse0))) [2020-11-22 13:06:31,887 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-22 13:06:31,887 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-22 13:06:31,887 INFO L274 CegarLoopResult]: For program point L37-2(lines 37 46) no Hoare annotation was computed. [2020-11-22 13:06:31,887 INFO L274 CegarLoopResult]: For program point L37-4(lines 37 46) no Hoare annotation was computed. [2020-11-22 13:06:31,887 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:06:31,887 INFO L277 CegarLoopResult]: At program point L51(lines 32 52) the Hoare annotation is: true [2020-11-22 13:06:31,887 INFO L274 CegarLoopResult]: For program point L43(lines 43 45) no Hoare annotation was computed. [2020-11-22 13:06:31,896 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,897 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,903 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,903 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,908 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,911 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,911 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,914 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:31,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:31 BoogieIcfgContainer [2020-11-22 13:06:31,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:31,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:31,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:31,918 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:31,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:05" (3/4) ... [2020-11-22 13:06:31,925 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:06:31,938 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-22 13:06:31,938 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 13:06:31,939 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:06:31,939 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:06:31,989 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5ee6eac9-c495-4313-a6d2-0502e8941ad8/bin/utaipan/witness.graphml [2020-11-22 13:06:31,989 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:31,993 INFO L168 Benchmark]: Toolchain (without parser) took 27269.98 ms. Allocated memory was 113.2 MB in the beginning and 293.6 MB in the end (delta: 180.4 MB). Free memory was 84.3 MB in the beginning and 129.9 MB in the end (delta: -45.6 MB). Peak memory consumption was 134.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:31,994 INFO L168 Benchmark]: CDTParser took 1.02 ms. Allocated memory is still 83.9 MB. Free memory was 41.1 MB in the beginning and 41.1 MB in the end (delta: 47.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:31,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.21 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 90.5 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:31,995 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.84 ms. Allocated memory is still 113.2 MB. Free memory was 90.5 MB in the beginning and 88.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:31,995 INFO L168 Benchmark]: Boogie Preprocessor took 56.96 ms. Allocated memory is still 113.2 MB. Free memory was 88.4 MB in the beginning and 87.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:31,995 INFO L168 Benchmark]: RCFGBuilder took 856.16 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 46.5 MB in the end (delta: 40.6 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:31,996 INFO L168 Benchmark]: TraceAbstraction took 25921.00 ms. Allocated memory was 113.2 MB in the beginning and 293.6 MB in the end (delta: 180.4 MB). Free memory was 46.5 MB in the beginning and 133.0 MB in the end (delta: -86.6 MB). Peak memory consumption was 95.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:31,996 INFO L168 Benchmark]: Witness Printer took 75.05 ms. Allocated memory is still 293.6 MB. Free memory was 133.0 MB in the beginning and 129.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:31,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.02 ms. Allocated memory is still 83.9 MB. Free memory was 41.1 MB in the beginning and 41.1 MB in the end (delta: 47.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.21 ms. Allocated memory is still 113.2 MB. Free memory was 84.3 MB in the beginning and 90.5 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.84 ms. Allocated memory is still 113.2 MB. Free memory was 90.5 MB in the beginning and 88.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.96 ms. Allocated memory is still 113.2 MB. Free memory was 88.4 MB in the beginning and 87.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 856.16 ms. Allocated memory is still 113.2 MB. Free memory was 87.1 MB in the beginning and 46.5 MB in the end (delta: 40.6 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25921.00 ms. Allocated memory was 113.2 MB in the beginning and 293.6 MB in the end (delta: 180.4 MB). Free memory was 46.5 MB in the beginning and 133.0 MB in the end (delta: -86.6 MB). Peak memory consumption was 95.3 MB. Max. memory is 16.1 GB. * Witness Printer took 75.05 ms. Allocated memory is still 293.6 MB. Free memory was 133.0 MB in the beginning and 129.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant [2020-11-22 13:06:32,007 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:32,008 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:32,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:32,012 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((pd2 == pa && !(pd2 == 0)) && pd2 == 0) && (!aux-pd1 != 0 && pd1 == pd2 && (*pd2).a > 0-aux || (pd1 == pd2 && pd2 == pd1))) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pa == pd2) && 0 < unknown-#memory_int-unknown[pd2][pd2] - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant [2020-11-22 13:06:32,023 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:32,023 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:32,024 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:32,024 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:32,025 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-22 13:06:32,026 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((unknown-#memory_int-unknown[pd2][pd2] <= i && pd2 == pa) && !(pd2 == 0)) && pd2 == 0) && (!aux-pd1 != 0 && pd1 == pd2 && (*pd2).a > 0-aux || (pd1 == pd2 && pd2 == pd1))) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pa == pd2) && 0 < unknown-#memory_int-unknown[pd2][pd2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.6s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 56 SDslu, 19 SDs, 0 SdLazy, 125 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 90 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 254 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 61 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 11873 SizeOfPredicates, 37 NumberOfNonLiveVariables, 219 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 25/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...