./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.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_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/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 9fd1c199175ae89d653ba6bc804fff94514799a0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:01:20,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:01:20,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:01:21,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:01:21,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:01:21,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:01:21,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:01:21,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:01:21,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:01:21,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:01:21,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:01:21,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:01:21,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:01:21,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:01:21,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:01:21,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:01:21,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:01:21,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:01:21,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:01:21,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:01:21,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:01:21,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:01:21,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:01:21,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:01:21,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:01:21,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:01:21,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:01:21,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:01:21,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:01:21,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:01:21,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:01:21,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:01:21,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:01:21,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:01:21,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:01:21,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:01:21,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:01:21,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:01:21,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:01:21,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:01:21,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:01:21,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:01:21,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:01:21,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:01:21,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:01:21,164 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:01:21,164 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:01:21,165 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:01:21,165 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:01:21,165 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:01:21,165 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:01:21,166 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:01:21,167 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:01:21,167 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:01:21,167 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:01:21,168 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:01:21,168 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:01:21,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:01:21,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:01:21,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:01:21,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:01:21,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:01:21,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:01:21,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:01:21,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:01:21,171 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:01:21,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:01:21,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:01:21,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:01:21,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:01:21,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:01:21,174 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:01:21,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:01:21,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:01:21,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:01:21,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:01:21,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:01:21,176 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:01:21,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:01:21,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:01:21,177 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:01:21,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:01:21,177 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_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd1c199175ae89d653ba6bc804fff94514799a0 [2020-11-30 02:01:21,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:01:21,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:01:21,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:01:21,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:01:21,484 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:01:21,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2020-11-30 02:01:21,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/data/6d6340695/3df9deb6dfb44c3da8a7aa82f2452306/FLAGf48869060 [2020-11-30 02:01:22,215 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:01:22,216 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/sv-benchmarks/c/eca-rers2012/Problem02_label15.c [2020-11-30 02:01:22,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/data/6d6340695/3df9deb6dfb44c3da8a7aa82f2452306/FLAGf48869060 [2020-11-30 02:01:22,513 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/data/6d6340695/3df9deb6dfb44c3da8a7aa82f2452306 [2020-11-30 02:01:22,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:01:22,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:01:22,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:01:22,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:01:22,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:01:22,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:01:22" (1/1) ... [2020-11-30 02:01:22,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e33cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:22, skipping insertion in model container [2020-11-30 02:01:22,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:01:22" (1/1) ... [2020-11-30 02:01:22,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:01:22,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:01:23,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:01:23,101 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:01:23,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:01:23,294 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:01:23,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23 WrapperNode [2020-11-30 02:01:23,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:01:23,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:01:23,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:01:23,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:01:23,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... [2020-11-30 02:01:23,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... [2020-11-30 02:01:23,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:01:23,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:01:23,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:01:23,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:01:23,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... [2020-11-30 02:01:23,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... [2020-11-30 02:01:23,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... [2020-11-30 02:01:23,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... [2020-11-30 02:01:23,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... [2020-11-30 02:01:23,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... [2020-11-30 02:01:23,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... [2020-11-30 02:01:23,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:01:23,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:01:23,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:01:23,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:01:23,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/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 [2020-11-30 02:01:23,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:01:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:01:23,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:01:23,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:01:26,144 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:01:26,145 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:01:26,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:01:26 BoogieIcfgContainer [2020-11-30 02:01:26,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:01:26,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:01:26,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:01:26,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:01:26,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:01:22" (1/3) ... [2020-11-30 02:01:26,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f66e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:01:26, skipping insertion in model container [2020-11-30 02:01:26,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:01:23" (2/3) ... [2020-11-30 02:01:26,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f66e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:01:26, skipping insertion in model container [2020-11-30 02:01:26,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:01:26" (3/3) ... [2020-11-30 02:01:26,160 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label15.c [2020-11-30 02:01:26,171 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:01:26,176 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:01:26,187 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:01:26,222 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:01:26,222 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:01:26,223 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:01:26,223 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:01:26,223 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:01:26,223 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:01:26,223 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:01:26,224 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:01:26,243 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-30 02:01:26,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-30 02:01:26,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:01:26,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:01:26,254 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:01:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:01:26,261 INFO L82 PathProgramCache]: Analyzing trace with hash -216538608, now seen corresponding path program 1 times [2020-11-30 02:01:26,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:01:26,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781883357] [2020-11-30 02:01:26,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:01:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:01:26,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781883357] [2020-11-30 02:01:26,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:01:26,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:01:26,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575834849] [2020-11-30 02:01:26,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:01:26,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:01:26,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:01:26,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:01:26,690 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-30 02:01:27,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:01:27,306 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-30 02:01:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:01:27,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-30 02:01:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:01:27,325 INFO L225 Difference]: With dead ends: 251 [2020-11-30 02:01:27,328 INFO L226 Difference]: Without dead ends: 163 [2020-11-30 02:01:27,332 INFO L677 BasicCegarLoop]: 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 [2020-11-30 02:01:27,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-30 02:01:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-30 02:01:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-30 02:01:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-11-30 02:01:27,383 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-11-30 02:01:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:01:27,384 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-11-30 02:01:27,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:01:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-11-30 02:01:27,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-30 02:01:27,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:01:27,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:01:27,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:01:27,389 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:01:27,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:01:27,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1992948797, now seen corresponding path program 1 times [2020-11-30 02:01:27,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:01:27,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499055349] [2020-11-30 02:01:27,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:01:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:27,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:01:27,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499055349] [2020-11-30 02:01:27,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:01:27,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:01:27,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366139830] [2020-11-30 02:01:27,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:01:27,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:01:27,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:01:27,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:01:27,487 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-11-30 02:01:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:01:27,980 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-11-30 02:01:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:01:27,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-30 02:01:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:01:27,984 INFO L225 Difference]: With dead ends: 485 [2020-11-30 02:01:27,984 INFO L226 Difference]: Without dead ends: 323 [2020-11-30 02:01:27,986 INFO L677 BasicCegarLoop]: 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 [2020-11-30 02:01:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-30 02:01:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-30 02:01:28,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-30 02:01:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-11-30 02:01:28,035 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-11-30 02:01:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:01:28,036 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-11-30 02:01:28,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:01:28,037 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-11-30 02:01:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-30 02:01:28,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:01:28,050 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:01:28,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:01:28,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:01:28,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:01:28,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1654432482, now seen corresponding path program 1 times [2020-11-30 02:01:28,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:01:28,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425356444] [2020-11-30 02:01:28,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:01:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:28,125 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:01:28,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425356444] [2020-11-30 02:01:28,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98019132] [2020-11-30 02:01:28,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/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 [2020-11-30 02:01:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:28,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:01:28,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:01:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 02:01:28,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:01:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 02:01:28,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:01:28,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-11-30 02:01:28,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382302954] [2020-11-30 02:01:28,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:01:28,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:01:28,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:01:28,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:01:28,501 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-11-30 02:01:29,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:01:29,105 INFO L93 Difference]: Finished difference Result 565 states and 880 transitions. [2020-11-30 02:01:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:01:29,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-30 02:01:29,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:01:29,110 INFO L225 Difference]: With dead ends: 565 [2020-11-30 02:01:29,110 INFO L226 Difference]: Without dead ends: 563 [2020-11-30 02:01:29,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:01:29,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-30 02:01:29,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2020-11-30 02:01:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-30 02:01:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 643 transitions. [2020-11-30 02:01:29,140 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 643 transitions. Word has length 89 [2020-11-30 02:01:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:01:29,140 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 643 transitions. [2020-11-30 02:01:29,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:01:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 643 transitions. [2020-11-30 02:01:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-30 02:01:29,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:01:29,158 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:01:29,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 02:01:29,380 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:01:29,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:01:29,381 INFO L82 PathProgramCache]: Analyzing trace with hash -215850534, now seen corresponding path program 1 times [2020-11-30 02:01:29,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:01:29,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844722431] [2020-11-30 02:01:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:01:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:01:29,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844722431] [2020-11-30 02:01:29,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:01:29,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:01:29,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781478080] [2020-11-30 02:01:29,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:01:29,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:01:29,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:01:29,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:01:29,467 INFO L87 Difference]: Start difference. First operand 403 states and 643 transitions. Second operand 3 states. [2020-11-30 02:01:29,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:01:29,686 INFO L93 Difference]: Finished difference Result 805 states and 1285 transitions. [2020-11-30 02:01:29,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:01:29,686 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-30 02:01:29,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:01:29,689 INFO L225 Difference]: With dead ends: 805 [2020-11-30 02:01:29,689 INFO L226 Difference]: Without dead ends: 403 [2020-11-30 02:01:29,691 INFO L677 BasicCegarLoop]: 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 [2020-11-30 02:01:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-30 02:01:29,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-11-30 02:01:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-11-30 02:01:29,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 588 transitions. [2020-11-30 02:01:29,713 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 588 transitions. Word has length 91 [2020-11-30 02:01:29,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:01:29,713 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 588 transitions. [2020-11-30 02:01:29,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:01:29,713 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 588 transitions. [2020-11-30 02:01:29,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-30 02:01:29,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:01:29,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:01:29,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:01:29,717 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:01:29,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:01:29,718 INFO L82 PathProgramCache]: Analyzing trace with hash 441529884, now seen corresponding path program 1 times [2020-11-30 02:01:29,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:01:29,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041381314] [2020-11-30 02:01:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:01:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-30 02:01:29,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041381314] [2020-11-30 02:01:29,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:01:29,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:01:29,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61086599] [2020-11-30 02:01:29,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:01:29,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:01:29,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:01:29,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:01:29,818 INFO L87 Difference]: Start difference. First operand 403 states and 588 transitions. Second operand 3 states. [2020-11-30 02:01:30,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:01:30,229 INFO L93 Difference]: Finished difference Result 885 states and 1350 transitions. [2020-11-30 02:01:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:01:30,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-30 02:01:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:01:30,233 INFO L225 Difference]: With dead ends: 885 [2020-11-30 02:01:30,233 INFO L226 Difference]: Without dead ends: 563 [2020-11-30 02:01:30,234 INFO L677 BasicCegarLoop]: 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 [2020-11-30 02:01:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-30 02:01:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2020-11-30 02:01:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2020-11-30 02:01:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 798 transitions. [2020-11-30 02:01:30,259 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 798 transitions. Word has length 111 [2020-11-30 02:01:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:01:30,259 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 798 transitions. [2020-11-30 02:01:30,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:01:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 798 transitions. [2020-11-30 02:01:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-11-30 02:01:30,268 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:01:30,269 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:01:30,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:01:30,269 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:01:30,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:01:30,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1831506860, now seen corresponding path program 1 times [2020-11-30 02:01:30,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:01:30,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942371537] [2020-11-30 02:01:30,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:01:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-11-30 02:01:30,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942371537] [2020-11-30 02:01:30,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457273256] [2020-11-30 02:01:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/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 [2020-11-30 02:01:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:30,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:01:30,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:01:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 02:01:30,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:01:30,588 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-30 02:01:30,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:01:30,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-30 02:01:30,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861027623] [2020-11-30 02:01:30,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:01:30,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:01:30,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:01:30,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:01:30,591 INFO L87 Difference]: Start difference. First operand 563 states and 798 transitions. Second operand 3 states. [2020-11-30 02:01:30,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:01:30,976 INFO L93 Difference]: Finished difference Result 1365 states and 1995 transitions. [2020-11-30 02:01:30,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:01:30,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-11-30 02:01:30,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:01:30,982 INFO L225 Difference]: With dead ends: 1365 [2020-11-30 02:01:30,982 INFO L226 Difference]: Without dead ends: 883 [2020-11-30 02:01:30,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:01:30,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-11-30 02:01:31,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-11-30 02:01:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-11-30 02:01:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1183 transitions. [2020-11-30 02:01:31,038 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1183 transitions. Word has length 133 [2020-11-30 02:01:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:01:31,038 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1183 transitions. [2020-11-30 02:01:31,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:01:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1183 transitions. [2020-11-30 02:01:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-11-30 02:01:31,042 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:01:31,043 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:01:31,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:01:31,256 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:01:31,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:01:31,257 INFO L82 PathProgramCache]: Analyzing trace with hash -834465784, now seen corresponding path program 1 times [2020-11-30 02:01:31,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:01:31,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197059805] [2020-11-30 02:01:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:01:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-30 02:01:31,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197059805] [2020-11-30 02:01:31,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:01:31,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:01:31,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242776438] [2020-11-30 02:01:31,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:01:31,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:01:31,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:01:31,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:01:31,382 INFO L87 Difference]: Start difference. First operand 883 states and 1183 transitions. Second operand 5 states. [2020-11-30 02:01:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:01:32,092 INFO L93 Difference]: Finished difference Result 1961 states and 2591 transitions. [2020-11-30 02:01:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:01:32,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-11-30 02:01:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:01:32,099 INFO L225 Difference]: With dead ends: 1961 [2020-11-30 02:01:32,099 INFO L226 Difference]: Without dead ends: 993 [2020-11-30 02:01:32,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:01:32,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-11-30 02:01:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 883. [2020-11-30 02:01:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-11-30 02:01:32,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1099 transitions. [2020-11-30 02:01:32,130 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1099 transitions. Word has length 135 [2020-11-30 02:01:32,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:01:32,131 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1099 transitions. [2020-11-30 02:01:32,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:01:32,131 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1099 transitions. [2020-11-30 02:01:32,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-11-30 02:01:32,134 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:01:32,134 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:01:32,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:01:32,135 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:01:32,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:01:32,135 INFO L82 PathProgramCache]: Analyzing trace with hash -788633390, now seen corresponding path program 1 times [2020-11-30 02:01:32,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:01:32,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456394957] [2020-11-30 02:01:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:01:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-30 02:01:32,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456394957] [2020-11-30 02:01:32,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216680106] [2020-11-30 02:01:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:01:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:01:32,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:01:32,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:01:32,446 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 02:01:32,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:01:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 02:01:32,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:01:32,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-30 02:01:32,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377367145] [2020-11-30 02:01:32,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:01:32,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:01:32,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:01:32,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:01:32,489 INFO L87 Difference]: Start difference. First operand 883 states and 1099 transitions. Second operand 3 states. [2020-11-30 02:01:32,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:01:32,836 INFO L93 Difference]: Finished difference Result 1683 states and 2112 transitions. [2020-11-30 02:01:32,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:01:32,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-11-30 02:01:32,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:01:32,838 INFO L225 Difference]: With dead ends: 1683 [2020-11-30 02:01:32,838 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:01:32,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:01:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:01:32,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:01:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:01:32,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:01:32,841 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2020-11-30 02:01:32,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:01:32,841 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:01:32,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:01:32,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:01:32,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:01:33,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:01:33,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L568-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L571-1(lines 39 608) no Hoare annotation was computed. [2020-11-30 02:01:33,152 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-30 02:01:33,153 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-30 02:01:33,154 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-30 02:01:33,155 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-30 02:01:33,156 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-30 02:01:33,157 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-30 02:01:33,157 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and (<= ~a28~0 9) .cse0) (and (<= 8 ~a17~0) .cse0) (and (= ~a25~0 0) .cse0))) [2020-11-30 02:01:33,157 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-30 02:01:33,157 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-30 02:01:33,157 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-30 02:01:33,157 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-30 02:01:33,157 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-30 02:01:33,157 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 8))) (or (and (<= ~a28~0 9) .cse0) (and (<= 8 ~a17~0) .cse0) (and (= ~a25~0 0) .cse0))) [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-30 02:01:33,158 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-30 02:01:33,159 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-30 02:01:33,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:01:33 BoogieIcfgContainer [2020-11-30 02:01:33,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:01:33,181 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:01:33,181 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:01:33,181 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:01:33,182 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:01:26" (3/4) ... [2020-11-30 02:01:33,184 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:01:33,222 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-30 02:01:33,224 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-30 02:01:33,225 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 02:01:33,227 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:01:33,414 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7a110947-91ba-4fe2-9c6b-1f0cff29f94a/bin/utaipan/witness.graphml [2020-11-30 02:01:33,414 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:01:33,416 INFO L168 Benchmark]: Toolchain (without parser) took 10897.72 ms. Allocated memory was 86.0 MB in the beginning and 224.4 MB in the end (delta: 138.4 MB). Free memory was 51.6 MB in the beginning and 191.0 MB in the end (delta: -139.4 MB). Peak memory consumption was 126.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:33,417 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 86.0 MB. Free memory was 61.1 MB in the beginning and 61.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:01:33,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 762.86 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 51.4 MB in the beginning and 78.2 MB in the end (delta: -26.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:33,418 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.42 ms. Allocated memory is still 117.4 MB. Free memory was 77.5 MB in the beginning and 72.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:33,418 INFO L168 Benchmark]: Boogie Preprocessor took 66.41 ms. Allocated memory is still 117.4 MB. Free memory was 72.7 MB in the beginning and 67.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:33,419 INFO L168 Benchmark]: RCFGBuilder took 2679.56 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 67.7 MB in the beginning and 70.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 49.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:33,419 INFO L168 Benchmark]: TraceAbstraction took 7029.83 ms. Allocated memory was 146.8 MB in the beginning and 224.4 MB in the end (delta: 77.6 MB). Free memory was 70.9 MB in the beginning and 79.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:33,420 INFO L168 Benchmark]: Witness Printer took 233.89 ms. Allocated memory is still 224.4 MB. Free memory was 79.2 MB in the beginning and 191.0 MB in the end (delta: -111.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:01:33,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 86.0 MB. Free memory was 61.1 MB in the beginning and 61.1 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 762.86 ms. Allocated memory was 86.0 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Free memory was 51.4 MB in the beginning and 78.2 MB in the end (delta: -26.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.42 ms. Allocated memory is still 117.4 MB. Free memory was 77.5 MB in the beginning and 72.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.41 ms. Allocated memory is still 117.4 MB. Free memory was 72.7 MB in the beginning and 67.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2679.56 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 67.7 MB in the beginning and 70.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 49.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7029.83 ms. Allocated memory was 146.8 MB in the beginning and 224.4 MB in the end (delta: 77.6 MB). Free memory was 70.9 MB in the beginning and 79.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 69.3 MB. Max. memory is 16.1 GB. * Witness Printer took 233.89 ms. Allocated memory is still 224.4 MB. Free memory was 79.2 MB in the beginning and 191.0 MB in the end (delta: -111.8 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((a28 <= 9 && a17 <= 8) || (8 <= a17 && a17 <= 8)) || (a25 == 0 && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((a28 <= 9 && a17 <= 8) || (8 <= a17 && a17 <= 8)) || (a25 == 0 && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 333 SDtfs, 685 SDslu, 54 SDs, 0 SdLazy, 1960 SolverSat, 544 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 740 GetRequests, 718 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=883occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 270 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 35 NumberOfFragments, 45 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1104 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1223 NumberOfCodeBlocks, 1223 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1570 ConstructedInterpolants, 0 QuantifiedInterpolants, 393356 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1007 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 713/727 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...