./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label56.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_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label56.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/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 bdcfaafc90ac15119dce6cd8ad2b55faf8fffd21 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:44:17,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:44:17,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:44:17,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:44:17,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:44:17,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:44:17,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:44:17,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:44:17,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:44:17,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:44:17,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:44:17,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:44:17,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:44:17,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:44:17,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:44:17,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:44:17,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:44:17,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:44:17,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:44:17,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:44:17,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:44:17,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:44:17,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:44:17,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:44:17,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:44:17,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:44:17,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:44:17,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:44:17,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:44:17,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:44:17,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:44:17,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:44:17,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:44:17,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:44:17,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:44:17,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:44:17,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:44:17,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:44:17,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:44:17,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:44:17,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:44:17,274 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:44:17,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:44:17,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:44:17,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:44:17,322 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:44:17,323 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:44:17,323 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:44:17,323 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:44:17,323 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:44:17,324 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:44:17,324 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:44:17,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:44:17,325 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:44:17,326 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:44:17,326 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:44:17,326 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:44:17,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:44:17,327 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:44:17,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:44:17,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:44:17,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:44:17,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:44:17,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:44:17,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:44:17,329 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:44:17,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:44:17,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:44:17,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:44:17,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:44:17,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:44:17,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:44:17,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:44:17,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:44:17,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:44:17,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:44:17,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:44:17,334 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:44:17,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:44:17,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:44:17,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:44:17,335 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:44:17,335 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_c976a339-887f-4e39-b10a-1beafc050631/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdcfaafc90ac15119dce6cd8ad2b55faf8fffd21 [2020-11-28 07:44:17,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:44:17,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:44:17,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:44:17,637 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:44:17,639 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:44:17,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label56.c [2020-11-28 07:44:17,726 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/data/e4b5422c6/abad212a441345e291004b73c42a543a/FLAG90ac1d788 [2020-11-28 07:44:18,446 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:44:18,446 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/sv-benchmarks/c/eca-rers2012/Problem02_label56.c [2020-11-28 07:44:18,474 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/data/e4b5422c6/abad212a441345e291004b73c42a543a/FLAG90ac1d788 [2020-11-28 07:44:18,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/data/e4b5422c6/abad212a441345e291004b73c42a543a [2020-11-28 07:44:18,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:44:18,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:44:18,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:18,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:44:18,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:44:18,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:18" (1/1) ... [2020-11-28 07:44:18,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52925e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:18, skipping insertion in model container [2020-11-28 07:44:18,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:18" (1/1) ... [2020-11-28 07:44:18,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:44:18,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:44:19,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:19,194 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:44:19,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:19,399 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:44:19,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19 WrapperNode [2020-11-28 07:44:19,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:19,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:19,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:44:19,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:44:19,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... [2020-11-28 07:44:19,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... [2020-11-28 07:44:19,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:19,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:44:19,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:44:19,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:44:19,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... [2020-11-28 07:44:19,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... [2020-11-28 07:44:19,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... [2020-11-28 07:44:19,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... [2020-11-28 07:44:19,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... [2020-11-28 07:44:19,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... [2020-11-28 07:44:19,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... [2020-11-28 07:44:19,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:44:19,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:44:19,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:44:19,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:44:19,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/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 [2020-11-28 07:44:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:44:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:44:19,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:44:19,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:44:22,140 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:44:22,141 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:44:22,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:22 BoogieIcfgContainer [2020-11-28 07:44:22,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:44:22,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:44:22,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:44:22,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:44:22,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:44:18" (1/3) ... [2020-11-28 07:44:22,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538d0b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:22, skipping insertion in model container [2020-11-28 07:44:22,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:19" (2/3) ... [2020-11-28 07:44:22,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@538d0b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:22, skipping insertion in model container [2020-11-28 07:44:22,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:22" (3/3) ... [2020-11-28 07:44:22,175 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label56.c [2020-11-28 07:44:22,186 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:44:22,190 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:44:22,201 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:44:22,234 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:44:22,235 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:44:22,235 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:44:22,235 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:44:22,235 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:44:22,235 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:44:22,236 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:44:22,236 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:44:22,256 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:44:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:44:22,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:22,268 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] [2020-11-28 07:44:22,268 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:22,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:22,277 INFO L82 PathProgramCache]: Analyzing trace with hash -216540400, now seen corresponding path program 1 times [2020-11-28 07:44:22,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:22,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510250933] [2020-11-28 07:44:22,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:22,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510250933] [2020-11-28 07:44:22,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:22,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:22,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129489916] [2020-11-28 07:44:22,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:22,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:22,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:22,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:22,712 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:44:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:23,535 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:44:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:23,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:44:23,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:23,558 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:44:23,564 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:44:23,568 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 [2020-11-28 07:44:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:44:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:44:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:44:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2020-11-28 07:44:23,644 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2020-11-28 07:44:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:23,645 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2020-11-28 07:44:23,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2020-11-28 07:44:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 07:44:23,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:23,652 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:23,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:44:23,652 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:23,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:23,655 INFO L82 PathProgramCache]: Analyzing trace with hash -125429269, now seen corresponding path program 1 times [2020-11-28 07:44:23,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:23,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22127781] [2020-11-28 07:44:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:23,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22127781] [2020-11-28 07:44:23,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:23,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:23,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658692282] [2020-11-28 07:44:23,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:23,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:23,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:23,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:23,839 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2020-11-28 07:44:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:24,348 INFO L93 Difference]: Finished difference Result 485 states and 756 transitions. [2020-11-28 07:44:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:24,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-28 07:44:24,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:24,352 INFO L225 Difference]: With dead ends: 485 [2020-11-28 07:44:24,353 INFO L226 Difference]: Without dead ends: 323 [2020-11-28 07:44:24,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-28 07:44:24,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-28 07:44:24,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-28 07:44:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2020-11-28 07:44:24,375 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 85 [2020-11-28 07:44:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:24,378 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2020-11-28 07:44:24,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:24,379 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2020-11-28 07:44:24,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-28 07:44:24,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:24,387 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] [2020-11-28 07:44:24,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:44:24,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:24,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1654434274, now seen corresponding path program 1 times [2020-11-28 07:44:24,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:24,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599563598] [2020-11-28 07:44:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:24,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599563598] [2020-11-28 07:44:24,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256105433] [2020-11-28 07:44:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/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 [2020-11-28 07:44:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:24,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:44:24,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:44:24,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:24,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 07:44:24,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:44:24,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-28 07:44:24,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159675387] [2020-11-28 07:44:24,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:24,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:24,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:24,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:44:24,747 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand 3 states. [2020-11-28 07:44:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:25,434 INFO L93 Difference]: Finished difference Result 805 states and 1261 transitions. [2020-11-28 07:44:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:25,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-11-28 07:44:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:25,438 INFO L225 Difference]: With dead ends: 805 [2020-11-28 07:44:25,438 INFO L226 Difference]: Without dead ends: 483 [2020-11-28 07:44:25,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:44:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-28 07:44:25,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-28 07:44:25,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:44:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 728 transitions. [2020-11-28 07:44:25,484 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 728 transitions. Word has length 89 [2020-11-28 07:44:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:25,484 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 728 transitions. [2020-11-28 07:44:25,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:25,485 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 728 transitions. [2020-11-28 07:44:25,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-28 07:44:25,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:25,487 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:25,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:44:25,718 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:25,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1373214216, now seen corresponding path program 1 times [2020-11-28 07:44:25,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:25,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479642210] [2020-11-28 07:44:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:25,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479642210] [2020-11-28 07:44:25,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:25,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:44:25,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640558125] [2020-11-28 07:44:25,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:25,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:25,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:25,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:25,815 INFO L87 Difference]: Start difference. First operand 483 states and 728 transitions. Second operand 3 states. [2020-11-28 07:44:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:26,409 INFO L93 Difference]: Finished difference Result 1125 states and 1751 transitions. [2020-11-28 07:44:26,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:26,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-28 07:44:26,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:26,412 INFO L225 Difference]: With dead ends: 1125 [2020-11-28 07:44:26,412 INFO L226 Difference]: Without dead ends: 643 [2020-11-28 07:44:26,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-28 07:44:26,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-28 07:44:26,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:44:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1004 transitions. [2020-11-28 07:44:26,435 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1004 transitions. Word has length 103 [2020-11-28 07:44:26,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:26,436 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 1004 transitions. [2020-11-28 07:44:26,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1004 transitions. [2020-11-28 07:44:26,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-11-28 07:44:26,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:26,438 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:26,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:44:26,438 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash -37636531, now seen corresponding path program 1 times [2020-11-28 07:44:26,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:26,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72893076] [2020-11-28 07:44:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 07:44:26,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72893076] [2020-11-28 07:44:26,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:26,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:26,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585499435] [2020-11-28 07:44:26,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:26,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:26,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:26,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:44:26,523 INFO L87 Difference]: Start difference. First operand 643 states and 1004 transitions. Second operand 3 states. [2020-11-28 07:44:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:27,063 INFO L93 Difference]: Finished difference Result 1845 states and 2853 transitions. [2020-11-28 07:44:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:27,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-11-28 07:44:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:27,074 INFO L225 Difference]: With dead ends: 1845 [2020-11-28 07:44:27,074 INFO L226 Difference]: Without dead ends: 1203 [2020-11-28 07:44:27,076 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 [2020-11-28 07:44:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-11-28 07:44:27,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2020-11-28 07:44:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-11-28 07:44:27,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1708 transitions. [2020-11-28 07:44:27,143 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1708 transitions. Word has length 105 [2020-11-28 07:44:27,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:27,144 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1708 transitions. [2020-11-28 07:44:27,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:27,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1708 transitions. [2020-11-28 07:44:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-28 07:44:27,150 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:27,151 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:27,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:44:27,151 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:27,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:27,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1281005266, now seen corresponding path program 1 times [2020-11-28 07:44:27,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:27,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488063112] [2020-11-28 07:44:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:44:27,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488063112] [2020-11-28 07:44:27,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538042459] [2020-11-28 07:44:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/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 [2020-11-28 07:44:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:27,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:44:27,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:44:27,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 07:44:27,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-28 07:44:27,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-28 07:44:27,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317809142] [2020-11-28 07:44:27,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:44:27,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:27,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:44:27,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:44:27,734 INFO L87 Difference]: Start difference. First operand 1203 states and 1708 transitions. Second operand 3 states. [2020-11-28 07:44:28,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:28,251 INFO L93 Difference]: Finished difference Result 2963 states and 4199 transitions. [2020-11-28 07:44:28,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:28,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-28 07:44:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:28,252 INFO L225 Difference]: With dead ends: 2963 [2020-11-28 07:44:28,253 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:44:28,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:44:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:44:28,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:44:28,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:44:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:44:28,257 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2020-11-28 07:44:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:28,258 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:44:28,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:44:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:44:28,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:44:28,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:44:28,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:44:28,641 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:44:28,641 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:44:28,641 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:44:28,641 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:44:28,641 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:44:28,641 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:44:28,641 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:44:28,641 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:44:28,642 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:44:28,643 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:44:28,644 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:44:28,645 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:44:28,646 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse1 (<= ~a17~0 7)) (.cse2 (<= ~a28~0 10))) (or (and .cse0 .cse1) (and .cse0 .cse2) (not (= ~a11~0 1)) (<= ~a28~0 9) (and .cse1 .cse2))) [2020-11-28 07:44:28,646 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:44:28,646 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:44:28,646 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:44:28,646 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:44:28,646 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:44:28,646 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:44:28,646 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:44:28,646 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:44:28,646 INFO L274 CegarLoopResult]: For program point L547-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:44:28,647 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:44:28,647 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:44:28,647 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:44:28,647 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (= ~a19~0 1)) (.cse1 (<= ~a17~0 7)) (.cse2 (<= ~a28~0 10))) (or (and .cse0 .cse1) (and .cse0 .cse2) (not (= ~a11~0 1)) (<= ~a28~0 9) (and .cse1 .cse2))) [2020-11-28 07:44:28,647 INFO L274 CegarLoopResult]: For program point L550-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:44:28,647 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:44:28,647 INFO L274 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-11-28 07:44:28,647 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:44:28,647 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:44:28,647 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:44:28,648 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:44:28,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:44:28 BoogieIcfgContainer [2020-11-28 07:44:28,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:44:28,671 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:44:28,671 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:44:28,671 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:44:28,671 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:22" (3/4) ... [2020-11-28 07:44:28,674 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:44:28,715 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-28 07:44:28,717 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-28 07:44:28,719 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 07:44:28,720 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 07:44:28,902 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c976a339-887f-4e39-b10a-1beafc050631/bin/utaipan/witness.graphml [2020-11-28 07:44:28,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:44:28,905 INFO L168 Benchmark]: Toolchain (without parser) took 10199.56 ms. Allocated memory was 92.3 MB in the beginning and 218.1 MB in the end (delta: 125.8 MB). Free memory was 61.6 MB in the beginning and 170.7 MB in the end (delta: -109.2 MB). Peak memory consumption was 128.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:28,905 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:28,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.10 ms. Allocated memory is still 92.3 MB. Free memory was 61.4 MB in the beginning and 53.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:28,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.34 ms. Allocated memory is still 92.3 MB. Free memory was 53.3 MB in the beginning and 48.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:28,907 INFO L168 Benchmark]: Boogie Preprocessor took 107.27 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 48.0 MB in the beginning and 91.8 MB in the end (delta: -43.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:28,907 INFO L168 Benchmark]: RCFGBuilder took 2528.80 ms. Allocated memory is still 119.5 MB. Free memory was 91.8 MB in the beginning and 34.7 MB in the end (delta: 57.1 MB). Peak memory consumption was 69.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:28,908 INFO L168 Benchmark]: TraceAbstraction took 6525.15 ms. Allocated memory was 119.5 MB in the beginning and 218.1 MB in the end (delta: 98.6 MB). Free memory was 34.7 MB in the beginning and 62.4 MB in the end (delta: -27.7 MB). Peak memory consumption was 70.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:28,908 INFO L168 Benchmark]: Witness Printer took 232.24 ms. Allocated memory is still 218.1 MB. Free memory was 62.4 MB in the beginning and 170.7 MB in the end (delta: -108.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:28,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 92.3 MB. Free memory is still 50.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 693.10 ms. Allocated memory is still 92.3 MB. Free memory was 61.4 MB in the beginning and 53.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.34 ms. Allocated memory is still 92.3 MB. Free memory was 53.3 MB in the beginning and 48.0 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 107.27 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 48.0 MB in the beginning and 91.8 MB in the end (delta: -43.9 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2528.80 ms. Allocated memory is still 119.5 MB. Free memory was 91.8 MB in the beginning and 34.7 MB in the end (delta: 57.1 MB). Peak memory consumption was 69.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6525.15 ms. Allocated memory was 119.5 MB in the beginning and 218.1 MB in the end (delta: 98.6 MB). Free memory was 34.7 MB in the beginning and 62.4 MB in the end (delta: -27.7 MB). Peak memory consumption was 70.8 MB. Max. memory is 16.1 GB. * Witness Printer took 232.24 ms. Allocated memory is still 218.1 MB. Free memory was 62.4 MB in the beginning and 170.7 MB in the end (delta: -108.3 MB). Peak memory consumption was 4.2 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: ((((a19 == 1 && a17 <= 7) || (a19 == 1 && a28 <= 10)) || !(a11 == 1)) || a28 <= 9) || (a17 <= 7 && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((a19 == 1 && a17 <= 7) || (a19 == 1 && a28 <= 10)) || !(a11 == 1)) || a28 <= 9) || (a17 <= 7 && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.2s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 352 SDtfs, 237 SDslu, 24 SDs, 0 SdLazy, 1385 SolverSat, 510 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 405 GetRequests, 392 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=5, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 49 NumberOfFragments, 59 HoareAnnotationTreeSize, 3 FomulaSimplifications, 414 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 765 NumberOfCodeBlocks, 765 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 951 ConstructedInterpolants, 0 QuantifiedInterpolants, 371089 SizeOfPredicates, 2 NumberOfNonLiveVariables, 557 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 174/193 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...