./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label51.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/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 3dbbb1f70616704ad9b02f210e75a75600771bab ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 10:46:32,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:46:32,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:46:32,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:46:32,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:46:32,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:46:32,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:46:32,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:46:32,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:46:32,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:46:32,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:46:32,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:46:32,469 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:46:32,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:46:32,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:46:32,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:46:32,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:46:32,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:46:32,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:46:32,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:46:32,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:46:32,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:46:32,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:46:32,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:46:32,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:46:32,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:46:32,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:46:32,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:46:32,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:46:32,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:46:32,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:46:32,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:46:32,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:46:32,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:46:32,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:46:32,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:46:32,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:46:32,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:46:32,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:46:32,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:46:32,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:46:32,496 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:46:32,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:46:32,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:46:32,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:46:32,512 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:46:32,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:46:32,513 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:46:32,513 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:46:32,513 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:46:32,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:46:32,513 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:46:32,513 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:46:32,513 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:46:32,513 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:46:32,513 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:46:32,513 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:46:32,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:46:32,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:46:32,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:46:32,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:46:32,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:46:32,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:46:32,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:46:32,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:46:32,515 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:46:32,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:46:32,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:46:32,515 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:46:32,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:46:32,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:46:32,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:46:32,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:46:32,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:46:32,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:46:32,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:46:32,516 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:46:32,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:46:32,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:46:32,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:46:32,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:46:32,517 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_8b19635b-7b09-4e9a-8720-3541bbdf6f87/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dbbb1f70616704ad9b02f210e75a75600771bab [2020-12-09 10:46:32,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:46:32,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:46:32,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:46:32,714 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:46:32,714 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:46:32,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label51.c [2020-12-09 10:46:32,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/data/b0591c64a/5dd36fbb1a424442943ebc5ae65cb477/FLAG4407cfe21 [2020-12-09 10:46:33,167 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:46:33,168 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/sv-benchmarks/c/eca-rers2012/Problem02_label51.c [2020-12-09 10:46:33,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/data/b0591c64a/5dd36fbb1a424442943ebc5ae65cb477/FLAG4407cfe21 [2020-12-09 10:46:33,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/data/b0591c64a/5dd36fbb1a424442943ebc5ae65cb477 [2020-12-09 10:46:33,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:46:33,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:46:33,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:46:33,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:46:33,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:46:33,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@105fc3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33, skipping insertion in model container [2020-12-09 10:46:33,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:46:33,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:46:33,456 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/sv-benchmarks/c/eca-rers2012/Problem02_label51.c[17924,17937] [2020-12-09 10:46:33,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:46:33,482 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:46:33,547 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/sv-benchmarks/c/eca-rers2012/Problem02_label51.c[17924,17937] [2020-12-09 10:46:33,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:46:33,566 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:46:33,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33 WrapperNode [2020-12-09 10:46:33,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:46:33,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:46:33,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:46:33,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:46:33,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:46:33,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:46:33,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:46:33,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:46:33,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... [2020-12-09 10:46:33,663 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:46:33,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:46:33,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:46:33,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:46:33,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/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 [2020-12-09 10:46:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:46:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:46:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:46:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:46:34,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:46:34,969 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 10:46:34,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:46:34 BoogieIcfgContainer [2020-12-09 10:46:34,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:46:34,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:46:34,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:46:34,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:46:34,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:46:33" (1/3) ... [2020-12-09 10:46:34,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d9aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:46:34, skipping insertion in model container [2020-12-09 10:46:34,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:46:33" (2/3) ... [2020-12-09 10:46:34,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d9aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:46:34, skipping insertion in model container [2020-12-09 10:46:34,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:46:34" (3/3) ... [2020-12-09 10:46:34,980 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label51.c [2020-12-09 10:46:34,994 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:46:34,998 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 10:46:35,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 10:46:35,026 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:46:35,026 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:46:35,027 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:46:35,027 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:46:35,027 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:46:35,027 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:46:35,027 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:46:35,027 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:46:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 10:46:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 10:46:35,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:46:35,048 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] [2020-12-09 10:46:35,048 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:46:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:46:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash 925955855, now seen corresponding path program 1 times [2020-12-09 10:46:35,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:46:35,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119313849] [2020-12-09 10:46:35,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:46:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:35,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:46:35,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119313849] [2020-12-09 10:46:35,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:46:35,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:46:35,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931907093] [2020-12-09 10:46:35,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:46:35,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:46:35,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:46:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:46:35,316 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 10:46:35,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:46:35,625 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 10:46:35,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:46:35,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 10:46:35,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:46:35,639 INFO L225 Difference]: With dead ends: 251 [2020-12-09 10:46:35,639 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 10:46:35,642 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 [2020-12-09 10:46:35,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 10:46:35,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 10:46:35,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 10:46:35,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2020-12-09 10:46:35,688 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2020-12-09 10:46:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:46:35,689 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2020-12-09 10:46:35,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:46:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2020-12-09 10:46:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 10:46:35,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:46:35,693 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] [2020-12-09 10:46:35,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:46:35,693 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:46:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:46:35,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1028676612, now seen corresponding path program 1 times [2020-12-09 10:46:35,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:46:35,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027656306] [2020-12-09 10:46:35,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:46:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:46:35,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027656306] [2020-12-09 10:46:35,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:46:35,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:46:35,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635366480] [2020-12-09 10:46:35,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:46:35,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:46:35,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:46:35,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:46:35,765 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2020-12-09 10:46:36,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:46:36,042 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2020-12-09 10:46:36,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:46:36,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 10:46:36,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:46:36,046 INFO L225 Difference]: With dead ends: 485 [2020-12-09 10:46:36,046 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 10:46:36,048 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 [2020-12-09 10:46:36,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 10:46:36,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 10:46:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 10:46:36,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 488 transitions. [2020-12-09 10:46:36,070 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 488 transitions. Word has length 84 [2020-12-09 10:46:36,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:46:36,070 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 488 transitions. [2020-12-09 10:46:36,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:46:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 488 transitions. [2020-12-09 10:46:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-12-09 10:46:36,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:46:36,075 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] [2020-12-09 10:46:36,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:46:36,076 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:46:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:46:36,076 INFO L82 PathProgramCache]: Analyzing trace with hash 2137926493, now seen corresponding path program 1 times [2020-12-09 10:46:36,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:46:36,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653871399] [2020-12-09 10:46:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:46:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:46:36,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653871399] [2020-12-09 10:46:36,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766867550] [2020-12-09 10:46:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/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 [2020-12-09 10:46:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:36,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:46:36,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:46:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 10:46:36,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:46:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 10:46:36,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:46:36,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 10:46:36,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509866724] [2020-12-09 10:46:36,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:46:36,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:46:36,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:46:36,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:46:36,370 INFO L87 Difference]: Start difference. First operand 323 states and 488 transitions. Second operand 3 states. [2020-12-09 10:46:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:46:36,666 INFO L93 Difference]: Finished difference Result 805 states and 1271 transitions. [2020-12-09 10:46:36,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:46:36,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-12-09 10:46:36,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:46:36,669 INFO L225 Difference]: With dead ends: 805 [2020-12-09 10:46:36,669 INFO L226 Difference]: Without dead ends: 483 [2020-12-09 10:46:36,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:46:36,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-12-09 10:46:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-12-09 10:46:36,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 10:46:36,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 738 transitions. [2020-12-09 10:46:36,689 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 738 transitions. Word has length 89 [2020-12-09 10:46:36,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:46:36,690 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 738 transitions. [2020-12-09 10:46:36,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:46:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 738 transitions. [2020-12-09 10:46:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 10:46:36,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:46:36,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2020-12-09 10:46:36,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 10:46:36,893 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:46:36,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:46:36,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1080650623, now seen corresponding path program 1 times [2020-12-09 10:46:36,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:46:36,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497682622] [2020-12-09 10:46:36,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:46:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-09 10:46:36,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497682622] [2020-12-09 10:46:36,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342572544] [2020-12-09 10:46:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/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 [2020-12-09 10:46:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:37,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:46:37,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:46:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 10:46:37,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:46:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 10:46:37,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:46:37,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 10:46:37,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072290949] [2020-12-09 10:46:37,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:46:37,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:46:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:46:37,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:46:37,165 INFO L87 Difference]: Start difference. First operand 483 states and 738 transitions. Second operand 3 states. [2020-12-09 10:46:37,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:46:37,434 INFO L93 Difference]: Finished difference Result 1205 states and 1881 transitions. [2020-12-09 10:46:37,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:46:37,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 10:46:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:46:37,439 INFO L225 Difference]: With dead ends: 1205 [2020-12-09 10:46:37,439 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 10:46:37,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 10:46:37,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 10:46:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-09 10:46:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 10:46:37,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1064 transitions. [2020-12-09 10:46:37,455 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1064 transitions. Word has length 103 [2020-12-09 10:46:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:46:37,456 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 1064 transitions. [2020-12-09 10:46:37,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:46:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1064 transitions. [2020-12-09 10:46:37,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 10:46:37,458 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:46:37,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 10:46:37,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:46:37,660 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:46:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:46:37,662 INFO L82 PathProgramCache]: Analyzing trace with hash 555727766, now seen corresponding path program 1 times [2020-12-09 10:46:37,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:46:37,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373412086] [2020-12-09 10:46:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:46:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:46:37,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373412086] [2020-12-09 10:46:37,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:46:37,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 10:46:37,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239742265] [2020-12-09 10:46:37,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:46:37,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:46:37,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:46:37,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:46:37,734 INFO L87 Difference]: Start difference. First operand 723 states and 1064 transitions. Second operand 3 states. [2020-12-09 10:46:38,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:46:38,002 INFO L93 Difference]: Finished difference Result 1605 states and 2377 transitions. [2020-12-09 10:46:38,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:46:38,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 10:46:38,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:46:38,008 INFO L225 Difference]: With dead ends: 1605 [2020-12-09 10:46:38,008 INFO L226 Difference]: Without dead ends: 883 [2020-12-09 10:46:38,009 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 [2020-12-09 10:46:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2020-12-09 10:46:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2020-12-09 10:46:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-12-09 10:46:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1249 transitions. [2020-12-09 10:46:38,031 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1249 transitions. Word has length 103 [2020-12-09 10:46:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:46:38,032 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 1249 transitions. [2020-12-09 10:46:38,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:46:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1249 transitions. [2020-12-09 10:46:38,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-09 10:46:38,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:46:38,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-12-09 10:46:38,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 10:46:38,035 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:46:38,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:46:38,036 INFO L82 PathProgramCache]: Analyzing trace with hash 972873799, now seen corresponding path program 1 times [2020-12-09 10:46:38,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:46:38,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90597256] [2020-12-09 10:46:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:46:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:46:38,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90597256] [2020-12-09 10:46:38,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:46:38,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:46:38,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842249897] [2020-12-09 10:46:38,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:46:38,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:46:38,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:46:38,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:46:38,085 INFO L87 Difference]: Start difference. First operand 883 states and 1249 transitions. Second operand 3 states. [2020-12-09 10:46:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:46:38,436 INFO L93 Difference]: Finished difference Result 2325 states and 3303 transitions. [2020-12-09 10:46:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:46:38,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-09 10:46:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:46:38,443 INFO L225 Difference]: With dead ends: 2325 [2020-12-09 10:46:38,443 INFO L226 Difference]: Without dead ends: 1443 [2020-12-09 10:46:38,444 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 [2020-12-09 10:46:38,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2020-12-09 10:46:38,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2020-12-09 10:46:38,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2020-12-09 10:46:38,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1949 transitions. [2020-12-09 10:46:38,478 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1949 transitions. Word has length 108 [2020-12-09 10:46:38,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:46:38,479 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 1949 transitions. [2020-12-09 10:46:38,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:46:38,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1949 transitions. [2020-12-09 10:46:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-09 10:46:38,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:46:38,482 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-12-09 10:46:38,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 10:46:38,482 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:46:38,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:46:38,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1229829536, now seen corresponding path program 1 times [2020-12-09 10:46:38,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:46:38,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529254275] [2020-12-09 10:46:38,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:46:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:46:38,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529254275] [2020-12-09 10:46:38,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812020575] [2020-12-09 10:46:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/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 [2020-12-09 10:46:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:38,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 10:46:38,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 10:46:38,718 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 10:46:38,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 10:46:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 10:46:38,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 10:46:38,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 10:46:38,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097021721] [2020-12-09 10:46:38,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:46:38,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:46:38,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:46:38,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:46:38,814 INFO L87 Difference]: Start difference. First operand 1443 states and 1949 transitions. Second operand 3 states. [2020-12-09 10:46:39,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:46:39,100 INFO L93 Difference]: Finished difference Result 3045 states and 4137 transitions. [2020-12-09 10:46:39,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:46:39,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-12-09 10:46:39,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:46:39,107 INFO L225 Difference]: With dead ends: 3045 [2020-12-09 10:46:39,108 INFO L226 Difference]: Without dead ends: 1603 [2020-12-09 10:46:39,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:46:39,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2020-12-09 10:46:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1523. [2020-12-09 10:46:39,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1523 states. [2020-12-09 10:46:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2008 transitions. [2020-12-09 10:46:39,136 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2008 transitions. Word has length 113 [2020-12-09 10:46:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:46:39,136 INFO L481 AbstractCegarLoop]: Abstraction has 1523 states and 2008 transitions. [2020-12-09 10:46:39,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:46:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2008 transitions. [2020-12-09 10:46:39,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-09 10:46:39,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:46:39,139 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 10:46:39,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 10:46:39,341 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:46:39,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:46:39,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1733566946, now seen corresponding path program 1 times [2020-12-09 10:46:39,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:46:39,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989653749] [2020-12-09 10:46:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:46:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:46:39,507 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:46:39,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989653749] [2020-12-09 10:46:39,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:46:39,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:46:39,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304380005] [2020-12-09 10:46:39,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:46:39,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:46:39,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:46:39,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:46:39,509 INFO L87 Difference]: Start difference. First operand 1523 states and 2008 transitions. Second operand 3 states. [2020-12-09 10:46:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:46:39,811 INFO L93 Difference]: Finished difference Result 4243 states and 5564 transitions. [2020-12-09 10:46:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:46:39,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-12-09 10:46:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:46:39,812 INFO L225 Difference]: With dead ends: 4243 [2020-12-09 10:46:39,812 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:46:39,815 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 [2020-12-09 10:46:39,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:46:39,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:46:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:46:39,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:46:39,816 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 141 [2020-12-09 10:46:39,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:46:39,816 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:46:39,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:46:39,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:46:39,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:46:39,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 10:46:39,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:46:39,876 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 10:46:39,876 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 10:46:39,876 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 10:46:39,876 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 10:46:39,876 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 10:46:39,876 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 10:46:39,876 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 10:46:39,876 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L508-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L511-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-12-09 10:46:39,877 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 10:46:39,878 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 512) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 10:46:39,879 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 10:46:39,880 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (or (<= 9 ~a28~0) (= ~a25~0 0) (= ~a19~0 1) (= ~a11~0 0) (<= ~a28~0 7)) [2020-12-09 10:46:39,880 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (or (<= 9 ~a28~0) (= ~a25~0 0) (= ~a19~0 1) (= ~a11~0 0) (<= ~a28~0 7)) [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 10:46:39,881 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 10:46:39,882 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 10:46:39,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:46:39 BoogieIcfgContainer [2020-12-09 10:46:39,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:46:39,894 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:46:39,894 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:46:39,894 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:46:39,895 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:46:34" (3/4) ... [2020-12-09 10:46:39,897 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:46:39,913 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 10:46:39,914 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 10:46:39,915 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 10:46:39,917 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 10:46:40,010 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8b19635b-7b09-4e9a-8720-3541bbdf6f87/bin/utaipan/witness.graphml [2020-12-09 10:46:40,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:46:40,011 INFO L168 Benchmark]: Toolchain (without parser) took 6821.67 ms. Allocated memory was 98.6 MB in the beginning and 209.7 MB in the end (delta: 111.1 MB). Free memory was 59.8 MB in the beginning and 167.5 MB in the end (delta: -107.8 MB). Peak memory consumption was 115.9 MB. Max. memory is 16.1 GB. [2020-12-09 10:46:40,011 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 98.6 MB. Free memory is still 77.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:46:40,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.60 ms. Allocated memory is still 98.6 MB. Free memory was 59.6 MB in the beginning and 59.2 MB in the end (delta: 372.7 kB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:46:40,012 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.10 ms. Allocated memory is still 98.6 MB. Free memory was 59.2 MB in the beginning and 53.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:46:40,012 INFO L168 Benchmark]: Boogie Preprocessor took 42.16 ms. Allocated memory is still 98.6 MB. Free memory was 53.8 MB in the beginning and 49.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:46:40,012 INFO L168 Benchmark]: RCFGBuilder took 1308.49 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 49.2 MB in the beginning and 108.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:46:40,013 INFO L168 Benchmark]: TraceAbstraction took 4920.38 ms. Allocated memory was 144.7 MB in the beginning and 209.7 MB in the end (delta: 65.0 MB). Free memory was 108.8 MB in the beginning and 62.9 MB in the end (delta: 45.9 MB). Peak memory consumption was 112.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:46:40,013 INFO L168 Benchmark]: Witness Printer took 115.68 ms. Allocated memory is still 209.7 MB. Free memory was 62.9 MB in the beginning and 167.5 MB in the end (delta: -104.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:46:40,014 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 98.6 MB. Free memory is still 77.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.60 ms. Allocated memory is still 98.6 MB. Free memory was 59.6 MB in the beginning and 59.2 MB in the end (delta: 372.7 kB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.10 ms. Allocated memory is still 98.6 MB. Free memory was 59.2 MB in the beginning and 53.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.16 ms. Allocated memory is still 98.6 MB. Free memory was 53.8 MB in the beginning and 49.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1308.49 ms. Allocated memory was 98.6 MB in the beginning and 144.7 MB in the end (delta: 46.1 MB). Free memory was 49.2 MB in the beginning and 108.8 MB in the end (delta: -59.6 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4920.38 ms. Allocated memory was 144.7 MB in the beginning and 209.7 MB in the end (delta: 65.0 MB). Free memory was 108.8 MB in the beginning and 62.9 MB in the end (delta: 45.9 MB). Peak memory consumption was 112.0 MB. Max. memory is 16.1 GB. * Witness Printer took 115.68 ms. Allocated memory is still 209.7 MB. Free memory was 62.9 MB in the beginning and 167.5 MB in the end (delta: -104.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 512]: call to reach_error is unreachable For all program executions holds that call to reach_error is 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: (((9 <= a28 || a25 == 0) || a19 == 1) || a11 == 0) || a28 <= 7 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((9 <= a28 || a25 == 0) || a19 == 1) || a11 == 0) || a28 <= 7 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 580 SDtfs, 407 SDslu, 42 SDs, 0 SdLazy, 1947 SolverSat, 490 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 625 GetRequests, 607 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1523occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 80 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 73 NumberOfFragments, 33 HoareAnnotationTreeSize, 3 FomulaSimplifications, 714 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1126 NumberOfCodeBlocks, 1126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1417 ConstructedInterpolants, 0 QuantifiedInterpolants, 312735 SizeOfPredicates, 0 NumberOfNonLiveVariables, 825 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 358/372 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...