./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label22.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_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c -s /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/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 d347897b483e2048bb7af7fe5bb03b68d0369bfa ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 07:40:09,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:40:09,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:40:09,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:40:09,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:40:09,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:40:09,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:40:09,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:40:09,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:40:09,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:40:09,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:40:09,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:40:09,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:40:09,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:40:09,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:40:09,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:40:09,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:40:09,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:40:09,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:40:09,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:40:09,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:40:09,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:40:09,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:40:09,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:40:09,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:40:09,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:40:09,574 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:40:09,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:40:09,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:40:09,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:40:09,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:40:09,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:40:09,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:40:09,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:40:09,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:40:09,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:40:09,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:40:09,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:40:09,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:40:09,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:40:09,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:40:09,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:40:09,611 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:40:09,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:40:09,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:40:09,613 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:40:09,613 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:40:09,614 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:40:09,614 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:40:09,614 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:40:09,614 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:40:09,615 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:40:09,615 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:40:09,615 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:40:09,615 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:40:09,616 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:40:09,616 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:40:09,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:40:09,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:40:09,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:40:09,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:40:09,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:40:09,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:40:09,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:40:09,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:40:09,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:40:09,619 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:40:09,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:40:09,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:40:09,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:40:09,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:40:09,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:40:09,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:40:09,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:40:09,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:40:09,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:40:09,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:40:09,622 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:40:09,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:40:09,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:40:09,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:40:09,623 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:40:09,623 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_93c8440c-65fb-4b71-84f2-4067be39d6ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d347897b483e2048bb7af7fe5bb03b68d0369bfa [2020-11-28 07:40:09,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:40:09,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:40:09,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:40:09,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:40:09,883 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:40:09,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2020-11-28 07:40:09,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/data/85ddc8c1e/4e97126e3ea54ff58fa6fb4d5b30f096/FLAGec82d3ba3 [2020-11-28 07:40:10,544 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:40:10,545 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/sv-benchmarks/c/eca-rers2012/Problem02_label22.c [2020-11-28 07:40:10,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/data/85ddc8c1e/4e97126e3ea54ff58fa6fb4d5b30f096/FLAGec82d3ba3 [2020-11-28 07:40:10,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/data/85ddc8c1e/4e97126e3ea54ff58fa6fb4d5b30f096 [2020-11-28 07:40:10,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:40:10,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:40:10,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:10,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:40:10,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:40:10,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:10" (1/1) ... [2020-11-28 07:40:10,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0cd5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:10, skipping insertion in model container [2020-11-28 07:40:10,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:40:10" (1/1) ... [2020-11-28 07:40:10,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:40:10,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:40:11,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:11,328 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:40:11,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:40:11,487 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:40:11,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11 WrapperNode [2020-11-28 07:40:11,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:40:11,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:11,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:40:11,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:40:11,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... [2020-11-28 07:40:11,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... [2020-11-28 07:40:11,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:40:11,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:40:11,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:40:11,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:40:11,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... [2020-11-28 07:40:11,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... [2020-11-28 07:40:11,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... [2020-11-28 07:40:11,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... [2020-11-28 07:40:11,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... [2020-11-28 07:40:11,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... [2020-11-28 07:40:11,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... [2020-11-28 07:40:11,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:40:11,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:40:11,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:40:11,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:40:11,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/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 07:40:11,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:40:11,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:40:11,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:40:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:40:14,064 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:40:14,064 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:40:14,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:14 BoogieIcfgContainer [2020-11-28 07:40:14,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:40:14,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:40:14,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:40:14,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:40:14,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:40:10" (1/3) ... [2020-11-28 07:40:14,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8d32af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:14, skipping insertion in model container [2020-11-28 07:40:14,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:40:11" (2/3) ... [2020-11-28 07:40:14,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b8d32af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:40:14, skipping insertion in model container [2020-11-28 07:40:14,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:14" (3/3) ... [2020-11-28 07:40:14,081 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label22.c [2020-11-28 07:40:14,097 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:40:14,103 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:40:14,117 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:40:14,156 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:40:14,157 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:40:14,157 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:40:14,157 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:40:14,157 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:40:14,157 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:40:14,157 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:40:14,157 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:40:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-28 07:40:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 07:40:14,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:14,189 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 07:40:14,190 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:14,200 INFO L82 PathProgramCache]: Analyzing trace with hash -216555705, now seen corresponding path program 1 times [2020-11-28 07:40:14,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:14,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223145520] [2020-11-28 07:40:14,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:14,667 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 07:40:14,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223145520] [2020-11-28 07:40:14,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:14,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:14,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040793516] [2020-11-28 07:40:14,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:14,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:14,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:14,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:14,694 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-28 07:40:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:15,383 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-28 07:40:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:15,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-28 07:40:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:15,410 INFO L225 Difference]: With dead ends: 251 [2020-11-28 07:40:15,414 INFO L226 Difference]: Without dead ends: 163 [2020-11-28 07:40:15,418 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 07:40:15,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-28 07:40:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-28 07:40:15,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-28 07:40:15,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2020-11-28 07:40:15,502 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2020-11-28 07:40:15,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:15,505 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2020-11-28 07:40:15,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2020-11-28 07:40:15,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 07:40:15,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:15,513 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 07:40:15,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:40:15,514 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:15,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:15,517 INFO L82 PathProgramCache]: Analyzing trace with hash -125444574, now seen corresponding path program 1 times [2020-11-28 07:40:15,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:15,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768619837] [2020-11-28 07:40:15,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:15,743 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 07:40:15,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768619837] [2020-11-28 07:40:15,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:15,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:15,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216010351] [2020-11-28 07:40:15,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:15,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:15,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:15,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:15,752 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand 3 states. [2020-11-28 07:40:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:16,366 INFO L93 Difference]: Finished difference Result 405 states and 661 transitions. [2020-11-28 07:40:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:16,368 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-11-28 07:40:16,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:16,370 INFO L225 Difference]: With dead ends: 405 [2020-11-28 07:40:16,371 INFO L226 Difference]: Without dead ends: 243 [2020-11-28 07:40:16,375 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 07:40:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-11-28 07:40:16,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2020-11-28 07:40:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-28 07:40:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 358 transitions. [2020-11-28 07:40:16,402 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 358 transitions. Word has length 85 [2020-11-28 07:40:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:16,405 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 358 transitions. [2020-11-28 07:40:16,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 358 transitions. [2020-11-28 07:40:16,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-28 07:40:16,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:16,412 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-11-28 07:40:16,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:40:16,413 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:16,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:16,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1378947778, now seen corresponding path program 1 times [2020-11-28 07:40:16,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:16,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127983675] [2020-11-28 07:40:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:16,519 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:16,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127983675] [2020-11-28 07:40:16,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:16,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:16,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860141005] [2020-11-28 07:40:16,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:16,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:16,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:16,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:16,526 INFO L87 Difference]: Start difference. First operand 243 states and 358 transitions. Second operand 3 states. [2020-11-28 07:40:17,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:17,049 INFO L93 Difference]: Finished difference Result 725 states and 1071 transitions. [2020-11-28 07:40:17,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:17,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2020-11-28 07:40:17,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:17,053 INFO L225 Difference]: With dead ends: 725 [2020-11-28 07:40:17,054 INFO L226 Difference]: Without dead ends: 483 [2020-11-28 07:40:17,055 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 07:40:17,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-11-28 07:40:17,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-11-28 07:40:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-28 07:40:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 674 transitions. [2020-11-28 07:40:17,092 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 674 transitions. Word has length 95 [2020-11-28 07:40:17,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:17,093 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 674 transitions. [2020-11-28 07:40:17,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 674 transitions. [2020-11-28 07:40:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-11-28 07:40:17,102 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:17,103 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:17,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:40:17,103 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:17,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:17,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1061734978, now seen corresponding path program 1 times [2020-11-28 07:40:17,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:17,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16436164] [2020-11-28 07:40:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:17,229 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:40:17,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16436164] [2020-11-28 07:40:17,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:17,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:17,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610434242] [2020-11-28 07:40:17,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:17,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:17,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:17,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:17,232 INFO L87 Difference]: Start difference. First operand 483 states and 674 transitions. Second operand 3 states. [2020-11-28 07:40:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:17,873 INFO L93 Difference]: Finished difference Result 1125 states and 1634 transitions. [2020-11-28 07:40:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:17,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-11-28 07:40:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:17,879 INFO L225 Difference]: With dead ends: 1125 [2020-11-28 07:40:17,879 INFO L226 Difference]: Without dead ends: 643 [2020-11-28 07:40:17,880 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 07:40:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-28 07:40:17,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-28 07:40:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:40:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 914 transitions. [2020-11-28 07:40:17,914 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 914 transitions. Word has length 110 [2020-11-28 07:40:17,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:17,915 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 914 transitions. [2020-11-28 07:40:17,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 914 transitions. [2020-11-28 07:40:17,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-28 07:40:17,919 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:17,920 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-11-28 07:40:17,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:40:17,921 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:17,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash -237922639, now seen corresponding path program 1 times [2020-11-28 07:40:17,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:17,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664016560] [2020-11-28 07:40:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-28 07:40:18,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664016560] [2020-11-28 07:40:18,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:18,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:18,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408598399] [2020-11-28 07:40:18,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:18,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:18,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:18,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:18,030 INFO L87 Difference]: Start difference. First operand 643 states and 914 transitions. Second operand 3 states. [2020-11-28 07:40:18,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:18,344 INFO L93 Difference]: Finished difference Result 1285 states and 1827 transitions. [2020-11-28 07:40:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:18,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2020-11-28 07:40:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:18,348 INFO L225 Difference]: With dead ends: 1285 [2020-11-28 07:40:18,348 INFO L226 Difference]: Without dead ends: 643 [2020-11-28 07:40:18,349 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 07:40:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-28 07:40:18,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-28 07:40:18,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:40:18,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 864 transitions. [2020-11-28 07:40:18,366 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 864 transitions. Word has length 113 [2020-11-28 07:40:18,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:18,366 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 864 transitions. [2020-11-28 07:40:18,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:18,366 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 864 transitions. [2020-11-28 07:40:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-11-28 07:40:18,369 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:18,369 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-28 07:40:18,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:40:18,369 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:18,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:18,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1589626076, now seen corresponding path program 1 times [2020-11-28 07:40:18,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:18,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553936284] [2020-11-28 07:40:18,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-11-28 07:40:18,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553936284] [2020-11-28 07:40:18,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:18,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:40:18,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342166662] [2020-11-28 07:40:18,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:40:18,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:18,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:40:18,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:40:18,470 INFO L87 Difference]: Start difference. First operand 643 states and 864 transitions. Second operand 5 states. [2020-11-28 07:40:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:19,259 INFO L93 Difference]: Finished difference Result 1558 states and 2035 transitions. [2020-11-28 07:40:19,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:40:19,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-11-28 07:40:19,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:19,265 INFO L225 Difference]: With dead ends: 1558 [2020-11-28 07:40:19,265 INFO L226 Difference]: Without dead ends: 833 [2020-11-28 07:40:19,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:40:19,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-11-28 07:40:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 643. [2020-11-28 07:40:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:40:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 800 transitions. [2020-11-28 07:40:19,285 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 800 transitions. Word has length 117 [2020-11-28 07:40:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:19,285 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 800 transitions. [2020-11-28 07:40:19,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:40:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 800 transitions. [2020-11-28 07:40:19,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-11-28 07:40:19,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:19,288 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-11-28 07:40:19,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:40:19,289 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:19,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:19,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1459429389, now seen corresponding path program 1 times [2020-11-28 07:40:19,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:19,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101282454] [2020-11-28 07:40:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:19,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:19,347 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-28 07:40:19,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101282454] [2020-11-28 07:40:19,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:19,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:19,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521190045] [2020-11-28 07:40:19,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:19,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:19,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:19,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:19,350 INFO L87 Difference]: Start difference. First operand 643 states and 800 transitions. Second operand 3 states. [2020-11-28 07:40:19,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:19,749 INFO L93 Difference]: Finished difference Result 1765 states and 2166 transitions. [2020-11-28 07:40:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:19,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-11-28 07:40:19,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:19,756 INFO L225 Difference]: With dead ends: 1765 [2020-11-28 07:40:19,756 INFO L226 Difference]: Without dead ends: 1043 [2020-11-28 07:40:19,758 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 07:40:19,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2020-11-28 07:40:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1043. [2020-11-28 07:40:19,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-11-28 07:40:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1205 transitions. [2020-11-28 07:40:19,810 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1205 transitions. Word has length 128 [2020-11-28 07:40:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:19,811 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1205 transitions. [2020-11-28 07:40:19,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:19,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1205 transitions. [2020-11-28 07:40:19,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-28 07:40:19,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:19,814 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-11-28 07:40:19,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:40:19,815 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:19,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:19,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1011532848, now seen corresponding path program 1 times [2020-11-28 07:40:19,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:19,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802231678] [2020-11-28 07:40:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 07:40:19,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802231678] [2020-11-28 07:40:19,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:19,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:19,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991650558] [2020-11-28 07:40:19,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:19,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:19,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:19,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:19,930 INFO L87 Difference]: Start difference. First operand 1043 states and 1205 transitions. Second operand 3 states. [2020-11-28 07:40:20,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:20,320 INFO L93 Difference]: Finished difference Result 2085 states and 2408 transitions. [2020-11-28 07:40:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:20,322 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2020-11-28 07:40:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:20,329 INFO L225 Difference]: With dead ends: 2085 [2020-11-28 07:40:20,329 INFO L226 Difference]: Without dead ends: 963 [2020-11-28 07:40:20,331 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 07:40:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-11-28 07:40:20,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 883. [2020-11-28 07:40:20,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2020-11-28 07:40:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 985 transitions. [2020-11-28 07:40:20,355 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 985 transitions. Word has length 146 [2020-11-28 07:40:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:20,356 INFO L481 AbstractCegarLoop]: Abstraction has 883 states and 985 transitions. [2020-11-28 07:40:20,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 985 transitions. [2020-11-28 07:40:20,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-11-28 07:40:20,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:20,360 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-28 07:40:20,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:40:20,360 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:20,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:20,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1456251574, now seen corresponding path program 1 times [2020-11-28 07:40:20,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:20,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485541811] [2020-11-28 07:40:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 07:40:20,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485541811] [2020-11-28 07:40:20,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:20,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:40:20,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43498558] [2020-11-28 07:40:20,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:20,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:20,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:20,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:20,513 INFO L87 Difference]: Start difference. First operand 883 states and 985 transitions. Second operand 3 states. [2020-11-28 07:40:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:20,959 INFO L93 Difference]: Finished difference Result 2005 states and 2229 transitions. [2020-11-28 07:40:20,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:20,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2020-11-28 07:40:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:20,964 INFO L225 Difference]: With dead ends: 2005 [2020-11-28 07:40:20,964 INFO L226 Difference]: Without dead ends: 643 [2020-11-28 07:40:20,966 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 07:40:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-11-28 07:40:20,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-11-28 07:40:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-28 07:40:20,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 692 transitions. [2020-11-28 07:40:20,985 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 692 transitions. Word has length 170 [2020-11-28 07:40:20,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:20,985 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 692 transitions. [2020-11-28 07:40:20,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:20,985 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 692 transitions. [2020-11-28 07:40:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-11-28 07:40:20,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:40:20,989 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:20,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:40:20,989 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:20,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1636091487, now seen corresponding path program 1 times [2020-11-28 07:40:20,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:20,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617310452] [2020-11-28 07:40:20,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:40:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-11-28 07:40:21,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617310452] [2020-11-28 07:40:21,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:40:21,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:40:21,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267497789] [2020-11-28 07:40:21,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:40:21,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:40:21,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:40:21,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:40:21,258 INFO L87 Difference]: Start difference. First operand 643 states and 692 transitions. Second operand 3 states. [2020-11-28 07:40:21,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:40:21,414 INFO L93 Difference]: Finished difference Result 643 states and 692 transitions. [2020-11-28 07:40:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:40:21,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-11-28 07:40:21,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:40:21,416 INFO L225 Difference]: With dead ends: 643 [2020-11-28 07:40:21,416 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:40:21,417 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 07:40:21,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:40:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:40:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:40:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:40:21,417 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 215 [2020-11-28 07:40:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:40:21,418 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:40:21,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:40:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:40:21,418 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:40:21,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:40:21,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:40:21,743 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-11-28 07:40:21,916 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-11-28 07:40:21,918 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-28 07:40:21,919 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-28 07:40:21,920 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-28 07:40:21,920 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-28 07:40:21,920 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-28 07:40:21,920 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-28 07:40:21,920 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-28 07:40:21,920 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-28 07:40:21,921 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-28 07:40:21,922 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L469-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L472-1(lines 39 608) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-28 07:40:21,923 INFO L274 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-11-28 07:40:21,924 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-28 07:40:21,924 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-28 07:40:21,924 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-28 07:40:21,924 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse5 (<= ~a28~0 7)) (.cse6 (= ~a11~0 1)) (.cse3 (<= ~a28~0 10)) (.cse0 (= ~a19~0 1)) (.cse1 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse5 .cse2) (and (<= 9 ~a28~0) .cse4 .cse2 .cse6 .cse3) (and .cse1 .cse2 .cse6 .cse3) (and .cse5 .cse2 .cse6) (and (<= 8 ~a17~0) .cse2 .cse3) (and .cse0 .cse1 .cse4 .cse2))) [2020-11-28 07:40:21,924 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-28 07:40:21,924 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-28 07:40:21,924 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-28 07:40:21,924 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-28 07:40:21,925 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-28 07:40:21,925 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-28 07:40:21,925 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-28 07:40:21,925 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-28 07:40:21,925 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:40:21,925 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-28 07:40:21,925 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-28 07:40:21,926 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse5 (<= ~a28~0 7)) (.cse6 (= ~a11~0 1)) (.cse3 (<= ~a28~0 10)) (.cse0 (= ~a19~0 1)) (.cse1 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse5 .cse2) (and (<= 9 ~a28~0) .cse4 .cse2 .cse6 .cse3) (and .cse1 .cse2 .cse6 .cse3) (and .cse5 .cse2 .cse6) (and (<= 8 ~a17~0) .cse2 .cse3) (and .cse0 .cse1 .cse4 .cse2))) [2020-11-28 07:40:21,927 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-28 07:40:21,927 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-28 07:40:21,927 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-28 07:40:21,927 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-28 07:40:21,927 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-28 07:40:21,927 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-28 07:40:21,928 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-28 07:40:21,928 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-28 07:40:21,928 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-28 07:40:21,928 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-28 07:40:21,928 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-28 07:40:21,928 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-28 07:40:21,928 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-28 07:40:21,929 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-28 07:40:21,929 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-28 07:40:21,929 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-28 07:40:21,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:21 BoogieIcfgContainer [2020-11-28 07:40:21,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:21,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:21,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:21,956 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:21,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:40:14" (3/4) ... [2020-11-28 07:40:21,960 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:40:21,981 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2020-11-28 07:40:21,983 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 07:40:21,985 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:40:21,987 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:40:22,160 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_93c8440c-65fb-4b71-84f2-4067be39d6ba/bin/utaipan/witness.graphml [2020-11-28 07:40:22,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:22,162 INFO L168 Benchmark]: Toolchain (without parser) took 11323.65 ms. Allocated memory was 115.3 MB in the beginning and 264.2 MB in the end (delta: 148.9 MB). Free memory was 86.7 MB in the beginning and 114.7 MB in the end (delta: -28.1 MB). Peak memory consumption was 119.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,162 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:22,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.58 ms. Allocated memory is still 115.3 MB. Free memory was 86.5 MB in the beginning and 74.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,163 INFO L168 Benchmark]: Boogie Procedure Inliner took 98.69 ms. Allocated memory is still 115.3 MB. Free memory was 74.5 MB in the beginning and 69.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,164 INFO L168 Benchmark]: Boogie Preprocessor took 56.56 ms. Allocated memory is still 115.3 MB. Free memory was 69.1 MB in the beginning and 64.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,164 INFO L168 Benchmark]: RCFGBuilder took 2408.75 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 64.6 MB in the beginning and 109.3 MB in the end (delta: -44.7 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,165 INFO L168 Benchmark]: TraceAbstraction took 7883.21 ms. Allocated memory was 167.8 MB in the beginning and 264.2 MB in the end (delta: 96.5 MB). Free memory was 109.3 MB in the beginning and 130.5 MB in the end (delta: -21.1 MB). Peak memory consumption was 76.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,165 INFO L168 Benchmark]: Witness Printer took 205.35 ms. Allocated memory is still 264.2 MB. Free memory was 130.5 MB in the beginning and 114.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:22,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 661.58 ms. Allocated memory is still 115.3 MB. Free memory was 86.5 MB in the beginning and 74.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 98.69 ms. Allocated memory is still 115.3 MB. Free memory was 74.5 MB in the beginning and 69.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.56 ms. Allocated memory is still 115.3 MB. Free memory was 69.1 MB in the beginning and 64.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2408.75 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 64.6 MB in the beginning and 109.3 MB in the end (delta: -44.7 MB). Peak memory consumption was 51.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7883.21 ms. Allocated memory was 167.8 MB in the beginning and 264.2 MB in the end (delta: 96.5 MB). Free memory was 109.3 MB in the beginning and 130.5 MB in the end (delta: -21.1 MB). Peak memory consumption was 76.4 MB. Max. memory is 16.1 GB. * Witness Printer took 205.35 ms. Allocated memory is still 264.2 MB. Free memory was 130.5 MB in the beginning and 114.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 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 && 10 <= a28) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((9 <= a28 && a25 == 1) && a17 <= 8) && a11 == 1) && a28 <= 10)) || (((10 <= a28 && a17 <= 8) && a11 == 1) && a28 <= 10)) || ((a28 <= 7 && a17 <= 8) && a11 == 1)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 10 <= a28) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((a19 == 1 && 10 <= a28) && a17 <= 8) && a28 <= 10) || (((a19 == 1 && a25 == 1) && a28 <= 7) && a17 <= 8)) || ((((9 <= a28 && a25 == 1) && a17 <= 8) && a11 == 1) && a28 <= 10)) || (((10 <= a28 && a17 <= 8) && a11 == 1) && a28 <= 10)) || ((a28 <= 7 && a17 <= 8) && a11 == 1)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 10 <= a28) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 655 SDtfs, 698 SDslu, 58 SDs, 0 SdLazy, 2196 SolverSat, 615 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1043occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 270 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 45 NumberOfFragments, 179 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1416 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 268 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 1259 NumberOfCodeBlocks, 1259 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1249 ConstructedInterpolants, 0 QuantifiedInterpolants, 363955 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 735/735 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...