./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.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_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/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 90b0cdc2fc90434e0a4f6271fb161422e9b25aee ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:06,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:06,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:06,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:06,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:06,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:06,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:06,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:06,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:06,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:06,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:06,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:06,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:06,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:06,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:06,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:06,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:06,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:06,652 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:06,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:06,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:06,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:06,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:06,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:06,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:06,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:06,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:06,682 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:06,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:06,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:06,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:06,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:06,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:06,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:06,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:06,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:06,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:06,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:06,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:06,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:06,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:06,700 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:06,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:06,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:06,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:06,748 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:06,748 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:06,749 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:06,749 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:06,749 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:06,749 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:06,750 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:06,751 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:06,751 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:06,751 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:06,752 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:06,752 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:06,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:06,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:06,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:06,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:06,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:06,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:06,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:06,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:06,755 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:06,755 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:06,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:06,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:06,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:06,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:06,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:06,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:06,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:06,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:06,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:06,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:06,758 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:06,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:06,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:06,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:06,759 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:06,760 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_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90b0cdc2fc90434e0a4f6271fb161422e9b25aee [2020-11-22 13:05:07,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:07,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:07,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:07,073 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:07,074 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:07,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2020-11-22 13:05:07,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/data/5dadf4b62/fbf2165e80e1405eb623989067cd4e08/FLAG42793a4e5 [2020-11-22 13:05:07,773 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:07,773 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/sv-benchmarks/c/eca-rers2012/Problem02_label04.c [2020-11-22 13:05:07,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/data/5dadf4b62/fbf2165e80e1405eb623989067cd4e08/FLAG42793a4e5 [2020-11-22 13:05:08,038 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/data/5dadf4b62/fbf2165e80e1405eb623989067cd4e08 [2020-11-22 13:05:08,041 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:08,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:08,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:08,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:08,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:08,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@207ef1fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08, skipping insertion in model container [2020-11-22 13:05:08,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:08,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:08,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:08,581 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:08,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:08,839 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:08,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08 WrapperNode [2020-11-22 13:05:08,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:08,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:08,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:08,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:08,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,938 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:08,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:08,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:08,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:08,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:08,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... [2020-11-22 13:05:09,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:09,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:09,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:09,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:09,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:09,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:11,903 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:11,904 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:05:11,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:11 BoogieIcfgContainer [2020-11-22 13:05:11,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:11,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:11,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:11,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:11,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:08" (1/3) ... [2020-11-22 13:05:11,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2aa03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:11, skipping insertion in model container [2020-11-22 13:05:11,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:08" (2/3) ... [2020-11-22 13:05:11,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e2aa03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:11, skipping insertion in model container [2020-11-22 13:05:11,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:11" (3/3) ... [2020-11-22 13:05:11,916 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label04.c [2020-11-22 13:05:11,926 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:11,930 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:11,941 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:11,973 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:11,973 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:11,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:11,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:11,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:11,974 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:11,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:11,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-11-22 13:05:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-22 13:05:12,005 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:12,006 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] [2020-11-22 13:05:12,006 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:12,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:12,012 INFO L82 PathProgramCache]: Analyzing trace with hash -216550518, now seen corresponding path program 1 times [2020-11-22 13:05:12,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:12,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300520351] [2020-11-22 13:05:12,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:12,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:12,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300520351] [2020-11-22 13:05:12,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:12,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:12,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347748104] [2020-11-22 13:05:12,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:12,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:12,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:12,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:12,492 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-11-22 13:05:13,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:13,359 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-11-22 13:05:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:13,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-11-22 13:05:13,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:13,376 INFO L225 Difference]: With dead ends: 251 [2020-11-22 13:05:13,377 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 13:05:13,380 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 [2020-11-22 13:05:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 13:05:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 13:05:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 13:05:13,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2020-11-22 13:05:13,434 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2020-11-22 13:05:13,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:13,435 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2020-11-22 13:05:13,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:13,435 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2020-11-22 13:05:13,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-22 13:05:13,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:13,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:13,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:13,440 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:13,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:13,441 INFO L82 PathProgramCache]: Analyzing trace with hash -215862444, now seen corresponding path program 1 times [2020-11-22 13:05:13,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:13,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235628383] [2020-11-22 13:05:13,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:13,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235628383] [2020-11-22 13:05:13,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:13,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:13,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099484192] [2020-11-22 13:05:13,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:13,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:13,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:13,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:13,535 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2020-11-22 13:05:13,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:13,942 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2020-11-22 13:05:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:13,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-22 13:05:13,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:13,945 INFO L225 Difference]: With dead ends: 325 [2020-11-22 13:05:13,945 INFO L226 Difference]: Without dead ends: 163 [2020-11-22 13:05:13,947 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 [2020-11-22 13:05:13,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-11-22 13:05:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-11-22 13:05:13,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-22 13:05:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2020-11-22 13:05:13,980 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2020-11-22 13:05:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:13,982 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2020-11-22 13:05:13,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:13,983 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2020-11-22 13:05:13,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-22 13:05:13,987 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:13,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:13,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:05:13,988 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:13,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:13,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1467813991, now seen corresponding path program 1 times [2020-11-22 13:05:13,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:13,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346043922] [2020-11-22 13:05:13,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:14,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346043922] [2020-11-22 13:05:14,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:14,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:14,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063403295] [2020-11-22 13:05:14,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:14,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:14,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:14,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:14,134 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2020-11-22 13:05:14,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:14,731 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2020-11-22 13:05:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:14,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-22 13:05:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:14,736 INFO L225 Difference]: With dead ends: 485 [2020-11-22 13:05:14,736 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 13:05:14,737 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 [2020-11-22 13:05:14,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 13:05:14,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2020-11-22 13:05:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-11-22 13:05:14,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 373 transitions. [2020-11-22 13:05:14,764 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 373 transitions. Word has length 98 [2020-11-22 13:05:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:14,765 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 373 transitions. [2020-11-22 13:05:14,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:14,765 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 373 transitions. [2020-11-22 13:05:14,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-22 13:05:14,768 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:14,769 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:14,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:05:14,769 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1373204098, now seen corresponding path program 1 times [2020-11-22 13:05:14,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:14,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435157893] [2020-11-22 13:05:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:14,842 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:14,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435157893] [2020-11-22 13:05:14,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:14,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:14,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485530176] [2020-11-22 13:05:14,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:14,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:14,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:14,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:14,845 INFO L87 Difference]: Start difference. First operand 243 states and 373 transitions. Second operand 3 states. [2020-11-22 13:05:15,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:15,306 INFO L93 Difference]: Finished difference Result 565 states and 885 transitions. [2020-11-22 13:05:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:15,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-22 13:05:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:15,309 INFO L225 Difference]: With dead ends: 565 [2020-11-22 13:05:15,309 INFO L226 Difference]: Without dead ends: 323 [2020-11-22 13:05:15,310 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 [2020-11-22 13:05:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-11-22 13:05:15,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-11-22 13:05:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-11-22 13:05:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 493 transitions. [2020-11-22 13:05:15,346 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 493 transitions. Word has length 103 [2020-11-22 13:05:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:15,347 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 493 transitions. [2020-11-22 13:05:15,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:15,347 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 493 transitions. [2020-11-22 13:05:15,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-11-22 13:05:15,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:15,351 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:15,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:05:15,351 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:15,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:15,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1280995148, now seen corresponding path program 1 times [2020-11-22 13:05:15,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:15,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205211520] [2020-11-22 13:05:15,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:15,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205211520] [2020-11-22 13:05:15,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601501020] [2020-11-22 13:05:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:15,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:05:15,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 13:05:15,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:16,045 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 13:05:16,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:16,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 13:05:16,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724324552] [2020-11-22 13:05:16,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:16,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:16,054 INFO L87 Difference]: Start difference. First operand 323 states and 493 transitions. Second operand 3 states. [2020-11-22 13:05:16,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:16,584 INFO L93 Difference]: Finished difference Result 885 states and 1336 transitions. [2020-11-22 13:05:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:16,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-11-22 13:05:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:16,588 INFO L225 Difference]: With dead ends: 885 [2020-11-22 13:05:16,589 INFO L226 Difference]: Without dead ends: 563 [2020-11-22 13:05:16,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-11-22 13:05:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 483. [2020-11-22 13:05:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-11-22 13:05:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 683 transitions. [2020-11-22 13:05:16,629 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 683 transitions. Word has length 107 [2020-11-22 13:05:16,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:16,629 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 683 transitions. [2020-11-22 13:05:16,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:16,630 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 683 transitions. [2020-11-22 13:05:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-22 13:05:16,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:16,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:16,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:16,848 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:16,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:16,849 INFO L82 PathProgramCache]: Analyzing trace with hash 441517974, now seen corresponding path program 1 times [2020-11-22 13:05:16,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:16,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915923165] [2020-11-22 13:05:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-22 13:05:16,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915923165] [2020-11-22 13:05:16,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:16,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:05:16,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527520197] [2020-11-22 13:05:16,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:16,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:16,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:16,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:16,940 INFO L87 Difference]: Start difference. First operand 483 states and 683 transitions. Second operand 3 states. [2020-11-22 13:05:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:17,434 INFO L93 Difference]: Finished difference Result 1205 states and 1716 transitions. [2020-11-22 13:05:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:17,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-22 13:05:17,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:17,440 INFO L225 Difference]: With dead ends: 1205 [2020-11-22 13:05:17,440 INFO L226 Difference]: Without dead ends: 723 [2020-11-22 13:05:17,441 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 [2020-11-22 13:05:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-22 13:05:17,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-11-22 13:05:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-22 13:05:17,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 954 transitions. [2020-11-22 13:05:17,475 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 954 transitions. Word has length 111 [2020-11-22 13:05:17,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:17,477 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 954 transitions. [2020-11-22 13:05:17,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:17,477 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 954 transitions. [2020-11-22 13:05:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-11-22 13:05:17,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:17,481 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-11-22 13:05:17,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:05:17,482 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:17,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1265125640, now seen corresponding path program 1 times [2020-11-22 13:05:17,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:17,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244128606] [2020-11-22 13:05:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-22 13:05:17,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244128606] [2020-11-22 13:05:17,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:17,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:17,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486426221] [2020-11-22 13:05:17,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:17,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:17,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:17,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:17,617 INFO L87 Difference]: Start difference. First operand 723 states and 954 transitions. Second operand 3 states. [2020-11-22 13:05:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:18,123 INFO L93 Difference]: Finished difference Result 1605 states and 2097 transitions. [2020-11-22 13:05:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:18,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-11-22 13:05:18,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:18,129 INFO L225 Difference]: With dead ends: 1605 [2020-11-22 13:05:18,129 INFO L226 Difference]: Without dead ends: 723 [2020-11-22 13:05:18,131 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 [2020-11-22 13:05:18,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-11-22 13:05:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 643. [2020-11-22 13:05:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-11-22 13:05:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 784 transitions. [2020-11-22 13:05:18,153 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 784 transitions. Word has length 171 [2020-11-22 13:05:18,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:18,153 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 784 transitions. [2020-11-22 13:05:18,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:18,154 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 784 transitions. [2020-11-22 13:05:18,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-11-22 13:05:18,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:18,157 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-11-22 13:05:18,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:05:18,157 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:18,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:18,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1466311697, now seen corresponding path program 1 times [2020-11-22 13:05:18,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:18,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493996938] [2020-11-22 13:05:18,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-11-22 13:05:18,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493996938] [2020-11-22 13:05:18,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:18,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:18,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368364950] [2020-11-22 13:05:18,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:18,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:18,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:18,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:18,251 INFO L87 Difference]: Start difference. First operand 643 states and 784 transitions. Second operand 3 states. [2020-11-22 13:05:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:18,785 INFO L93 Difference]: Finished difference Result 1605 states and 1979 transitions. [2020-11-22 13:05:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:18,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-11-22 13:05:18,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:18,791 INFO L225 Difference]: With dead ends: 1605 [2020-11-22 13:05:18,791 INFO L226 Difference]: Without dead ends: 803 [2020-11-22 13:05:18,793 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 [2020-11-22 13:05:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-11-22 13:05:18,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 723. [2020-11-22 13:05:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-11-22 13:05:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 810 transitions. [2020-11-22 13:05:18,815 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 810 transitions. Word has length 181 [2020-11-22 13:05:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:18,815 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 810 transitions. [2020-11-22 13:05:18,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 810 transitions. [2020-11-22 13:05:18,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-11-22 13:05:18,819 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:18,819 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:18,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:05:18,820 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:18,820 INFO L82 PathProgramCache]: Analyzing trace with hash -7923098, now seen corresponding path program 1 times [2020-11-22 13:05:18,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:18,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255399001] [2020-11-22 13:05:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:18,998 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 142 proven. 8 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-11-22 13:05:18,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255399001] [2020-11-22 13:05:18,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726706901] [2020-11-22 13:05:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:19,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:05:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-11-22 13:05:19,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-11-22 13:05:19,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 13:05:19,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-11-22 13:05:19,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050472867] [2020-11-22 13:05:19,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:19,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:19,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:19,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:19,330 INFO L87 Difference]: Start difference. First operand 723 states and 810 transitions. Second operand 3 states. [2020-11-22 13:05:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:19,676 INFO L93 Difference]: Finished difference Result 1683 states and 1884 transitions. [2020-11-22 13:05:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:19,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2020-11-22 13:05:19,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:19,677 INFO L225 Difference]: With dead ends: 1683 [2020-11-22 13:05:19,677 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:19,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:05:19,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:19,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:19,679 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 217 [2020-11-22 13:05:19,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:19,680 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:19,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:19,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:19,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:19,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:20,056 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2020-11-22 13:05:20,174 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 25 [2020-11-22 13:05:20,178 INFO L274 CegarLoopResult]: For program point L499-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 13:05:20,178 INFO L274 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-11-22 13:05:20,178 INFO L274 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-11-22 13:05:20,178 INFO L274 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-11-22 13:05:20,178 INFO L274 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-11-22 13:05:20,178 INFO L274 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-11-22 13:05:20,178 INFO L274 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-11-22 13:05:20,178 INFO L274 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-11-22 13:05:20,179 INFO L274 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-11-22 13:05:20,180 INFO L274 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-11-22 13:05:20,181 INFO L274 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-11-22 13:05:20,182 INFO L274 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-11-22 13:05:20,183 INFO L274 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-11-22 13:05:20,183 INFO L274 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-11-22 13:05:20,183 INFO L274 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-11-22 13:05:20,183 INFO L274 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-11-22 13:05:20,183 INFO L274 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-11-22 13:05:20,183 INFO L274 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-11-22 13:05:20,183 INFO L274 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-11-22 13:05:20,184 INFO L270 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2020-11-22 13:05:20,184 INFO L274 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-11-22 13:05:20,184 INFO L274 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-11-22 13:05:20,184 INFO L277 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-11-22 13:05:20,184 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-11-22 13:05:20,184 INFO L274 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-11-22 13:05:20,184 INFO L274 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-11-22 13:05:20,184 INFO L274 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-11-22 13:05:20,184 INFO L274 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-11-22 13:05:20,184 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:20,185 INFO L274 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-11-22 13:05:20,185 INFO L274 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-11-22 13:05:20,185 INFO L270 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse3 (<= 8 ~a17~0)) (.cse4 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8))) (or (and (<= 10 ~a28~0) .cse0 .cse1) (and (<= ~a19~0 0) .cse2 .cse1) (and .cse3 .cse2 .cse1) (and (<= ~a28~0 7) .cse2) (and .cse4 .cse0 .cse1) (and (= ~a19~0 1) .cse3 .cse4 .cse2))) [2020-11-22 13:05:20,185 INFO L274 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-11-22 13:05:20,185 INFO L274 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-11-22 13:05:20,185 INFO L274 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-11-22 13:05:20,185 INFO L274 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-11-22 13:05:20,185 INFO L274 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L496-1(lines 39 608) no Hoare annotation was computed. [2020-11-22 13:05:20,186 INFO L274 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-11-22 13:05:20,187 INFO L274 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-11-22 13:05:20,187 INFO L274 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-11-22 13:05:20,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:20 BoogieIcfgContainer [2020-11-22 13:05:20,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:20,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:20,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:20,224 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:20,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:11" (3/4) ... [2020-11-22 13:05:20,227 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:20,255 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-11-22 13:05:20,256 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 13:05:20,258 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 13:05:20,260 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:05:20,434 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7f22f8f-17bd-4632-bfb7-4638d9eeb0c0/bin/utaipan/witness.graphml [2020-11-22 13:05:20,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:20,435 INFO L168 Benchmark]: Toolchain (without parser) took 12390.99 ms. Allocated memory was 96.5 MB in the beginning and 260.0 MB in the end (delta: 163.6 MB). Free memory was 66.9 MB in the beginning and 120.2 MB in the end (delta: -53.3 MB). Peak memory consumption was 109.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,436 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 96.5 MB. Free memory was 55.4 MB in the beginning and 55.3 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:20,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 798.15 ms. Allocated memory is still 96.5 MB. Free memory was 66.9 MB in the beginning and 57.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,440 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.51 ms. Allocated memory is still 96.5 MB. Free memory was 57.7 MB in the beginning and 52.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,440 INFO L168 Benchmark]: Boogie Preprocessor took 65.95 ms. Allocated memory is still 96.5 MB. Free memory was 52.5 MB in the beginning and 47.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,441 INFO L168 Benchmark]: RCFGBuilder took 2901.76 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 47.9 MB in the beginning and 77.4 MB in the end (delta: -29.5 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,441 INFO L168 Benchmark]: TraceAbstraction took 8314.58 ms. Allocated memory was 127.9 MB in the beginning and 260.0 MB in the end (delta: 132.1 MB). Free memory was 76.3 MB in the beginning and 135.8 MB in the end (delta: -59.5 MB). Peak memory consumption was 73.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,441 INFO L168 Benchmark]: Witness Printer took 210.78 ms. Allocated memory is still 260.0 MB. Free memory was 135.8 MB in the beginning and 120.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:20,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 96.5 MB. Free memory was 55.4 MB in the beginning and 55.3 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 798.15 ms. Allocated memory is still 96.5 MB. Free memory was 66.9 MB in the beginning and 57.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.51 ms. Allocated memory is still 96.5 MB. Free memory was 57.7 MB in the beginning and 52.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.95 ms. Allocated memory is still 96.5 MB. Free memory was 52.5 MB in the beginning and 47.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2901.76 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 47.9 MB in the beginning and 77.4 MB in the end (delta: -29.5 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8314.58 ms. Allocated memory was 127.9 MB in the beginning and 260.0 MB in the end (delta: 132.1 MB). Free memory was 76.3 MB in the beginning and 135.8 MB in the end (delta: -59.5 MB). Peak memory consumption was 73.6 MB. Max. memory is 16.1 GB. * Witness Printer took 210.78 ms. Allocated memory is still 260.0 MB. Free memory was 135.8 MB in the beginning and 120.2 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: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((10 <= a28 && a17 <= 7) && a28 <= 10) || ((a19 <= 0 && a17 <= 8) && a28 <= 10)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (a28 <= 7 && a17 <= 8)) || ((a25 == 1 && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && 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: 7.9s, OverallIterations: 9, TraceHistogramMax: 7, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 640 SDtfs, 563 SDslu, 40 SDs, 0 SdLazy, 1844 SolverSat, 491 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 669 GetRequests, 653 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=723occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 320 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 123 HoareAnnotationTreeSize, 3 FomulaSimplifications, 610 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 1483 NumberOfCodeBlocks, 1483 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1794 ConstructedInterpolants, 0 QuantifiedInterpolants, 669196 SizeOfPredicates, 1 NumberOfNonLiveVariables, 748 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 1494/1518 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...