./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.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_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/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 b121c0464c557212174d50c3c43859d1b7172e79 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 12:58:50,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:58:50,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:58:50,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:58:50,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:58:50,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:58:50,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:58:50,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:58:50,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:58:50,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:58:50,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:58:50,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:58:50,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:58:50,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:58:50,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:58:50,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:58:50,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:58:50,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:58:50,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:58:50,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:58:50,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:58:50,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:58:50,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:58:50,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:58:50,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:58:50,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:58:50,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:58:50,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:58:50,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:58:50,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:58:50,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:58:50,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:58:50,755 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:58:50,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:58:50,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:58:50,758 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:58:50,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:58:50,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:58:50,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:58:50,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:58:50,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:58:50,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:58:50,804 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:58:50,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:58:50,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:58:50,805 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:58:50,806 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:58:50,806 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:58:50,806 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:58:50,806 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:58:50,807 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:58:50,807 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:58:50,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:58:50,807 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:58:50,807 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:58:50,808 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:58:50,808 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:58:50,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:58:50,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:58:50,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:58:50,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:58:50,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:58:50,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:58:50,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:58:50,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:58:50,810 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:58:50,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:58:50,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:58:50,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:58:50,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:58:50,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:58:50,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:58:50,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:58:50,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:58:50,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:58:50,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:58:50,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:58:50,813 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:58:50,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:58:50,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:58:50,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:58:50,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:58:50,814 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_c16204fd-3c62-40cc-b24a-8454b1061376/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b121c0464c557212174d50c3c43859d1b7172e79 [2020-11-22 12:58:51,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:58:51,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:58:51,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:58:51,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:58:51,137 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:58:51,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2020-11-22 12:58:51,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/data/084d4ce30/3dfc2a7f91344e2dad6877556cd77e43/FLAG365d9c2db [2020-11-22 12:58:51,692 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:58:51,692 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/sv-benchmarks/c/eca-rers2012/Problem01_label23.c [2020-11-22 12:58:51,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/data/084d4ce30/3dfc2a7f91344e2dad6877556cd77e43/FLAG365d9c2db [2020-11-22 12:58:52,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/data/084d4ce30/3dfc2a7f91344e2dad6877556cd77e43 [2020-11-22 12:58:52,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:58:52,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:58:52,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:52,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:58:52,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:58:52,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8d86e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52, skipping insertion in model container [2020-11-22 12:58:52,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:58:52,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:58:52,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:52,481 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:58:52,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:58:52,629 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:58:52,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52 WrapperNode [2020-11-22 12:58:52,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:58:52,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:52,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:58:52,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:58:52,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:58:52,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:58:52,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:58:52,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:58:52,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... [2020-11-22 12:58:52,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:58:52,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:58:52,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:58:52,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:58:52,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/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 12:58:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:58:52,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:58:52,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:58:52,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:58:55,680 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:58:55,681 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 12:58:55,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:55 BoogieIcfgContainer [2020-11-22 12:58:55,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:58:55,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:58:55,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:58:55,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:58:55,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:58:52" (1/3) ... [2020-11-22 12:58:55,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441079a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:55, skipping insertion in model container [2020-11-22 12:58:55,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:58:52" (2/3) ... [2020-11-22 12:58:55,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441079a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:58:55, skipping insertion in model container [2020-11-22 12:58:55,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:55" (3/3) ... [2020-11-22 12:58:55,692 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label23.c [2020-11-22 12:58:55,705 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:58:55,709 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:58:55,721 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:58:55,751 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:58:55,751 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:58:55,751 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:58:55,752 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:58:55,752 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:58:55,752 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:58:55,753 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:58:55,753 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:58:55,774 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-22 12:58:55,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-22 12:58:55,784 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:55,785 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] [2020-11-22 12:58:55,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:55,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2004381484, now seen corresponding path program 1 times [2020-11-22 12:58:55,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:55,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709710487] [2020-11-22 12:58:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:56,213 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 12:58:56,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709710487] [2020-11-22 12:58:56,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:56,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:58:56,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463757727] [2020-11-22 12:58:56,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:56,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:56,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:56,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:56,235 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-22 12:58:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:56,888 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-22 12:58:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:56,889 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-22 12:58:56,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:56,908 INFO L225 Difference]: With dead ends: 224 [2020-11-22 12:58:56,912 INFO L226 Difference]: Without dead ends: 145 [2020-11-22 12:58:56,917 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 12:58:56,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-22 12:58:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-22 12:58:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-22 12:58:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 265 transitions. [2020-11-22 12:58:56,984 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 265 transitions. Word has length 71 [2020-11-22 12:58:56,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:56,985 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 265 transitions. [2020-11-22 12:58:56,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:56,985 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 265 transitions. [2020-11-22 12:58:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-22 12:58:56,989 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:56,989 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:58:56,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:58:56,989 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:56,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:56,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1988672831, now seen corresponding path program 1 times [2020-11-22 12:58:56,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:56,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086208883] [2020-11-22 12:58:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:57,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:57,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086208883] [2020-11-22 12:58:57,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:57,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:58:57,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174764031] [2020-11-22 12:58:57,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:57,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:57,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:57,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:57,051 INFO L87 Difference]: Start difference. First operand 145 states and 265 transitions. Second operand 3 states. [2020-11-22 12:58:57,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:57,591 INFO L93 Difference]: Finished difference Result 431 states and 792 transitions. [2020-11-22 12:58:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:57,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-11-22 12:58:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:57,595 INFO L225 Difference]: With dead ends: 431 [2020-11-22 12:58:57,595 INFO L226 Difference]: Without dead ends: 287 [2020-11-22 12:58:57,596 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 12:58:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-22 12:58:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-22 12:58:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-22 12:58:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 486 transitions. [2020-11-22 12:58:57,631 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 486 transitions. Word has length 77 [2020-11-22 12:58:57,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:57,632 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 486 transitions. [2020-11-22 12:58:57,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:57,632 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 486 transitions. [2020-11-22 12:58:57,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-22 12:58:57,636 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:57,636 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:58:57,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:58:57,636 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:57,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:57,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2043357853, now seen corresponding path program 1 times [2020-11-22 12:58:57,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:57,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807744253] [2020-11-22 12:58:57,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:57,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807744253] [2020-11-22 12:58:57,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:57,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:58:57,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67206102] [2020-11-22 12:58:57,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:57,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:57,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:57,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:57,781 INFO L87 Difference]: Start difference. First operand 287 states and 486 transitions. Second operand 3 states. [2020-11-22 12:58:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:58,256 INFO L93 Difference]: Finished difference Result 786 states and 1330 transitions. [2020-11-22 12:58:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:58,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-11-22 12:58:58,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:58,261 INFO L225 Difference]: With dead ends: 786 [2020-11-22 12:58:58,261 INFO L226 Difference]: Without dead ends: 500 [2020-11-22 12:58:58,263 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 12:58:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-11-22 12:58:58,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 358. [2020-11-22 12:58:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-11-22 12:58:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2020-11-22 12:58:58,288 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 78 [2020-11-22 12:58:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:58,289 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2020-11-22 12:58:58,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2020-11-22 12:58:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-11-22 12:58:58,292 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:58,292 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-11-22 12:58:58,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:58:58,293 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:58,293 INFO L82 PathProgramCache]: Analyzing trace with hash -117694642, now seen corresponding path program 1 times [2020-11-22 12:58:58,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:58,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456767357] [2020-11-22 12:58:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:58:58,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456767357] [2020-11-22 12:58:58,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:58,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:58:58,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481397674] [2020-11-22 12:58:58,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:58,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:58,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:58,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:58,355 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand 3 states. [2020-11-22 12:58:58,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:58,800 INFO L93 Difference]: Finished difference Result 1070 states and 1740 transitions. [2020-11-22 12:58:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:58,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-11-22 12:58:58,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:58,804 INFO L225 Difference]: With dead ends: 1070 [2020-11-22 12:58:58,804 INFO L226 Difference]: Without dead ends: 642 [2020-11-22 12:58:58,806 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 12:58:58,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-11-22 12:58:58,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2020-11-22 12:58:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-11-22 12:58:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 847 transitions. [2020-11-22 12:58:58,868 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 847 transitions. Word has length 84 [2020-11-22 12:58:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:58,868 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 847 transitions. [2020-11-22 12:58:58,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:58,868 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 847 transitions. [2020-11-22 12:58:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-22 12:58:58,873 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:58,874 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-11-22 12:58:58,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:58:58,875 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:58,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1196140380, now seen corresponding path program 1 times [2020-11-22 12:58:58,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:58,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717815905] [2020-11-22 12:58:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-22 12:58:58,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717815905] [2020-11-22 12:58:58,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:58,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:58:58,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096809068] [2020-11-22 12:58:58,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:58,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:58,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:58,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:58,975 INFO L87 Difference]: Start difference. First operand 642 states and 847 transitions. Second operand 3 states. [2020-11-22 12:58:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:59,402 INFO L93 Difference]: Finished difference Result 1496 states and 2001 transitions. [2020-11-22 12:58:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:59,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-11-22 12:58:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:59,409 INFO L225 Difference]: With dead ends: 1496 [2020-11-22 12:58:59,409 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 12:58:59,410 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 12:58:59,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 12:58:59,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2020-11-22 12:58:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:58:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1036 transitions. [2020-11-22 12:58:59,449 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1036 transitions. Word has length 97 [2020-11-22 12:58:59,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:58:59,451 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1036 transitions. [2020-11-22 12:58:59,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:58:59,451 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1036 transitions. [2020-11-22 12:58:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-11-22 12:58:59,456 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:58:59,457 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:58:59,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:58:59,457 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:58:59,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:58:59,459 INFO L82 PathProgramCache]: Analyzing trace with hash 194398737, now seen corresponding path program 1 times [2020-11-22 12:58:59,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:58:59,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289705160] [2020-11-22 12:58:59,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:58:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:58:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-22 12:58:59,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289705160] [2020-11-22 12:58:59,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:58:59,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:58:59,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643904098] [2020-11-22 12:58:59,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:58:59,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:58:59,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:58:59,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:58:59,558 INFO L87 Difference]: Start difference. First operand 784 states and 1036 transitions. Second operand 3 states. [2020-11-22 12:58:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:58:59,992 INFO L93 Difference]: Finished difference Result 1567 states and 2086 transitions. [2020-11-22 12:58:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:58:59,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-11-22 12:58:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:58:59,998 INFO L225 Difference]: With dead ends: 1567 [2020-11-22 12:58:59,998 INFO L226 Difference]: Without dead ends: 855 [2020-11-22 12:59:00,000 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 12:59:00,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-11-22 12:59:00,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2020-11-22 12:59:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-22 12:59:00,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1115 transitions. [2020-11-22 12:59:00,033 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1115 transitions. Word has length 99 [2020-11-22 12:59:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:00,033 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1115 transitions. [2020-11-22 12:59:00,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1115 transitions. [2020-11-22 12:59:00,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-11-22 12:59:00,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:00,042 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:59:00,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:59:00,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:00,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:00,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2060735797, now seen corresponding path program 1 times [2020-11-22 12:59:00,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:00,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509446114] [2020-11-22 12:59:00,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:00,143 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-11-22 12:59:00,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509446114] [2020-11-22 12:59:00,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098584826] [2020-11-22 12:59:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/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 12:59:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:00,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:00,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-22 12:59:00,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-11-22 12:59:00,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:59:00,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-22 12:59:00,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391917086] [2020-11-22 12:59:00,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:00,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:00,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:00,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:00,529 INFO L87 Difference]: Start difference. First operand 855 states and 1115 transitions. Second operand 3 states. [2020-11-22 12:59:00,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:00,966 INFO L93 Difference]: Finished difference Result 1922 states and 2581 transitions. [2020-11-22 12:59:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:00,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-11-22 12:59:00,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:00,972 INFO L225 Difference]: With dead ends: 1922 [2020-11-22 12:59:00,973 INFO L226 Difference]: Without dead ends: 1068 [2020-11-22 12:59:00,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-22 12:59:01,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 784. [2020-11-22 12:59:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-11-22 12:59:01,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1033 transitions. [2020-11-22 12:59:01,012 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1033 transitions. Word has length 103 [2020-11-22 12:59:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:01,013 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1033 transitions. [2020-11-22 12:59:01,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1033 transitions. [2020-11-22 12:59:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-11-22 12:59:01,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:01,016 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:01,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-22 12:59:01,234 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:01,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:01,234 INFO L82 PathProgramCache]: Analyzing trace with hash 137930668, now seen corresponding path program 1 times [2020-11-22 12:59:01,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:01,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666922767] [2020-11-22 12:59:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:01,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666922767] [2020-11-22 12:59:01,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:01,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:01,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663846585] [2020-11-22 12:59:01,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:59:01,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:01,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:59:01,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:01,348 INFO L87 Difference]: Start difference. First operand 784 states and 1033 transitions. Second operand 4 states. [2020-11-22 12:59:01,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:01,908 INFO L93 Difference]: Finished difference Result 1638 states and 2169 transitions. [2020-11-22 12:59:01,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:59:01,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-11-22 12:59:01,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:01,913 INFO L225 Difference]: With dead ends: 1638 [2020-11-22 12:59:01,914 INFO L226 Difference]: Without dead ends: 926 [2020-11-22 12:59:01,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:59:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-11-22 12:59:01,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2020-11-22 12:59:01,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2020-11-22 12:59:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1106 transitions. [2020-11-22 12:59:01,939 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1106 transitions. Word has length 104 [2020-11-22 12:59:01,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:01,940 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1106 transitions. [2020-11-22 12:59:01,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:59:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1106 transitions. [2020-11-22 12:59:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-11-22 12:59:01,942 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:01,943 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:01,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 12:59:01,943 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:01,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:01,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1613498644, now seen corresponding path program 1 times [2020-11-22 12:59:01,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:01,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144742325] [2020-11-22 12:59:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:59:02,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144742325] [2020-11-22 12:59:02,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:59:02,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:59:02,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738504507] [2020-11-22 12:59:02,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:02,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:02,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:02,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:59:02,032 INFO L87 Difference]: Start difference. First operand 855 states and 1106 transitions. Second operand 3 states. [2020-11-22 12:59:02,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:02,402 INFO L93 Difference]: Finished difference Result 1851 states and 2451 transitions. [2020-11-22 12:59:02,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:02,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2020-11-22 12:59:02,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:02,409 INFO L225 Difference]: With dead ends: 1851 [2020-11-22 12:59:02,409 INFO L226 Difference]: Without dead ends: 1068 [2020-11-22 12:59:02,411 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 12:59:02,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-11-22 12:59:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2020-11-22 12:59:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-11-22 12:59:02,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1321 transitions. [2020-11-22 12:59:02,444 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1321 transitions. Word has length 129 [2020-11-22 12:59:02,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:02,444 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1321 transitions. [2020-11-22 12:59:02,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:02,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1321 transitions. [2020-11-22 12:59:02,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-11-22 12:59:02,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:59:02,448 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:59:02,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-22 12:59:02,450 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:59:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:59:02,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1647795815, now seen corresponding path program 1 times [2020-11-22 12:59:02,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:59:02,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536560167] [2020-11-22 12:59:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:59:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 78 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-11-22 12:59:02,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536560167] [2020-11-22 12:59:02,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988377415] [2020-11-22 12:59:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/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 12:59:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:59:02,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 12:59:02,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:59:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-22 12:59:02,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:59:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-11-22 12:59:02,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-22 12:59:02,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-11-22 12:59:02,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013924288] [2020-11-22 12:59:02,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:59:02,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:59:02,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:59:02,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:02,816 INFO L87 Difference]: Start difference. First operand 1068 states and 1321 transitions. Second operand 3 states. [2020-11-22 12:59:03,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:59:03,192 INFO L93 Difference]: Finished difference Result 2204 states and 2734 transitions. [2020-11-22 12:59:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:59:03,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 140 [2020-11-22 12:59:03,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:59:03,194 INFO L225 Difference]: With dead ends: 2204 [2020-11-22 12:59:03,194 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:59:03,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:59:03,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:59:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:59:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:59:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:59:03,197 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 140 [2020-11-22 12:59:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:59:03,197 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:59:03,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:59:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:59:03,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:59:03,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-22 12:59:03,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:59:03,594 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2020-11-22 12:59:03,868 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2020-11-22 12:59:03,871 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-22 12:59:03,871 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-22 12:59:03,871 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-22 12:59:03,872 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L471(line 471) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-22 12:59:03,873 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-22 12:59:03,874 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-22 12:59:03,875 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-22 12:59:03,875 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:59:03,875 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-22 12:59:03,875 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-22 12:59:03,875 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-22 12:59:03,875 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1)) (.cse0 (not (= ~a7~0 1))) (.cse2 (<= ~a8~0 14)) (.cse4 (<= ~a16~0 5)) (.cse1 (<= ~a20~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse3 .cse0) (and .cse2 .cse4) (and .cse4 .cse1) (<= ~a8~0 13))) [2020-11-22 12:59:03,875 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-22 12:59:03,875 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-22 12:59:03,876 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-22 12:59:03,877 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (= ~a20~0 1)) (.cse0 (not (= ~a7~0 1))) (.cse2 (<= ~a8~0 14)) (.cse4 (<= ~a16~0 5)) (.cse1 (<= ~a20~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse3 .cse0) (and .cse2 .cse4) (and .cse4 .cse1) (<= ~a8~0 13))) [2020-11-22 12:59:03,878 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-22 12:59:03,878 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 12:59:03,878 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-22 12:59:03,878 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-22 12:59:03,878 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-22 12:59:03,909 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-22 12:59:03,909 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-22 12:59:03,909 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-22 12:59:03,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:59:03 BoogieIcfgContainer [2020-11-22 12:59:03,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:59:03,925 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:59:03,925 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:59:03,926 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:59:03,926 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:58:55" (3/4) ... [2020-11-22 12:59:03,929 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:59:03,949 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-11-22 12:59:03,951 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-22 12:59:03,952 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-22 12:59:03,954 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 12:59:04,097 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c16204fd-3c62-40cc-b24a-8454b1061376/bin/utaipan/witness.graphml [2020-11-22 12:59:04,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:59:04,098 INFO L168 Benchmark]: Toolchain (without parser) took 12085.57 ms. Allocated memory was 75.5 MB in the beginning and 262.1 MB in the end (delta: 186.6 MB). Free memory was 39.8 MB in the beginning and 212.9 MB in the end (delta: -173.1 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,099 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 75.5 MB. Free memory was 58.2 MB in the beginning and 58.1 MB in the end (delta: 74.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:59:04,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.93 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 39.6 MB in the beginning and 53.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.37 ms. Allocated memory is still 92.3 MB. Free memory was 53.5 MB in the beginning and 47.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,100 INFO L168 Benchmark]: Boogie Preprocessor took 68.78 ms. Allocated memory is still 92.3 MB. Free memory was 47.9 MB in the beginning and 43.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,100 INFO L168 Benchmark]: RCFGBuilder took 2889.14 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 43.4 MB in the beginning and 88.2 MB in the end (delta: -44.9 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,101 INFO L168 Benchmark]: TraceAbstraction took 8240.28 ms. Allocated memory was 136.3 MB in the beginning and 262.1 MB in the end (delta: 125.8 MB). Free memory was 88.2 MB in the beginning and 228.7 MB in the end (delta: -140.4 MB). Peak memory consumption was 134.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,101 INFO L168 Benchmark]: Witness Printer took 172.23 ms. Allocated memory is still 262.1 MB. Free memory was 228.7 MB in the beginning and 212.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:59:04,103 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 75.5 MB. Free memory was 58.2 MB in the beginning and 58.1 MB in the end (delta: 74.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 610.93 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 39.6 MB in the beginning and 53.5 MB in the end (delta: -13.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.37 ms. Allocated memory is still 92.3 MB. Free memory was 53.5 MB in the beginning and 47.9 MB in the end (delta: 5.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.78 ms. Allocated memory is still 92.3 MB. Free memory was 47.9 MB in the beginning and 43.4 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2889.14 ms. Allocated memory was 92.3 MB in the beginning and 136.3 MB in the end (delta: 44.0 MB). Free memory was 43.4 MB in the beginning and 88.2 MB in the end (delta: -44.9 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8240.28 ms. Allocated memory was 136.3 MB in the beginning and 262.1 MB in the end (delta: 125.8 MB). Free memory was 88.2 MB in the beginning and 228.7 MB in the end (delta: -140.4 MB). Peak memory consumption was 134.3 MB. Max. memory is 16.1 GB. * Witness Printer took 172.23 ms. Allocated memory is still 262.1 MB. Free memory was 228.7 MB in the beginning and 212.9 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: 40]: Loop Invariant Derived loop invariant: (((((!(a7 == 1) && a20 <= 0) || (a8 <= 14 && a20 == 1)) || (a20 == 1 && !(a7 == 1))) || (a8 <= 14 && a16 <= 5)) || (a16 <= 5 && a20 <= 0)) || a8 <= 13 - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((!(a7 == 1) && a20 <= 0) || (a8 <= 14 && a20 == 1)) || (a20 == 1 && !(a7 == 1))) || (a8 <= 14 && a16 <= 5)) || (a16 <= 5 && a20 <= 0)) || a8 <= 13 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 604 SDtfs, 578 SDslu, 40 SDs, 0 SdLazy, 2098 SolverSat, 488 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 508 GetRequests, 491 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 639 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 83 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1740 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 484 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1225 NumberOfCodeBlocks, 1225 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1454 ConstructedInterpolants, 0 QuantifiedInterpolants, 341751 SizeOfPredicates, 2 NumberOfNonLiveVariables, 643 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 678/691 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...