./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.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_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/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 c3bec4a19ad486e7769a1ae863b766e21c94d89f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:27:52,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:27:52,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:27:52,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:27:52,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:27:52,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:27:52,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:27:52,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:27:52,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:27:52,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:27:52,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:27:52,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:27:52,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:27:52,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:27:52,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:27:52,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:27:52,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:27:52,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:27:52,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:27:52,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:27:52,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:27:52,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:27:52,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:27:52,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:27:52,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:27:52,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:27:52,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:27:52,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:27:52,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:27:52,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:27:52,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:27:52,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:27:52,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:27:52,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:27:52,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:27:52,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:27:52,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:27:52,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:27:52,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:27:52,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:27:52,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:27:52,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:27:52,779 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:27:52,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:27:52,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:27:52,783 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:27:52,784 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:27:52,784 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:27:52,784 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:27:52,784 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:27:52,785 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:27:52,785 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:27:52,785 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:27:52,785 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:27:52,785 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:27:52,786 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:27:52,786 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:27:52,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:27:52,788 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:27:52,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:27:52,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:27:52,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:27:52,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:27:52,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:27:52,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:27:52,789 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:27:52,790 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:27:52,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:27:52,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:27:52,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:27:52,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:27:52,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:27:52,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:27:52,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:27:52,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:27:52,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:27:52,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:27:52,792 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:27:52,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:27:52,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:27:52,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:27:52,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:27:52,793 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_d6ff2034-846a-4534-8a26-7e45752e799b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3bec4a19ad486e7769a1ae863b766e21c94d89f [2020-11-30 02:27:53,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:27:53,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:27:53,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:27:53,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:27:53,126 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:27:53,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2020-11-30 02:27:53,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/data/37be0ddd9/858bb2f924eb4f9aa498b1256a8e9d69/FLAG4914290a5 [2020-11-30 02:27:53,909 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:27:53,918 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2020-11-30 02:27:53,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/data/37be0ddd9/858bb2f924eb4f9aa498b1256a8e9d69/FLAG4914290a5 [2020-11-30 02:27:54,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/data/37be0ddd9/858bb2f924eb4f9aa498b1256a8e9d69 [2020-11-30 02:27:54,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:27:54,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:27:54,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:27:54,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:27:54,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:27:54,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:54,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58327d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54, skipping insertion in model container [2020-11-30 02:27:54,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:54,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:27:54,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:27:54,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:27:54,663 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:27:54,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:27:54,818 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:27:54,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54 WrapperNode [2020-11-30 02:27:54,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:27:54,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:27:54,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:27:54,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:27:54,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:54,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:54,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:27:54,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:27:54,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:27:54,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:27:54,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:54,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:54,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:54,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:54,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:55,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:55,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... [2020-11-30 02:27:55,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:27:55,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:27:55,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:27:55,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:27:55,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/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 [2020-11-30 02:27:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:27:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:27:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:27:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:27:57,925 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:27:57,929 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 02:27:57,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:27:57 BoogieIcfgContainer [2020-11-30 02:27:57,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:27:57,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:27:57,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:27:57,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:27:57,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:27:54" (1/3) ... [2020-11-30 02:27:57,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f1eb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:27:57, skipping insertion in model container [2020-11-30 02:27:57,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:27:54" (2/3) ... [2020-11-30 02:27:57,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f1eb2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:27:57, skipping insertion in model container [2020-11-30 02:27:57,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:27:57" (3/3) ... [2020-11-30 02:27:57,945 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label09.c [2020-11-30 02:27:57,956 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:27:57,962 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:27:57,974 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:27:58,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:27:58,014 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:27:58,014 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:27:58,014 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:27:58,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:27:58,015 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:27:58,015 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:27:58,015 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:27:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-30 02:27:58,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-11-30 02:27:58,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:27:58,051 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] [2020-11-30 02:27:58,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:27:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:27:58,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1520712045, now seen corresponding path program 1 times [2020-11-30 02:27:58,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:27:58,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551977188] [2020-11-30 02:27:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:27:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:27:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:27:58,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551977188] [2020-11-30 02:27:58,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:27:58,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:27:58,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190073023] [2020-11-30 02:27:58,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:27:58,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:27:58,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:27:58,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:27:58,598 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-30 02:27:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:27:59,188 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-11-30 02:27:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:27:59,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-11-30 02:27:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:27:59,215 INFO L225 Difference]: With dead ends: 224 [2020-11-30 02:27:59,221 INFO L226 Difference]: Without dead ends: 145 [2020-11-30 02:27:59,227 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 [2020-11-30 02:27:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-30 02:27:59,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-30 02:27:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-30 02:27:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-11-30 02:27:59,280 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-11-30 02:27:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:27:59,281 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-11-30 02:27:59,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:27:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-11-30 02:27:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-30 02:27:59,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:27:59,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:27:59,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:27:59,287 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:27:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:27:59,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1350083903, now seen corresponding path program 1 times [2020-11-30 02:27:59,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:27:59,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150107111] [2020-11-30 02:27:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:27:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:27:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:27:59,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150107111] [2020-11-30 02:27:59,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:27:59,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:27:59,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274977308] [2020-11-30 02:27:59,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:27:59,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:27:59,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:27:59,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:27:59,378 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-11-30 02:27:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:27:59,864 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-11-30 02:27:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:27:59,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-11-30 02:27:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:27:59,867 INFO L225 Difference]: With dead ends: 431 [2020-11-30 02:27:59,867 INFO L226 Difference]: Without dead ends: 287 [2020-11-30 02:27:59,869 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 [2020-11-30 02:27:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-11-30 02:27:59,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-11-30 02:27:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-11-30 02:27:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2020-11-30 02:27:59,903 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 76 [2020-11-30 02:27:59,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:27:59,904 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2020-11-30 02:27:59,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:27:59,905 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2020-11-30 02:27:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-30 02:27:59,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:27:59,916 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:27:59,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:27:59,917 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:27:59,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:27:59,918 INFO L82 PathProgramCache]: Analyzing trace with hash 24309890, now seen corresponding path program 1 times [2020-11-30 02:27:59,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:27:59,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010339527] [2020-11-30 02:27:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:27:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:27:59,983 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 02:27:59,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010339527] [2020-11-30 02:27:59,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:27:59,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:27:59,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134906476] [2020-11-30 02:27:59,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:27:59,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:27:59,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:27:59,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:27:59,986 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand 3 states. [2020-11-30 02:28:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:00,414 INFO L93 Difference]: Finished difference Result 857 states and 1434 transitions. [2020-11-30 02:28:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:00,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-11-30 02:28:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:00,418 INFO L225 Difference]: With dead ends: 857 [2020-11-30 02:28:00,419 INFO L226 Difference]: Without dead ends: 571 [2020-11-30 02:28:00,421 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 [2020-11-30 02:28:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-30 02:28:00,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-11-30 02:28:00,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-11-30 02:28:00,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 883 transitions. [2020-11-30 02:28:00,458 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 883 transitions. Word has length 86 [2020-11-30 02:28:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:00,459 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 883 transitions. [2020-11-30 02:28:00,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 883 transitions. [2020-11-30 02:28:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-11-30 02:28:00,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:00,465 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:00,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:28:00,465 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:00,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:00,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1345541042, now seen corresponding path program 1 times [2020-11-30 02:28:00,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:00,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057094368] [2020-11-30 02:28:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 02:28:00,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057094368] [2020-11-30 02:28:00,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:00,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:28:00,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32153922] [2020-11-30 02:28:00,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:00,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:00,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:00,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:00,535 INFO L87 Difference]: Start difference. First operand 571 states and 883 transitions. Second operand 3 states. [2020-11-30 02:28:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:00,928 INFO L93 Difference]: Finished difference Result 1567 states and 2438 transitions. [2020-11-30 02:28:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:00,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-11-30 02:28:00,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:00,935 INFO L225 Difference]: With dead ends: 1567 [2020-11-30 02:28:00,935 INFO L226 Difference]: Without dead ends: 997 [2020-11-30 02:28:00,937 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 [2020-11-30 02:28:00,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-11-30 02:28:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 713. [2020-11-30 02:28:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-11-30 02:28:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1044 transitions. [2020-11-30 02:28:00,981 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1044 transitions. Word has length 91 [2020-11-30 02:28:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:00,981 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1044 transitions. [2020-11-30 02:28:00,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1044 transitions. [2020-11-30 02:28:00,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-30 02:28:00,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:00,984 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:00,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:28:00,984 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:00,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1848421864, now seen corresponding path program 1 times [2020-11-30 02:28:00,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:00,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868053743] [2020-11-30 02:28:00,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:28:01,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868053743] [2020-11-30 02:28:01,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:01,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:28:01,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645171051] [2020-11-30 02:28:01,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:01,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:01,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:01,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:01,048 INFO L87 Difference]: Start difference. First operand 713 states and 1044 transitions. Second operand 3 states. [2020-11-30 02:28:01,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:01,469 INFO L93 Difference]: Finished difference Result 2064 states and 3033 transitions. [2020-11-30 02:28:01,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:01,469 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-11-30 02:28:01,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:01,477 INFO L225 Difference]: With dead ends: 2064 [2020-11-30 02:28:01,478 INFO L226 Difference]: Without dead ends: 1352 [2020-11-30 02:28:01,479 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 [2020-11-30 02:28:01,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-30 02:28:01,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2020-11-30 02:28:01,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-30 02:28:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1607 transitions. [2020-11-30 02:28:01,540 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1607 transitions. Word has length 94 [2020-11-30 02:28:01,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:01,541 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1607 transitions. [2020-11-30 02:28:01,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1607 transitions. [2020-11-30 02:28:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-30 02:28:01,544 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:01,544 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:01,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:28:01,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:01,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:01,545 INFO L82 PathProgramCache]: Analyzing trace with hash 114934542, now seen corresponding path program 1 times [2020-11-30 02:28:01,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:01,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240576088] [2020-11-30 02:28:01,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:01,645 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:28:01,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240576088] [2020-11-30 02:28:01,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:01,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:28:01,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854928062] [2020-11-30 02:28:01,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:01,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:01,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:01,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:01,647 INFO L87 Difference]: Start difference. First operand 1139 states and 1607 transitions. Second operand 3 states. [2020-11-30 02:28:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:01,991 INFO L93 Difference]: Finished difference Result 2419 states and 3373 transitions. [2020-11-30 02:28:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:01,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-11-30 02:28:01,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:01,999 INFO L225 Difference]: With dead ends: 2419 [2020-11-30 02:28:01,999 INFO L226 Difference]: Without dead ends: 1210 [2020-11-30 02:28:02,001 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 [2020-11-30 02:28:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-11-30 02:28:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-11-30 02:28:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-11-30 02:28:02,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1472 transitions. [2020-11-30 02:28:02,032 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1472 transitions. Word has length 98 [2020-11-30 02:28:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:02,032 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1472 transitions. [2020-11-30 02:28:02,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:02,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1472 transitions. [2020-11-30 02:28:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-11-30 02:28:02,041 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:02,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:02,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:28:02,042 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:02,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:02,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1447508884, now seen corresponding path program 1 times [2020-11-30 02:28:02,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:02,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733926175] [2020-11-30 02:28:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-11-30 02:28:02,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733926175] [2020-11-30 02:28:02,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:02,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:28:02,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385393492] [2020-11-30 02:28:02,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:28:02,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:02,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:28:02,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:28:02,168 INFO L87 Difference]: Start difference. First operand 1210 states and 1472 transitions. Second operand 4 states. [2020-11-30 02:28:02,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:02,625 INFO L93 Difference]: Finished difference Result 2490 states and 3044 transitions. [2020-11-30 02:28:02,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:28:02,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-11-30 02:28:02,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:02,633 INFO L225 Difference]: With dead ends: 2490 [2020-11-30 02:28:02,633 INFO L226 Difference]: Without dead ends: 1352 [2020-11-30 02:28:02,635 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 [2020-11-30 02:28:02,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-11-30 02:28:02,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2020-11-30 02:28:02,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-11-30 02:28:02,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1352 transitions. [2020-11-30 02:28:02,665 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1352 transitions. Word has length 102 [2020-11-30 02:28:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:02,665 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1352 transitions. [2020-11-30 02:28:02,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:28:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1352 transitions. [2020-11-30 02:28:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-11-30 02:28:02,670 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:02,670 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:02,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:28:02,670 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:02,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:02,671 INFO L82 PathProgramCache]: Analyzing trace with hash 554921150, now seen corresponding path program 1 times [2020-11-30 02:28:02,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:02,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635916789] [2020-11-30 02:28:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-30 02:28:02,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635916789] [2020-11-30 02:28:02,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:02,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:28:02,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880741920] [2020-11-30 02:28:02,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:02,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:02,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:02,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:02,748 INFO L87 Difference]: Start difference. First operand 1139 states and 1352 transitions. Second operand 3 states. [2020-11-30 02:28:03,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:03,077 INFO L93 Difference]: Finished difference Result 2703 states and 3253 transitions. [2020-11-30 02:28:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:03,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-11-30 02:28:03,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:03,091 INFO L225 Difference]: With dead ends: 2703 [2020-11-30 02:28:03,091 INFO L226 Difference]: Without dead ends: 1636 [2020-11-30 02:28:03,094 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 [2020-11-30 02:28:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-11-30 02:28:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1423. [2020-11-30 02:28:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2020-11-30 02:28:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1726 transitions. [2020-11-30 02:28:03,135 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1726 transitions. Word has length 111 [2020-11-30 02:28:03,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:03,135 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1726 transitions. [2020-11-30 02:28:03,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1726 transitions. [2020-11-30 02:28:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-11-30 02:28:03,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:03,139 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:03,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:28:03,141 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:03,141 INFO L82 PathProgramCache]: Analyzing trace with hash -632912650, now seen corresponding path program 1 times [2020-11-30 02:28:03,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:03,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308211011] [2020-11-30 02:28:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:03,219 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-30 02:28:03,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308211011] [2020-11-30 02:28:03,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:03,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:28:03,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064785705] [2020-11-30 02:28:03,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:03,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:03,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:03,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:03,226 INFO L87 Difference]: Start difference. First operand 1423 states and 1726 transitions. Second operand 3 states. [2020-11-30 02:28:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:03,549 INFO L93 Difference]: Finished difference Result 2987 states and 3627 transitions. [2020-11-30 02:28:03,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:03,550 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-11-30 02:28:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:03,559 INFO L225 Difference]: With dead ends: 2987 [2020-11-30 02:28:03,559 INFO L226 Difference]: Without dead ends: 1565 [2020-11-30 02:28:03,561 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 [2020-11-30 02:28:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-11-30 02:28:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2020-11-30 02:28:03,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-11-30 02:28:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1882 transitions. [2020-11-30 02:28:03,600 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1882 transitions. Word has length 127 [2020-11-30 02:28:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:03,600 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1882 transitions. [2020-11-30 02:28:03,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1882 transitions. [2020-11-30 02:28:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-11-30 02:28:03,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:03,608 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:03,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:28:03,608 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:03,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:03,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1221452336, now seen corresponding path program 1 times [2020-11-30 02:28:03,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:03,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852231069] [2020-11-30 02:28:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-30 02:28:03,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852231069] [2020-11-30 02:28:03,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:03,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:28:03,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172103694] [2020-11-30 02:28:03,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:28:03,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:03,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:28:03,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:28:03,717 INFO L87 Difference]: Start difference. First operand 1565 states and 1882 transitions. Second operand 4 states. [2020-11-30 02:28:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:04,186 INFO L93 Difference]: Finished difference Result 3129 states and 3775 transitions. [2020-11-30 02:28:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:28:04,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-11-30 02:28:04,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:04,197 INFO L225 Difference]: With dead ends: 3129 [2020-11-30 02:28:04,197 INFO L226 Difference]: Without dead ends: 1636 [2020-11-30 02:28:04,199 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 [2020-11-30 02:28:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-11-30 02:28:04,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1565. [2020-11-30 02:28:04,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-11-30 02:28:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1862 transitions. [2020-11-30 02:28:04,238 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1862 transitions. Word has length 131 [2020-11-30 02:28:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:04,239 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1862 transitions. [2020-11-30 02:28:04,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:28:04,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1862 transitions. [2020-11-30 02:28:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-11-30 02:28:04,243 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:04,243 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:28:04,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 02:28:04,243 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:04,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:04,244 INFO L82 PathProgramCache]: Analyzing trace with hash -175180925, now seen corresponding path program 1 times [2020-11-30 02:28:04,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:04,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733613933] [2020-11-30 02:28:04,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-30 02:28:04,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733613933] [2020-11-30 02:28:04,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:04,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:28:04,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37181680] [2020-11-30 02:28:04,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:04,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:04,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:04,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:04,389 INFO L87 Difference]: Start difference. First operand 1565 states and 1862 transitions. Second operand 3 states. [2020-11-30 02:28:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:04,759 INFO L93 Difference]: Finished difference Result 3413 states and 4101 transitions. [2020-11-30 02:28:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:04,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-11-30 02:28:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:04,769 INFO L225 Difference]: With dead ends: 3413 [2020-11-30 02:28:04,769 INFO L226 Difference]: Without dead ends: 1778 [2020-11-30 02:28:04,771 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 [2020-11-30 02:28:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-11-30 02:28:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1636. [2020-11-30 02:28:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-11-30 02:28:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1946 transitions. [2020-11-30 02:28:04,820 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1946 transitions. Word has length 148 [2020-11-30 02:28:04,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:04,820 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1946 transitions. [2020-11-30 02:28:04,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:04,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1946 transitions. [2020-11-30 02:28:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-11-30 02:28:04,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:04,826 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 02:28:04,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 02:28:04,826 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:04,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:04,827 INFO L82 PathProgramCache]: Analyzing trace with hash 316518635, now seen corresponding path program 1 times [2020-11-30 02:28:04,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:04,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256785370] [2020-11-30 02:28:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 02:28:04,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256785370] [2020-11-30 02:28:04,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:28:04,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 02:28:04,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779317803] [2020-11-30 02:28:04,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:04,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:04,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:04,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:28:04,929 INFO L87 Difference]: Start difference. First operand 1636 states and 1946 transitions. Second operand 3 states. [2020-11-30 02:28:05,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:05,271 INFO L93 Difference]: Finished difference Result 3342 states and 3975 transitions. [2020-11-30 02:28:05,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:05,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-11-30 02:28:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:05,281 INFO L225 Difference]: With dead ends: 3342 [2020-11-30 02:28:05,281 INFO L226 Difference]: Without dead ends: 1778 [2020-11-30 02:28:05,283 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 [2020-11-30 02:28:05,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-11-30 02:28:05,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1707. [2020-11-30 02:28:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-11-30 02:28:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1971 transitions. [2020-11-30 02:28:05,324 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1971 transitions. Word has length 191 [2020-11-30 02:28:05,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:05,325 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 1971 transitions. [2020-11-30 02:28:05,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:05,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1971 transitions. [2020-11-30 02:28:05,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-11-30 02:28:05,330 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:05,330 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 02:28:05,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 02:28:05,330 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:05,331 INFO L82 PathProgramCache]: Analyzing trace with hash -942297628, now seen corresponding path program 1 times [2020-11-30 02:28:05,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:05,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980640105] [2020-11-30 02:28:05,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 194 proven. 35 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-11-30 02:28:05,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980640105] [2020-11-30 02:28:05,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292406869] [2020-11-30 02:28:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/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 [2020-11-30 02:28:05,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:05,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:28:05,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-11-30 02:28:05,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-11-30 02:28:06,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:28:06,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-11-30 02:28:06,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924577821] [2020-11-30 02:28:06,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:28:06,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:06,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:28:06,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:28:06,011 INFO L87 Difference]: Start difference. First operand 1707 states and 1971 transitions. Second operand 3 states. [2020-11-30 02:28:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:06,352 INFO L93 Difference]: Finished difference Result 3413 states and 3953 transitions. [2020-11-30 02:28:06,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:28:06,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2020-11-30 02:28:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:06,362 INFO L225 Difference]: With dead ends: 3413 [2020-11-30 02:28:06,362 INFO L226 Difference]: Without dead ends: 1778 [2020-11-30 02:28:06,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 405 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:28:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-11-30 02:28:06,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1565. [2020-11-30 02:28:06,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-11-30 02:28:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1798 transitions. [2020-11-30 02:28:06,407 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1798 transitions. Word has length 204 [2020-11-30 02:28:06,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:06,408 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1798 transitions. [2020-11-30 02:28:06,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:28:06,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1798 transitions. [2020-11-30 02:28:06,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-11-30 02:28:06,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:28:06,413 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-11-30 02:28:06,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-30 02:28:06,627 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:28:06,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:28:06,628 INFO L82 PathProgramCache]: Analyzing trace with hash -170405630, now seen corresponding path program 1 times [2020-11-30 02:28:06,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:28:06,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110726438] [2020-11-30 02:28:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:28:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-30 02:28:07,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110726438] [2020-11-30 02:28:07,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743026282] [2020-11-30 02:28:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/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 [2020-11-30 02:28:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:28:07,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:28:07,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:28:07,285 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-30 02:28:07,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:28:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-11-30 02:28:07,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:28:07,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2020-11-30 02:28:07,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671598127] [2020-11-30 02:28:07,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:28:07,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:28:07,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:28:07,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:28:07,376 INFO L87 Difference]: Start difference. First operand 1565 states and 1798 transitions. Second operand 4 states. [2020-11-30 02:28:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:28:07,878 INFO L93 Difference]: Finished difference Result 3482 states and 4042 transitions. [2020-11-30 02:28:07,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:28:07,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2020-11-30 02:28:07,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:28:07,879 INFO L225 Difference]: With dead ends: 3482 [2020-11-30 02:28:07,879 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:28:07,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:28:07,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:28:07,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:28:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:28:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:28:07,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 213 [2020-11-30 02:28:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:28:07,884 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:28:07,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:28:07,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:28:07,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:28:08,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-30 02:28:08,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:28:08,585 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-11-30 02:28:08,899 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-11-30 02:28:08,902 INFO L274 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-11-30 02:28:08,902 INFO L274 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-11-30 02:28:08,902 INFO L274 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-11-30 02:28:08,903 INFO L274 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L540(line 540) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-11-30 02:28:08,904 INFO L274 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-11-30 02:28:08,905 INFO L274 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-11-30 02:28:08,906 INFO L274 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-11-30 02:28:08,906 INFO L274 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-11-30 02:28:08,906 INFO L274 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-11-30 02:28:08,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:28:08,906 INFO L274 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-11-30 02:28:08,906 INFO L274 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-11-30 02:28:08,906 INFO L274 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-11-30 02:28:08,908 INFO L270 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse0 (< 13 ~a8~0)) (.cse3 (let ((.cse8 (<= ~a8~0 13))) (or (and .cse2 .cse8) (and .cse6 .cse8)))) (.cse4 (= ~a16~0 6)) (.cse1 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a7~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse0 .cse5) (<= ~a16~0 4) (and .cse3 .cse2 .cse6) (and .cse4 (<= 15 ~a8~0)) (and .cse1 .cse7 .cse2) (and .cse5 .cse7)))) [2020-11-30 02:28:08,908 INFO L274 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-11-30 02:28:08,908 INFO L274 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-11-30 02:28:08,908 INFO L274 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-11-30 02:28:08,908 INFO L274 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-11-30 02:28:08,908 INFO L274 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-11-30 02:28:08,908 INFO L274 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-11-30 02:28:08,909 INFO L274 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-11-30 02:28:08,909 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:28:08,909 INFO L274 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-11-30 02:28:08,909 INFO L277 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-11-30 02:28:08,909 INFO L274 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-11-30 02:28:08,909 INFO L274 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-11-30 02:28:08,910 INFO L274 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-11-30 02:28:08,910 INFO L274 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-11-30 02:28:08,910 INFO L274 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-11-30 02:28:08,910 INFO L274 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-11-30 02:28:08,910 INFO L274 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-11-30 02:28:08,910 INFO L274 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-11-30 02:28:08,910 INFO L274 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-11-30 02:28:08,910 INFO L274 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-11-30 02:28:08,911 INFO L274 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-11-30 02:28:08,911 INFO L274 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-11-30 02:28:08,911 INFO L274 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-11-30 02:28:08,911 INFO L270 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse0 (< 13 ~a8~0)) (.cse3 (let ((.cse8 (<= ~a8~0 13))) (or (and .cse2 .cse8) (and .cse6 .cse8)))) (.cse4 (= ~a16~0 6)) (.cse1 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a7~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse0 .cse5) (<= ~a16~0 4) (and .cse3 .cse2 .cse6) (and .cse4 (<= 15 ~a8~0)) (and .cse1 .cse7 .cse2) (and .cse5 .cse7)))) [2020-11-30 02:28:08,911 INFO L274 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-11-30 02:28:08,912 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:28:08,912 INFO L274 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-11-30 02:28:08,912 INFO L274 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-11-30 02:28:08,912 INFO L274 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-11-30 02:28:08,912 INFO L274 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-11-30 02:28:08,913 INFO L274 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-11-30 02:28:08,913 INFO L274 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-11-30 02:28:08,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:28:08 BoogieIcfgContainer [2020-11-30 02:28:08,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:28:08,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:28:08,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:28:08,936 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:28:08,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:27:57" (3/4) ... [2020-11-30 02:28:08,943 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:28:08,978 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-11-30 02:28:08,980 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-11-30 02:28:08,982 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 02:28:08,984 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:28:09,181 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d6ff2034-846a-4534-8a26-7e45752e799b/bin/utaipan/witness.graphml [2020-11-30 02:28:09,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:28:09,182 INFO L168 Benchmark]: Toolchain (without parser) took 15053.90 ms. Allocated memory was 119.5 MB in the beginning and 352.3 MB in the end (delta: 232.8 MB). Free memory was 84.0 MB in the beginning and 311.3 MB in the end (delta: -227.2 MB). Peak memory consumption was 206.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:09,182 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory was 37.6 MB in the beginning and 37.6 MB in the end (delta: 32.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:28:09,183 INFO L168 Benchmark]: CACSL2BoogieTranslator took 689.17 ms. Allocated memory is still 119.5 MB. Free memory was 83.8 MB in the beginning and 78.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:09,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 117.84 ms. Allocated memory is still 119.5 MB. Free memory was 78.1 MB in the beginning and 72.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:09,184 INFO L168 Benchmark]: Boogie Preprocessor took 110.85 ms. Allocated memory is still 119.5 MB. Free memory was 72.4 MB in the beginning and 68.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:09,184 INFO L168 Benchmark]: RCFGBuilder took 2881.15 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 67.6 MB in the beginning and 85.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 47.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:09,185 INFO L168 Benchmark]: TraceAbstraction took 10999.15 ms. Allocated memory was 144.7 MB in the beginning and 352.3 MB in the end (delta: 207.6 MB). Free memory was 85.1 MB in the beginning and 124.6 MB in the end (delta: -39.4 MB). Peak memory consumption was 169.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:09,185 INFO L168 Benchmark]: Witness Printer took 245.50 ms. Allocated memory is still 352.3 MB. Free memory was 124.6 MB in the beginning and 311.3 MB in the end (delta: -186.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:28:09,188 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 77.6 MB. Free memory was 37.6 MB in the beginning and 37.6 MB in the end (delta: 32.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 689.17 ms. Allocated memory is still 119.5 MB. Free memory was 83.8 MB in the beginning and 78.1 MB in the end (delta: 5.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 117.84 ms. Allocated memory is still 119.5 MB. Free memory was 78.1 MB in the beginning and 72.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 110.85 ms. Allocated memory is still 119.5 MB. Free memory was 72.4 MB in the beginning and 68.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2881.15 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 67.6 MB in the beginning and 85.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 47.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10999.15 ms. Allocated memory was 144.7 MB in the beginning and 352.3 MB in the end (delta: 207.6 MB). Free memory was 85.1 MB in the beginning and 124.6 MB in the end (delta: -39.4 MB). Peak memory consumption was 169.2 MB. Max. memory is 16.1 GB. * Witness Printer took 245.50 ms. Allocated memory is still 352.3 MB. Free memory was 124.6 MB in the beginning and 311.3 MB in the end (delta: -186.7 MB). Peak memory consumption was 13.6 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: ((((((((13 < a8 && a21 == 1) && a20 == 1) || (((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a16 == 6)) || (13 < a8 && a16 <= 5)) || a16 <= 4) || ((((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a20 == 1) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a16 <= 5 && a7 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((13 < a8 && a21 == 1) && a20 == 1) || (((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a16 == 6)) || (13 < a8 && a16 <= 5)) || a16 <= 4) || ((((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a20 == 1) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a16 <= 5 && a7 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.0s, OverallIterations: 14, TraceHistogramMax: 7, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 674 SDtfs, 1013 SDslu, 66 SDs, 0 SdLazy, 3087 SolverSat, 724 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 872 GetRequests, 846 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1707occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 1420 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 71 NumberOfFragments, 173 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3366 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 448 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 2160 NumberOfCodeBlocks, 2160 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2559 ConstructedInterpolants, 0 QuantifiedInterpolants, 1333056 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1010 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 2435/2553 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...