./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.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_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/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 ef15c4790969d8e640b2241771e44174daa41407 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:02:53,585 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:02:53,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:02:53,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:02:53,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:02:53,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:02:53,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:02:53,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:02:53,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:02:53,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:02:53,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:02:53,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:02:53,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:02:53,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:02:53,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:02:53,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:02:53,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:02:53,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:02:53,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:02:53,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:02:53,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:02:53,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:02:53,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:02:53,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:02:53,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:02:53,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:02:53,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:02:53,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:02:53,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:02:53,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:02:53,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:02:53,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:02:53,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:02:53,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:02:53,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:02:53,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:02:53,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:02:53,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:02:53,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:02:53,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:02:53,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:02:53,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:02:53,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:02:53,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:02:53,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:02:53,870 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:02:53,870 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:02:53,870 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:02:53,871 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:02:53,871 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:02:53,871 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:02:53,872 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:02:53,873 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:02:53,874 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:02:53,874 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:02:53,875 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:02:53,875 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:02:53,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:02:53,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:02:53,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:02:53,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:02:53,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:02:53,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:02:53,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:02:53,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:02:53,880 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:02:53,880 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:02:53,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:02:53,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:02:53,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:02:53,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:02:53,884 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:02:53,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:02:53,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:02:53,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:02:53,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:02:53,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:02:53,887 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:02:53,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:02:53,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:02:53,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:02:53,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:02:53,888 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_bf1dd7ac-fefc-4d53-aa64-53e972637a54/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef15c4790969d8e640b2241771e44174daa41407 [2020-11-30 02:02:54,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:02:54,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:02:54,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:02:54,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:02:54,283 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:02:54,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/../../sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-11-30 02:02:54,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/data/0368c2437/673db3b3e3d94871a19385756c600cc0/FLAG5f03f27ae [2020-11-30 02:02:55,167 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:02:55,169 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/sv-benchmarks/c/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-11-30 02:02:55,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/data/0368c2437/673db3b3e3d94871a19385756c600cc0/FLAG5f03f27ae [2020-11-30 02:02:55,465 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/data/0368c2437/673db3b3e3d94871a19385756c600cc0 [2020-11-30 02:02:55,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:02:55,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:02:55,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:02:55,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:02:55,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:02:55,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:55,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f5ca09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55, skipping insertion in model container [2020-11-30 02:02:55,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:55,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:02:55,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:02:55,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:02:55,883 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:02:55,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:02:55,942 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:02:55,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55 WrapperNode [2020-11-30 02:02:55,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:02:55,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:02:55,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:02:55,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:02:55,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:55,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:56,000 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:02:56,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:02:56,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:02:56,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:02:56,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:56,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:56,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:56,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:56,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:56,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:56,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... [2020-11-30 02:02:56,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:02:56,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:02:56,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:02:56,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:02:56,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/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 02:02:56,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:02:56,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:02:56,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:02:56,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:02:57,049 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:02:57,049 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-11-30 02:02:57,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:02:57 BoogieIcfgContainer [2020-11-30 02:02:57,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:02:57,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:02:57,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:02:57,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:02:57,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:02:55" (1/3) ... [2020-11-30 02:02:57,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c41486d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:02:57, skipping insertion in model container [2020-11-30 02:02:57,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:02:55" (2/3) ... [2020-11-30 02:02:57,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c41486d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:02:57, skipping insertion in model container [2020-11-30 02:02:57,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:02:57" (3/3) ... [2020-11-30 02:02:57,067 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-11-30 02:02:57,084 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:02:57,091 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-11-30 02:02:57,107 INFO L253 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-11-30 02:02:57,139 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:02:57,139 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:02:57,140 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:02:57,140 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:02:57,140 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:02:57,140 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:02:57,141 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:02:57,141 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:02:57,166 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-11-30 02:02:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:02:57,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:57,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:57,175 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:57,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1642391666, now seen corresponding path program 1 times [2020-11-30 02:02:57,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:57,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637349624] [2020-11-30 02:02:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:57,457 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 02:02:57,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637349624] [2020-11-30 02:02:57,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:57,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:02:57,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260455484] [2020-11-30 02:02:57,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:02:57,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:57,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:02:57,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:02:57,486 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2020-11-30 02:02:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:57,748 INFO L93 Difference]: Finished difference Result 120 states and 161 transitions. [2020-11-30 02:02:57,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:02:57,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 02:02:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:57,776 INFO L225 Difference]: With dead ends: 120 [2020-11-30 02:02:57,781 INFO L226 Difference]: Without dead ends: 108 [2020-11-30 02:02:57,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:02:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-30 02:02:57,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 64. [2020-11-30 02:02:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-30 02:02:57,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-11-30 02:02:57,861 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 7 [2020-11-30 02:02:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:57,863 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-11-30 02:02:57,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:02:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-11-30 02:02:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:02:57,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:57,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:57,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:02:57,868 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:57,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:57,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1638017359, now seen corresponding path program 1 times [2020-11-30 02:02:57,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:57,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214500322] [2020-11-30 02:02:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:57,989 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 02:02:57,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214500322] [2020-11-30 02:02:57,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:57,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:02:57,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379976623] [2020-11-30 02:02:57,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:02:57,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:57,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:02:57,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:02:57,993 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 4 states. [2020-11-30 02:02:58,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:58,126 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-11-30 02:02:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:02:58,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 02:02:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:58,128 INFO L225 Difference]: With dead ends: 64 [2020-11-30 02:02:58,129 INFO L226 Difference]: Without dead ends: 62 [2020-11-30 02:02:58,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:02:58,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-30 02:02:58,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-30 02:02:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-30 02:02:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 66 transitions. [2020-11-30 02:02:58,140 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 66 transitions. Word has length 7 [2020-11-30 02:02:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:58,140 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 66 transitions. [2020-11-30 02:02:58,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:02:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 66 transitions. [2020-11-30 02:02:58,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:02:58,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:58,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:58,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:02:58,142 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:58,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:58,143 INFO L82 PathProgramCache]: Analyzing trace with hash -761063381, now seen corresponding path program 1 times [2020-11-30 02:02:58,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:58,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160977917] [2020-11-30 02:02:58,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:58,226 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 02:02:58,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160977917] [2020-11-30 02:02:58,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:58,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:02:58,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254616357] [2020-11-30 02:02:58,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:02:58,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:02:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:02:58,229 INFO L87 Difference]: Start difference. First operand 62 states and 66 transitions. Second operand 4 states. [2020-11-30 02:02:58,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:58,376 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-11-30 02:02:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:02:58,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-30 02:02:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:58,379 INFO L225 Difference]: With dead ends: 68 [2020-11-30 02:02:58,379 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 02:02:58,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:02:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 02:02:58,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-11-30 02:02:58,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-30 02:02:58,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-11-30 02:02:58,389 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 8 [2020-11-30 02:02:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:58,389 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-11-30 02:02:58,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:02:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-11-30 02:02:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:02:58,391 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:58,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:58,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 02:02:58,392 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:58,396 INFO L82 PathProgramCache]: Analyzing trace with hash 228608316, now seen corresponding path program 1 times [2020-11-30 02:02:58,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:58,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476758095] [2020-11-30 02:02:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:58,492 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 02:02:58,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476758095] [2020-11-30 02:02:58,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:58,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:02:58,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255746579] [2020-11-30 02:02:58,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:02:58,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:58,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:02:58,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:02:58,496 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 5 states. [2020-11-30 02:02:58,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:58,639 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-11-30 02:02:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:02:58,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 02:02:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:58,641 INFO L225 Difference]: With dead ends: 66 [2020-11-30 02:02:58,641 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 02:02:58,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:02:58,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 02:02:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-11-30 02:02:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-30 02:02:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-11-30 02:02:58,650 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 10 [2020-11-30 02:02:58,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:58,651 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-11-30 02:02:58,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:02:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-11-30 02:02:58,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:02:58,652 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:58,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:58,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 02:02:58,658 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:58,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:58,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1237280145, now seen corresponding path program 1 times [2020-11-30 02:02:58,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:58,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055000481] [2020-11-30 02:02:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:58,765 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 02:02:58,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055000481] [2020-11-30 02:02:58,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:58,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:02:58,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520231601] [2020-11-30 02:02:58,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:02:58,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:58,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:02:58,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:02:58,769 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 5 states. [2020-11-30 02:02:58,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:58,939 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-11-30 02:02:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:02:58,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 02:02:58,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:58,941 INFO L225 Difference]: With dead ends: 64 [2020-11-30 02:02:58,941 INFO L226 Difference]: Without dead ends: 62 [2020-11-30 02:02:58,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:02:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-30 02:02:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-11-30 02:02:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-30 02:02:58,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-11-30 02:02:58,959 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 10 [2020-11-30 02:02:58,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:58,959 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-11-30 02:02:58,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:02:58,959 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-11-30 02:02:58,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:02:58,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:58,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:58,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 02:02:58,961 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:58,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:58,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1502458887, now seen corresponding path program 1 times [2020-11-30 02:02:58,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:58,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298725128] [2020-11-30 02:02:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:59,066 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 02:02:59,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298725128] [2020-11-30 02:02:59,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:59,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:02:59,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048614037] [2020-11-30 02:02:59,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:02:59,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:59,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:02:59,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:02:59,069 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 5 states. [2020-11-30 02:02:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:59,314 INFO L93 Difference]: Finished difference Result 107 states and 114 transitions. [2020-11-30 02:02:59,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:02:59,315 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 02:02:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:59,317 INFO L225 Difference]: With dead ends: 107 [2020-11-30 02:02:59,317 INFO L226 Difference]: Without dead ends: 105 [2020-11-30 02:02:59,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:02:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-11-30 02:02:59,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 59. [2020-11-30 02:02:59,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-30 02:02:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-11-30 02:02:59,328 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 11 [2020-11-30 02:02:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:59,329 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-11-30 02:02:59,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:02:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-11-30 02:02:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:02:59,330 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:59,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:59,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 02:02:59,331 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:59,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:59,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1503070595, now seen corresponding path program 1 times [2020-11-30 02:02:59,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:59,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653898214] [2020-11-30 02:02:59,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:59,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:59,433 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 02:02:59,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653898214] [2020-11-30 02:02:59,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:59,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:02:59,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011532254] [2020-11-30 02:02:59,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:02:59,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:59,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:02:59,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:02:59,436 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 4 states. [2020-11-30 02:02:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:59,537 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-11-30 02:02:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:02:59,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 02:02:59,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:59,539 INFO L225 Difference]: With dead ends: 60 [2020-11-30 02:02:59,539 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 02:02:59,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:02:59,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 02:02:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-11-30 02:02:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-30 02:02:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-11-30 02:02:59,547 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 11 [2020-11-30 02:02:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:59,547 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-11-30 02:02:59,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:02:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-11-30 02:02:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:02:59,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:59,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:59,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 02:02:59,553 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:59,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:59,554 INFO L82 PathProgramCache]: Analyzing trace with hash 299027233, now seen corresponding path program 1 times [2020-11-30 02:02:59,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:59,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782296190] [2020-11-30 02:02:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:59,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:59,633 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 02:02:59,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782296190] [2020-11-30 02:02:59,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:59,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:02:59,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496378832] [2020-11-30 02:02:59,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:02:59,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:59,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:02:59,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:02:59,636 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 4 states. [2020-11-30 02:02:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:02:59,757 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-11-30 02:02:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:02:59,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 02:02:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:02:59,759 INFO L225 Difference]: With dead ends: 56 [2020-11-30 02:02:59,759 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 02:02:59,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:02:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 02:02:59,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-11-30 02:02:59,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-30 02:02:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-11-30 02:02:59,765 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 11 [2020-11-30 02:02:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:02:59,766 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-11-30 02:02:59,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:02:59,766 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-11-30 02:02:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:02:59,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:02:59,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:02:59,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 02:02:59,767 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:02:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:02:59,768 INFO L82 PathProgramCache]: Analyzing trace with hash 668420985, now seen corresponding path program 1 times [2020-11-30 02:02:59,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:02:59,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195197302] [2020-11-30 02:02:59,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:02:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:02:59,982 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 02:02:59,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195197302] [2020-11-30 02:02:59,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:02:59,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:02:59,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284207818] [2020-11-30 02:02:59,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:02:59,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:02:59,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:02:59,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:02:59,984 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 6 states. [2020-11-30 02:03:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:00,250 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-11-30 02:03:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:03:00,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 02:03:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:00,252 INFO L225 Difference]: With dead ends: 117 [2020-11-30 02:03:00,252 INFO L226 Difference]: Without dead ends: 115 [2020-11-30 02:03:00,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 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 02:03:00,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-30 02:03:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 56. [2020-11-30 02:03:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 02:03:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2020-11-30 02:03:00,274 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 12 [2020-11-30 02:03:00,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:00,274 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2020-11-30 02:03:00,278 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2020-11-30 02:03:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:03:00,280 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:00,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:00,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-30 02:03:00,281 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:00,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:00,281 INFO L82 PathProgramCache]: Analyzing trace with hash 702813064, now seen corresponding path program 1 times [2020-11-30 02:03:00,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:00,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697825489] [2020-11-30 02:03:00,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:00,353 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 02:03:00,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697825489] [2020-11-30 02:03:00,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:00,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:03:00,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610261261] [2020-11-30 02:03:00,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:03:00,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:00,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:03:00,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:03:00,356 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 5 states. [2020-11-30 02:03:00,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:00,509 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2020-11-30 02:03:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:03:00,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 02:03:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:00,512 INFO L225 Difference]: With dead ends: 56 [2020-11-30 02:03:00,512 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 02:03:00,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 02:03:00,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-30 02:03:00,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 02:03:00,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-11-30 02:03:00,519 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 12 [2020-11-30 02:03:00,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:00,519 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-11-30 02:03:00,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:03:00,520 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-11-30 02:03:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:03:00,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:00,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:00,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 02:03:00,525 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:00,526 INFO L82 PathProgramCache]: Analyzing trace with hash 700719752, now seen corresponding path program 1 times [2020-11-30 02:03:00,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:00,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365582418] [2020-11-30 02:03:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:00,616 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 02:03:00,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365582418] [2020-11-30 02:03:00,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:00,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:03:00,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995274108] [2020-11-30 02:03:00,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:03:00,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:00,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:03:00,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:03:00,618 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2020-11-30 02:03:00,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:00,983 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-11-30 02:03:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:03:00,984 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 02:03:00,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:00,984 INFO L225 Difference]: With dead ends: 69 [2020-11-30 02:03:00,985 INFO L226 Difference]: Without dead ends: 67 [2020-11-30 02:03:00,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-30 02:03:00,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2020-11-30 02:03:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 02:03:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-30 02:03:00,993 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 12 [2020-11-30 02:03:00,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:00,993 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-30 02:03:00,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:03:00,993 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-30 02:03:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:03:00,994 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:00,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:00,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 02:03:00,994 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:00,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:00,995 INFO L82 PathProgramCache]: Analyzing trace with hash -761568064, now seen corresponding path program 1 times [2020-11-30 02:03:00,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:00,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924355092] [2020-11-30 02:03:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:01,207 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 02:03:01,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924355092] [2020-11-30 02:03:01,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:01,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:03:01,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42484974] [2020-11-30 02:03:01,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:01,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:01,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:01,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:01,209 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-11-30 02:03:01,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:01,413 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2020-11-30 02:03:01,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:03:01,415 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 02:03:01,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:01,418 INFO L225 Difference]: With dead ends: 77 [2020-11-30 02:03:01,418 INFO L226 Difference]: Without dead ends: 75 [2020-11-30 02:03:01,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:03:01,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-30 02:03:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 52. [2020-11-30 02:03:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 02:03:01,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2020-11-30 02:03:01,425 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 13 [2020-11-30 02:03:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:01,426 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2020-11-30 02:03:01,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2020-11-30 02:03:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:03:01,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:01,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:01,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-30 02:03:01,428 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:01,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:01,432 INFO L82 PathProgramCache]: Analyzing trace with hash 312374664, now seen corresponding path program 1 times [2020-11-30 02:03:01,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:01,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998587297] [2020-11-30 02:03:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:01,639 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 02:03:01,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998587297] [2020-11-30 02:03:01,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:01,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:03:01,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441973748] [2020-11-30 02:03:01,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:01,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:01,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:01,641 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 6 states. [2020-11-30 02:03:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:01,818 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-11-30 02:03:01,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:03:01,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 02:03:01,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:01,820 INFO L225 Difference]: With dead ends: 75 [2020-11-30 02:03:01,821 INFO L226 Difference]: Without dead ends: 71 [2020-11-30 02:03:01,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 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 02:03:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-30 02:03:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2020-11-30 02:03:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 02:03:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2020-11-30 02:03:01,828 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 13 [2020-11-30 02:03:01,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:01,828 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2020-11-30 02:03:01,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:01,849 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2020-11-30 02:03:01,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:03:01,850 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:01,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:01,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-30 02:03:01,851 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:01,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:01,851 INFO L82 PathProgramCache]: Analyzing trace with hash 312936722, now seen corresponding path program 1 times [2020-11-30 02:03:01,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:01,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038775311] [2020-11-30 02:03:01,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:01,929 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 02:03:01,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038775311] [2020-11-30 02:03:01,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:01,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 02:03:01,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955153255] [2020-11-30 02:03:01,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:03:01,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:01,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:03:01,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:03:01,931 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand 5 states. [2020-11-30 02:03:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:02,075 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-11-30 02:03:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:03:02,076 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-30 02:03:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:02,077 INFO L225 Difference]: With dead ends: 78 [2020-11-30 02:03:02,077 INFO L226 Difference]: Without dead ends: 76 [2020-11-30 02:03:02,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:02,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-30 02:03:02,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 56. [2020-11-30 02:03:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 02:03:02,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2020-11-30 02:03:02,089 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 13 [2020-11-30 02:03:02,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:02,090 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2020-11-30 02:03:02,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:03:02,090 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2020-11-30 02:03:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:03:02,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:02,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:02,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-30 02:03:02,092 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:02,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:02,098 INFO L82 PathProgramCache]: Analyzing trace with hash 247481924, now seen corresponding path program 1 times [2020-11-30 02:03:02,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:02,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080180024] [2020-11-30 02:03:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:02,280 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 02:03:02,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080180024] [2020-11-30 02:03:02,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:02,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:03:02,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65245909] [2020-11-30 02:03:02,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:02,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:02,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:02,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:02,282 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 6 states. [2020-11-30 02:03:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:02,473 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2020-11-30 02:03:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:03:02,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 02:03:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:02,475 INFO L225 Difference]: With dead ends: 81 [2020-11-30 02:03:02,475 INFO L226 Difference]: Without dead ends: 79 [2020-11-30 02:03:02,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 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 02:03:02,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-30 02:03:02,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 59. [2020-11-30 02:03:02,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-30 02:03:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-11-30 02:03:02,485 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 13 [2020-11-30 02:03:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:02,485 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-11-30 02:03:02,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-11-30 02:03:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:03:02,487 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:02,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:02,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-30 02:03:02,490 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:02,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:02,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1111109925, now seen corresponding path program 1 times [2020-11-30 02:03:02,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:02,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879140121] [2020-11-30 02:03:02,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:02,679 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 02:03:02,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879140121] [2020-11-30 02:03:02,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:02,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:03:02,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066283026] [2020-11-30 02:03:02,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:02,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:02,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:02,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:02,681 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-11-30 02:03:02,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:02,880 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-11-30 02:03:02,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:03:02,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 02:03:02,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:02,881 INFO L225 Difference]: With dead ends: 86 [2020-11-30 02:03:02,881 INFO L226 Difference]: Without dead ends: 84 [2020-11-30 02:03:02,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 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 02:03:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-30 02:03:02,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 62. [2020-11-30 02:03:02,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-30 02:03:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2020-11-30 02:03:02,888 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 14 [2020-11-30 02:03:02,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:02,888 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2020-11-30 02:03:02,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2020-11-30 02:03:02,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:03:02,890 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:02,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:02,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-30 02:03:02,890 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:02,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:02,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1607116967, now seen corresponding path program 1 times [2020-11-30 02:03:02,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:02,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376002789] [2020-11-30 02:03:02,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:02,956 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 02:03:02,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376002789] [2020-11-30 02:03:02,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:02,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:03:02,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510527163] [2020-11-30 02:03:02,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:03:02,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:02,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:03:02,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:03:02,958 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand 4 states. [2020-11-30 02:03:03,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:03,027 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-11-30 02:03:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:03:03,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-30 02:03:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:03,028 INFO L225 Difference]: With dead ends: 62 [2020-11-30 02:03:03,029 INFO L226 Difference]: Without dead ends: 60 [2020-11-30 02:03:03,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:03:03,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-30 02:03:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-11-30 02:03:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-30 02:03:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-11-30 02:03:03,035 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 15 [2020-11-30 02:03:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:03,036 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-11-30 02:03:03,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:03:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-11-30 02:03:03,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:03:03,043 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:03,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:03,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-30 02:03:03,044 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:03,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:03,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1718975462, now seen corresponding path program 1 times [2020-11-30 02:03:03,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:03,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369805387] [2020-11-30 02:03:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:03,105 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 02:03:03,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369805387] [2020-11-30 02:03:03,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:03,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 02:03:03,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302271939] [2020-11-30 02:03:03,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:03:03,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:03,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:03:03,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:03:03,107 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2020-11-30 02:03:03,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:03,191 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-11-30 02:03:03,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 02:03:03,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-30 02:03:03,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:03,194 INFO L225 Difference]: With dead ends: 60 [2020-11-30 02:03:03,194 INFO L226 Difference]: Without dead ends: 56 [2020-11-30 02:03:03,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:03:03,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-30 02:03:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-30 02:03:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-30 02:03:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2020-11-30 02:03:03,201 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 16 [2020-11-30 02:03:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:03,201 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2020-11-30 02:03:03,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:03:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2020-11-30 02:03:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 02:03:03,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:03,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:03,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-30 02:03:03,203 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:03,203 INFO L82 PathProgramCache]: Analyzing trace with hash -218884350, now seen corresponding path program 1 times [2020-11-30 02:03:03,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:03,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048051944] [2020-11-30 02:03:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:03,320 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:03,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048051944] [2020-11-30 02:03:03,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998502978] [2020-11-30 02:03:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/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 02:03:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:03,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 02:03:03,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:03,861 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:03:03,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 02:03:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:03,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:03,912 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:03:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:03:03,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [149874089] [2020-11-30 02:03:03,993 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-11-30 02:03:03,993 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:03:03,998 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:03:04,005 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:03:04,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:03:04,841 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:03:05,414 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-11-30 02:03:05,698 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-30 02:03:05,999 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-11-30 02:03:06,369 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-11-30 02:03:06,805 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-11-30 02:03:07,260 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-11-30 02:03:08,362 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-11-30 02:03:09,412 WARN L193 SmtUtils]: Spent 981.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2020-11-30 02:03:09,853 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2020-11-30 02:03:10,346 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-11-30 02:03:10,858 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2020-11-30 02:03:10,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:03:10,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:03:10,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2020-11-30 02:03:10,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945727879] [2020-11-30 02:03:10,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 02:03:10,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:10,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 02:03:10,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2020-11-30 02:03:10,869 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 13 states. [2020-11-30 02:03:11,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:11,411 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2020-11-30 02:03:11,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-30 02:03:11,412 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-11-30 02:03:11,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:11,413 INFO L225 Difference]: With dead ends: 103 [2020-11-30 02:03:11,413 INFO L226 Difference]: Without dead ends: 101 [2020-11-30 02:03:11,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2020-11-30 02:03:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-30 02:03:11,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 52. [2020-11-30 02:03:11,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 02:03:11,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-11-30 02:03:11,423 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 17 [2020-11-30 02:03:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:11,423 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-11-30 02:03:11,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 02:03:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-11-30 02:03:11,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 02:03:11,428 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:11,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:11,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:11,649 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:11,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1729755036, now seen corresponding path program 1 times [2020-11-30 02:03:11,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:11,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409212871] [2020-11-30 02:03:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:11,776 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 02:03:11,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409212871] [2020-11-30 02:03:11,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:11,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:03:11,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215852619] [2020-11-30 02:03:11,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:11,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:11,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:11,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:11,778 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 6 states. [2020-11-30 02:03:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:11,949 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2020-11-30 02:03:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:03:11,950 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-11-30 02:03:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:11,951 INFO L225 Difference]: With dead ends: 67 [2020-11-30 02:03:11,951 INFO L226 Difference]: Without dead ends: 65 [2020-11-30 02:03:11,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:11,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-11-30 02:03:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 47. [2020-11-30 02:03:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 02:03:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-11-30 02:03:11,957 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 17 [2020-11-30 02:03:11,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:11,958 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-11-30 02:03:11,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:11,958 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-11-30 02:03:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:03:11,959 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:11,959 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:11,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-11-30 02:03:11,960 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:11,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:11,960 INFO L82 PathProgramCache]: Analyzing trace with hash -63455725, now seen corresponding path program 1 times [2020-11-30 02:03:11,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:11,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144103541] [2020-11-30 02:03:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:12,067 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 02:03:12,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144103541] [2020-11-30 02:03:12,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:12,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:03:12,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417549089] [2020-11-30 02:03:12,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:12,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:12,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:12,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:12,069 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 6 states. [2020-11-30 02:03:12,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:12,193 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2020-11-30 02:03:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:03:12,194 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 02:03:12,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:12,194 INFO L225 Difference]: With dead ends: 47 [2020-11-30 02:03:12,195 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 02:03:12,195 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:03:12,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 02:03:12,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-11-30 02:03:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-30 02:03:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-11-30 02:03:12,200 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 18 [2020-11-30 02:03:12,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:12,200 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-11-30 02:03:12,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:12,201 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-11-30 02:03:12,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:03:12,201 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:12,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:12,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-11-30 02:03:12,202 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:12,202 INFO L82 PathProgramCache]: Analyzing trace with hash -128348465, now seen corresponding path program 1 times [2020-11-30 02:03:12,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:12,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850039757] [2020-11-30 02:03:12,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:12,297 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 02:03:12,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850039757] [2020-11-30 02:03:12,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:12,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 02:03:12,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868112948] [2020-11-30 02:03:12,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:12,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:12,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:12,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:12,299 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-11-30 02:03:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:12,444 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2020-11-30 02:03:12,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:03:12,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 02:03:12,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:12,448 INFO L225 Difference]: With dead ends: 50 [2020-11-30 02:03:12,448 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 02:03:12,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 02:03:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 02:03:12,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 02:03:12,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-30 02:03:12,451 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 18 [2020-11-30 02:03:12,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:12,452 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-30 02:03:12,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-30 02:03:12,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:03:12,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:12,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:12,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-11-30 02:03:12,453 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:12,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1796737623, now seen corresponding path program 1 times [2020-11-30 02:03:12,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:12,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716175490] [2020-11-30 02:03:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:12,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716175490] [2020-11-30 02:03:12,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614598270] [2020-11-30 02:03:12,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/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 02:03:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:12,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 02:03:12,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:12,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:12,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:03:12,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [509360819] [2020-11-30 02:03:12,964 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2020-11-30 02:03:12,964 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:03:12,964 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:03:12,965 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:03:12,965 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:03:13,572 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:03:14,090 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-11-30 02:03:14,379 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-11-30 02:03:14,650 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-11-30 02:03:15,021 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-11-30 02:03:15,315 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-11-30 02:03:15,702 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2020-11-30 02:03:16,785 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2020-11-30 02:03:17,621 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2020-11-30 02:03:17,986 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2020-11-30 02:03:18,349 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2020-11-30 02:03:18,931 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2020-11-30 02:03:19,296 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 60 [2020-11-30 02:03:19,638 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2020-11-30 02:03:20,024 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2020-11-30 02:03:20,025 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:03:20,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:03:20,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 13 [2020-11-30 02:03:20,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351497949] [2020-11-30 02:03:20,026 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-30 02:03:20,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:20,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-30 02:03:20,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-11-30 02:03:20,028 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 13 states. [2020-11-30 02:03:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:20,265 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-11-30 02:03:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 02:03:20,265 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 18 [2020-11-30 02:03:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:20,266 INFO L225 Difference]: With dead ends: 30 [2020-11-30 02:03:20,266 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:03:20,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2020-11-30 02:03:20,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:03:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:03:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:03:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:03:20,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-30 02:03:20,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:20,268 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:03:20,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-30 02:03:20,268 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:03:20,268 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:03:20,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-11-30 02:03:20,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:03:21,065 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 15 [2020-11-30 02:03:21,302 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-11-30 02:03:21,594 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 25 [2020-11-30 02:03:21,719 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 15 [2020-11-30 02:03:21,721 INFO L274 CegarLoopResult]: For program point L349(lines 349 358) no Hoare annotation was computed. [2020-11-30 02:03:21,721 INFO L270 CegarLoopResult]: At program point L250(lines 102 252) the Hoare annotation is: (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-11-30 02:03:21,721 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point L102(lines 102 252) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point L20(lines 20 374) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point L235(lines 235 243) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point L4-2(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point L4-4(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point L4-6(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,722 INFO L274 CegarLoopResult]: For program point L4-8(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point L4-10(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point L153(lines 153 161) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point L4-12(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point L54(lines 54 254) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point L4-14(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point L4-16(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point L4-18(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point L4-20(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,723 INFO L274 CegarLoopResult]: For program point L4-22(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point L4-24(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point L4-26(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point L4-28(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point L71(lines 71 95) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point L4-30(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point L4-32(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point L187(lines 187 197) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point L337(lines 337 360) no Hoare annotation was computed. [2020-11-30 02:03:21,724 INFO L274 CegarLoopResult]: For program point L106(lines 106 210) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point L24(lines 24 369) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point L289(lines 289 363) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point L223(lines 223 245) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point L141(lines 141 163) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point L42(lines 42 256) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point L125(lines 125 202) no Hoare annotation was computed. [2020-11-30 02:03:21,725 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,726 INFO L277 CegarLoopResult]: At program point L373(lines 15 375) the Hoare annotation is: true [2020-11-30 02:03:21,726 INFO L274 CegarLoopResult]: For program point L175(lines 175 199) no Hoare annotation was computed. [2020-11-30 02:03:21,726 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,726 INFO L270 CegarLoopResult]: At program point L357(lines 283 364) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~main__t~0 0))) (let ((.cse0 (let ((.cse2 (let ((.cse3 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)))) (or (and .cse3 .cse1) (and .cse3 (<= 1 ULTIMATE.start_main_~main__t~0)))))) (or (and .cse2 .cse1) (and .cse2 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~16 0))))))) (or (and .cse0 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse1) (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse0 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17))))) [2020-11-30 02:03:21,726 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,726 INFO L274 CegarLoopResult]: For program point L308(lines 308 316) no Hoare annotation was computed. [2020-11-30 02:03:21,726 INFO L274 CegarLoopResult]: For program point L325(lines 325 362) no Hoare annotation was computed. [2020-11-30 02:03:21,727 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,727 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,727 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,727 INFO L274 CegarLoopResult]: For program point L277(lines 277 364) no Hoare annotation was computed. [2020-11-30 02:03:21,727 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,727 INFO L274 CegarLoopResult]: For program point L113(lines 113 204) no Hoare annotation was computed. [2020-11-30 02:03:21,727 INFO L270 CegarLoopResult]: At program point L328(lines 32 368) the Hoare annotation is: (let ((.cse1 (< 0 ULTIMATE.start_main_~main__tagbuf_len~0)) (.cse2 (<= ULTIMATE.start_main_~main__t~0 1))) (let ((.cse0 (let ((.cse3 (or (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~13 0)) (and (<= 0 ULTIMATE.start_main_~main__tagbuf_len~0) (= ULTIMATE.start_main_~main__t~0 0)))) (.cse4 (<= 0 ULTIMATE.start_main_~main__t~0))) (or (and .cse3 .cse4 .cse1 .cse2) (and .cse3 .cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~17 0))))))) (or (and (< ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) .cse0 (<= 1 ULTIMATE.start_main_~__VERIFIER_assert__cond~17)) (and (not (= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0)) .cse1 .cse0 .cse2)))) [2020-11-30 02:03:21,728 INFO L270 CegarLoopResult]: At program point L196(lines 60 254) the Hoare annotation is: (and (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0)) (<= 1 ULTIMATE.start_main_~main__t~0) (<= ULTIMATE.start_main_~main__t~0 ULTIMATE.start_main_~main__tagbuf_len~0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~1 0))) [2020-11-30 02:03:21,728 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,728 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,728 INFO L274 CegarLoopResult]: For program point L296(lines 296 318) no Hoare annotation was computed. [2020-11-30 02:03:21,728 INFO L274 CegarLoopResult]: For program point L32(lines 32 368) no Hoare annotation was computed. [2020-11-30 02:03:21,728 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,728 INFO L274 CegarLoopResult]: For program point L83(lines 83 93) no Hoare annotation was computed. [2020-11-30 02:03:21,728 INFO L277 CegarLoopResult]: At program point L315(lines 32 368) the Hoare annotation is: true [2020-11-30 02:03:21,728 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-30 02:03:21,729 INFO L274 CegarLoopResult]: For program point L216(lines 216 251) no Hoare annotation was computed. [2020-11-30 02:03:21,729 INFO L274 CegarLoopResult]: For program point L266(lines 266 366) no Hoare annotation was computed. [2020-11-30 02:03:21,729 INFO L274 CegarLoopResult]: For program point L134(lines 134 201) no Hoare annotation was computed. [2020-11-30 02:03:21,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:03:21 BoogieIcfgContainer [2020-11-30 02:03:21,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:03:21,770 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:03:21,771 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:03:21,771 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:03:21,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:02:57" (3/4) ... [2020-11-30 02:03:21,777 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:03:21,804 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 02:03:21,805 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 02:03:21,805 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:03:21,806 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:03:21,929 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bf1dd7ac-fefc-4d53-aa64-53e972637a54/bin/utaipan/witness.graphml [2020-11-30 02:03:21,930 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:03:21,931 INFO L168 Benchmark]: Toolchain (without parser) took 26460.56 ms. Allocated memory was 94.4 MB in the beginning and 180.4 MB in the end (delta: 86.0 MB). Free memory was 64.8 MB in the beginning and 49.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 100.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,931 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:21,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.67 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 68.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.56 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 66.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,940 INFO L168 Benchmark]: Boogie Preprocessor took 63.09 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 64.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,941 INFO L168 Benchmark]: RCFGBuilder took 987.47 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 64.7 MB in the beginning and 87.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,942 INFO L168 Benchmark]: TraceAbstraction took 24714.93 ms. Allocated memory was 121.6 MB in the beginning and 180.4 MB in the end (delta: 58.7 MB). Free memory was 87.9 MB in the beginning and 56.1 MB in the end (delta: 31.8 MB). Peak memory consumption was 98.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,942 INFO L168 Benchmark]: Witness Printer took 159.57 ms. Allocated memory is still 180.4 MB. Free memory was 56.1 MB in the beginning and 49.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:21,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 94.4 MB. Free memory is still 53.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 466.67 ms. Allocated memory is still 94.4 MB. Free memory was 64.6 MB in the beginning and 68.3 MB in the end (delta: -3.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.56 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 66.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.09 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 64.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 987.47 ms. Allocated memory was 94.4 MB in the beginning and 121.6 MB in the end (delta: 27.3 MB). Free memory was 64.7 MB in the beginning and 87.9 MB in the end (delta: -23.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24714.93 ms. Allocated memory was 121.6 MB in the beginning and 180.4 MB in the end (delta: 58.7 MB). Free memory was 87.9 MB in the beginning and 56.1 MB in the end (delta: 31.8 MB). Peak memory consumption was 98.7 MB. Max. memory is 16.1 GB. * Witness Printer took 159.57 ms. Allocated memory is still 180.4 MB. Free memory was 56.1 MB in the beginning and 49.8 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && (((((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && 0 < main__tagbuf_len) && main__t <= 1) || (((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0)))) && 1 <= __VERIFIER_assert__cond) || (((!(main__t == main__tagbuf_len) && 0 < main__tagbuf_len) && (((((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && 0 < main__tagbuf_len) && main__t <= 1) || (((!(__VERIFIER_assert__cond == 0) || (0 <= main__tagbuf_len && main__t == 0)) && 0 <= main__t) && !(__VERIFIER_assert__cond == 0)))) && main__t <= 1) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 283]: Loop Invariant Derived loop invariant: ((((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0))) && 0 < main__tagbuf_len) && main__t == 0) || ((main__t < main__tagbuf_len && ((((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && main__t == 0) || (((!(__VERIFIER_assert__cond == 0) && main__t == 0) || (!(__VERIFIER_assert__cond == 0) && 1 <= main__t)) && !(__VERIFIER_assert__cond == 0)))) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && main__t <= main__tagbuf_len) && !(__VERIFIER_assert__cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 69 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 23.3s, OverallIterations: 23, TraceHistogramMax: 2, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 926 SDtfs, 1522 SDslu, 1358 SDs, 0 SdLazy, 1696 SolverSat, 168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 261 GetRequests, 104 SyntacticMatches, 10 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 644 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 335 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 19 NumberOfFragments, 240 HoareAnnotationTreeSize, 6 FomulaSimplifications, 618442 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 6 FomulaSimplificationsInter, 114646 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 18819 SizeOfPredicates, 10 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 27 InterpolantComputations, 21 PerfectInterpolantSequences, 8/24 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...