./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label52.c -s /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/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 0de75ef5525a3938ab2b1f6ef3a1b09adeba4ec3 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:36:52,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:36:52,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:36:52,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:36:52,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:36:52,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:36:52,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:36:52,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:36:52,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:36:52,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:36:52,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:36:52,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:36:52,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:36:52,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:36:52,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:36:52,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:36:52,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:36:52,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:36:52,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:36:52,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:36:52,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:36:52,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:36:52,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:36:52,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:36:52,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:36:52,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:36:52,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:36:52,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:36:52,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:36:52,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:36:52,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:36:52,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:36:52,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:36:52,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:36:52,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:36:52,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:36:52,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:36:52,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:36:52,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:36:52,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:36:52,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:36:52,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:36:52,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:36:52,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:36:52,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:36:52,129 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:36:52,129 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:36:52,130 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:36:52,130 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:36:52,130 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:36:52,130 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:36:52,130 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:36:52,130 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:36:52,130 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:36:52,131 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:36:52,131 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:36:52,131 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:36:52,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:36:52,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:36:52,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:36:52,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:36:52,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:36:52,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:36:52,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:36:52,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:36:52,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:36:52,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:36:52,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:36:52,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:36:52,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:36:52,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:36:52,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:36:52,135 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_65130367-81db-459f-b8f8-92399ece2786/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0de75ef5525a3938ab2b1f6ef3a1b09adeba4ec3 [2020-12-09 09:36:52,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:36:52,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:36:52,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:36:52,347 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:36:52,347 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:36:52,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem02_label52.c [2020-12-09 09:36:52,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/data/5759bfb8b/7b01bf3c43b14075b153224cc0cd577d/FLAG932d5dec9 [2020-12-09 09:36:52,819 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:36:52,819 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/sv-benchmarks/c/eca-rers2012/Problem02_label52.c [2020-12-09 09:36:52,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/data/5759bfb8b/7b01bf3c43b14075b153224cc0cd577d/FLAG932d5dec9 [2020-12-09 09:36:52,841 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/data/5759bfb8b/7b01bf3c43b14075b153224cc0cd577d [2020-12-09 09:36:52,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:36:52,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:36:52,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:36:52,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:36:52,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:36:52,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:36:52" (1/1) ... [2020-12-09 09:36:52,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224ac79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:52, skipping insertion in model container [2020-12-09 09:36:52,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:36:52" (1/1) ... [2020-12-09 09:36:52,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:36:52,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:36:53,132 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/sv-benchmarks/c/eca-rers2012/Problem02_label52.c[17244,17257] [2020-12-09 09:36:53,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:36:53,170 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:36:53,240 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/sv-benchmarks/c/eca-rers2012/Problem02_label52.c[17244,17257] [2020-12-09 09:36:53,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:36:53,266 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:36:53,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53 WrapperNode [2020-12-09 09:36:53,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:36:53,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:36:53,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:36:53,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:36:53,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... [2020-12-09 09:36:53,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... [2020-12-09 09:36:53,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:36:53,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:36:53,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:36:53,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:36:53,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... [2020-12-09 09:36:53,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... [2020-12-09 09:36:53,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... [2020-12-09 09:36:53,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... [2020-12-09 09:36:53,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... [2020-12-09 09:36:53,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... [2020-12-09 09:36:53,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... [2020-12-09 09:36:53,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:36:53,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:36:53,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:36:53,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:36:53,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/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 [2020-12-09 09:36:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:36:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:36:53,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:36:53,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:36:54,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:36:54,753 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 09:36:54,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:36:54 BoogieIcfgContainer [2020-12-09 09:36:54,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:36:54,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:36:54,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:36:54,758 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:36:54,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:36:52" (1/3) ... [2020-12-09 09:36:54,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c22074a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:36:54, skipping insertion in model container [2020-12-09 09:36:54,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:36:53" (2/3) ... [2020-12-09 09:36:54,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c22074a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:36:54, skipping insertion in model container [2020-12-09 09:36:54,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:36:54" (3/3) ... [2020-12-09 09:36:54,768 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label52.c [2020-12-09 09:36:54,779 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:36:54,782 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 09:36:54,789 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 09:36:54,810 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:36:54,810 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:36:54,811 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:36:54,811 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:36:54,811 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:36:54,811 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:36:54,811 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:36:54,811 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:36:54,823 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2020-12-09 09:36:54,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 09:36:54,830 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:54,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:54,831 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:54,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:54,836 INFO L82 PathProgramCache]: Analyzing trace with hash 925945670, now seen corresponding path program 1 times [2020-12-09 09:36:54,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:54,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271755293] [2020-12-09 09:36:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:55,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:36:55,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271755293] [2020-12-09 09:36:55,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:36:55,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:36:55,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371641874] [2020-12-09 09:36:55,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:55,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:55,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:55,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:55,140 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2020-12-09 09:36:55,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:55,508 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2020-12-09 09:36:55,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:55,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 09:36:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:55,518 INFO L225 Difference]: With dead ends: 251 [2020-12-09 09:36:55,518 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 09:36:55,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:55,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 09:36:55,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-12-09 09:36:55,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-12-09 09:36:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 288 transitions. [2020-12-09 09:36:55,556 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 288 transitions. Word has length 80 [2020-12-09 09:36:55,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:55,556 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 288 transitions. [2020-12-09 09:36:55,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 288 transitions. [2020-12-09 09:36:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 09:36:55,559 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:55,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:55,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:36:55,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:55,561 INFO L82 PathProgramCache]: Analyzing trace with hash 221746149, now seen corresponding path program 1 times [2020-12-09 09:36:55,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:55,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89516205] [2020-12-09 09:36:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:36:55,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89516205] [2020-12-09 09:36:55,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:36:55,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:36:55,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347512544] [2020-12-09 09:36:55,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:55,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:55,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:55,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:55,618 INFO L87 Difference]: Start difference. First operand 163 states and 288 transitions. Second operand 3 states. [2020-12-09 09:36:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:55,920 INFO L93 Difference]: Finished difference Result 485 states and 861 transitions. [2020-12-09 09:36:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:55,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 09:36:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:55,923 INFO L225 Difference]: With dead ends: 485 [2020-12-09 09:36:55,923 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 09:36:55,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:55,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 09:36:55,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 09:36:55,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 09:36:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 473 transitions. [2020-12-09 09:36:55,940 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 473 transitions. Word has length 98 [2020-12-09 09:36:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:55,940 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 473 transitions. [2020-12-09 09:36:55,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:55,940 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 473 transitions. [2020-12-09 09:36:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-09 09:36:55,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:55,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:55,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:36:55,944 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:55,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:55,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1583677175, now seen corresponding path program 1 times [2020-12-09 09:36:55,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:55,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922013700] [2020-12-09 09:36:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:36:56,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922013700] [2020-12-09 09:36:56,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:36:56,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:36:56,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586375892] [2020-12-09 09:36:56,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:56,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:56,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:56,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:56,002 INFO L87 Difference]: Start difference. First operand 323 states and 473 transitions. Second operand 3 states. [2020-12-09 09:36:56,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:56,152 INFO L93 Difference]: Finished difference Result 645 states and 945 transitions. [2020-12-09 09:36:56,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:56,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2020-12-09 09:36:56,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:56,154 INFO L225 Difference]: With dead ends: 645 [2020-12-09 09:36:56,154 INFO L226 Difference]: Without dead ends: 323 [2020-12-09 09:36:56,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-12-09 09:36:56,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2020-12-09 09:36:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-12-09 09:36:56,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 433 transitions. [2020-12-09 09:36:56,174 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 433 transitions. Word has length 99 [2020-12-09 09:36:56,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:56,175 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 433 transitions. [2020-12-09 09:36:56,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 433 transitions. [2020-12-09 09:36:56,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 09:36:56,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:56,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:56,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 09:36:56,178 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:56,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:56,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2134436994, now seen corresponding path program 1 times [2020-12-09 09:36:56,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:56,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573150669] [2020-12-09 09:36:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:36:56,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573150669] [2020-12-09 09:36:56,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:36:56,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:36:56,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007460038] [2020-12-09 09:36:56,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:56,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:56,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:56,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:56,242 INFO L87 Difference]: Start difference. First operand 323 states and 433 transitions. Second operand 3 states. [2020-12-09 09:36:56,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:56,491 INFO L93 Difference]: Finished difference Result 725 states and 980 transitions. [2020-12-09 09:36:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:56,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 09:36:56,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:56,493 INFO L225 Difference]: With dead ends: 725 [2020-12-09 09:36:56,493 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 09:36:56,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 09:36:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 09:36:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 09:36:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 528 transitions. [2020-12-09 09:36:56,503 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 528 transitions. Word has length 103 [2020-12-09 09:36:56,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:56,504 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 528 transitions. [2020-12-09 09:36:56,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 528 transitions. [2020-12-09 09:36:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-09 09:36:56,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:56,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:56,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 09:36:56,506 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:56,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:56,506 INFO L82 PathProgramCache]: Analyzing trace with hash -2118179512, now seen corresponding path program 1 times [2020-12-09 09:36:56,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:56,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587059291] [2020-12-09 09:36:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:36:56,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587059291] [2020-12-09 09:36:56,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302513900] [2020-12-09 09:36:56,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/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 [2020-12-09 09:36:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:56,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 09:36:56,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:36:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 09:36:56,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:36:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 09:36:56,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 09:36:56,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 09:36:56,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137513640] [2020-12-09 09:36:56,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:56,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:56,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:56,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:36:56,934 INFO L87 Difference]: Start difference. First operand 403 states and 528 transitions. Second operand 3 states. [2020-12-09 09:36:57,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:57,207 INFO L93 Difference]: Finished difference Result 1045 states and 1376 transitions. [2020-12-09 09:36:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:57,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-09 09:36:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:57,210 INFO L225 Difference]: With dead ends: 1045 [2020-12-09 09:36:57,210 INFO L226 Difference]: Without dead ends: 403 [2020-12-09 09:36:57,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:36:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-12-09 09:36:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2020-12-09 09:36:57,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2020-12-09 09:36:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 517 transitions. [2020-12-09 09:36:57,223 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 517 transitions. Word has length 107 [2020-12-09 09:36:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:57,223 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 517 transitions. [2020-12-09 09:36:57,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 517 transitions. [2020-12-09 09:36:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-09 09:36:57,225 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:57,226 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:57,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:36:57,427 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:57,428 INFO L82 PathProgramCache]: Analyzing trace with hash 507681121, now seen corresponding path program 1 times [2020-12-09 09:36:57,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:57,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128750227] [2020-12-09 09:36:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:36:57,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128750227] [2020-12-09 09:36:57,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:36:57,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:36:57,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138731431] [2020-12-09 09:36:57,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:57,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:57,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:57,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:57,500 INFO L87 Difference]: Start difference. First operand 403 states and 517 transitions. Second operand 3 states. [2020-12-09 09:36:57,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:57,756 INFO L93 Difference]: Finished difference Result 965 states and 1262 transitions. [2020-12-09 09:36:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:57,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-12-09 09:36:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:57,758 INFO L225 Difference]: With dead ends: 965 [2020-12-09 09:36:57,758 INFO L226 Difference]: Without dead ends: 483 [2020-12-09 09:36:57,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:57,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-12-09 09:36:57,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2020-12-09 09:36:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-09 09:36:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 551 transitions. [2020-12-09 09:36:57,767 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 551 transitions. Word has length 117 [2020-12-09 09:36:57,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:57,768 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 551 transitions. [2020-12-09 09:36:57,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 551 transitions. [2020-12-09 09:36:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-12-09 09:36:57,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:57,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:57,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 09:36:57,769 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:57,770 INFO L82 PathProgramCache]: Analyzing trace with hash 938198342, now seen corresponding path program 1 times [2020-12-09 09:36:57,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:57,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964467688] [2020-12-09 09:36:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 09:36:57,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964467688] [2020-12-09 09:36:57,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474278007] [2020-12-09 09:36:57,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/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 [2020-12-09 09:36:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:57,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 09:36:57,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:36:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 09:36:57,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:36:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 09:36:58,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 09:36:58,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 09:36:58,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230127263] [2020-12-09 09:36:58,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:58,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:58,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:58,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:36:58,080 INFO L87 Difference]: Start difference. First operand 483 states and 551 transitions. Second operand 3 states. [2020-12-09 09:36:58,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:58,282 INFO L93 Difference]: Finished difference Result 1205 states and 1367 transitions. [2020-12-09 09:36:58,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:58,282 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2020-12-09 09:36:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:58,285 INFO L225 Difference]: With dead ends: 1205 [2020-12-09 09:36:58,285 INFO L226 Difference]: Without dead ends: 643 [2020-12-09 09:36:58,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:36:58,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2020-12-09 09:36:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2020-12-09 09:36:58,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-12-09 09:36:58,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 713 transitions. [2020-12-09 09:36:58,297 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 713 transitions. Word has length 128 [2020-12-09 09:36:58,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:58,297 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 713 transitions. [2020-12-09 09:36:58,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:58,297 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 713 transitions. [2020-12-09 09:36:58,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-12-09 09:36:58,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:58,300 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:58,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:36:58,500 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:58,501 INFO L82 PathProgramCache]: Analyzing trace with hash 68481141, now seen corresponding path program 1 times [2020-12-09 09:36:58,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:58,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783790217] [2020-12-09 09:36:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-12-09 09:36:58,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783790217] [2020-12-09 09:36:58,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:36:58,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:36:58,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122286461] [2020-12-09 09:36:58,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:58,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:58,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:58,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:58,570 INFO L87 Difference]: Start difference. First operand 643 states and 713 transitions. Second operand 3 states. [2020-12-09 09:36:58,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:58,793 INFO L93 Difference]: Finished difference Result 1365 states and 1536 transitions. [2020-12-09 09:36:58,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:58,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2020-12-09 09:36:58,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:58,797 INFO L225 Difference]: With dead ends: 1365 [2020-12-09 09:36:58,797 INFO L226 Difference]: Without dead ends: 723 [2020-12-09 09:36:58,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:58,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-09 09:36:58,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2020-12-09 09:36:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-12-09 09:36:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 790 transitions. [2020-12-09 09:36:58,808 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 790 transitions. Word has length 205 [2020-12-09 09:36:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:58,809 INFO L481 AbstractCegarLoop]: Abstraction has 723 states and 790 transitions. [2020-12-09 09:36:58,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 790 transitions. [2020-12-09 09:36:58,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-12-09 09:36:58,811 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:58,811 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:58,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 09:36:58,811 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:58,811 INFO L82 PathProgramCache]: Analyzing trace with hash 962366682, now seen corresponding path program 1 times [2020-12-09 09:36:58,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:58,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728783427] [2020-12-09 09:36:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-12-09 09:36:58,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728783427] [2020-12-09 09:36:58,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610324760] [2020-12-09 09:36:58,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:36:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:59,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 09:36:59,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:36:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-12-09 09:36:59,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:36:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2020-12-09 09:36:59,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 09:36:59,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 09:36:59,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230267712] [2020-12-09 09:36:59,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:59,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:59,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:59,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:36:59,317 INFO L87 Difference]: Start difference. First operand 723 states and 790 transitions. Second operand 3 states. [2020-12-09 09:36:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:59,491 INFO L93 Difference]: Finished difference Result 1285 states and 1414 transitions. [2020-12-09 09:36:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:59,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-12-09 09:36:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:59,496 INFO L225 Difference]: With dead ends: 1285 [2020-12-09 09:36:59,496 INFO L226 Difference]: Without dead ends: 1283 [2020-12-09 09:36:59,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:36:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2020-12-09 09:36:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1203. [2020-12-09 09:36:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-12-09 09:36:59,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1330 transitions. [2020-12-09 09:36:59,513 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1330 transitions. Word has length 215 [2020-12-09 09:36:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:59,514 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1330 transitions. [2020-12-09 09:36:59,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:59,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1330 transitions. [2020-12-09 09:36:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-12-09 09:36:59,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:59,517 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:59,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:36:59,717 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:59,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:59,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1462074346, now seen corresponding path program 1 times [2020-12-09 09:36:59,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:59,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020849835] [2020-12-09 09:36:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:36:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:36:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-09 09:36:59,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020849835] [2020-12-09 09:36:59,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:36:59,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:36:59,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316504292] [2020-12-09 09:36:59,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:36:59,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:36:59,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:36:59,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:59,807 INFO L87 Difference]: Start difference. First operand 1203 states and 1330 transitions. Second operand 3 states. [2020-12-09 09:36:59,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:36:59,975 INFO L93 Difference]: Finished difference Result 2005 states and 2206 transitions. [2020-12-09 09:36:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:36:59,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 225 [2020-12-09 09:36:59,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:36:59,979 INFO L225 Difference]: With dead ends: 2005 [2020-12-09 09:36:59,980 INFO L226 Difference]: Without dead ends: 1123 [2020-12-09 09:36:59,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:36:59,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2020-12-09 09:36:59,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2020-12-09 09:36:59,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-12-09 09:36:59,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1218 transitions. [2020-12-09 09:36:59,995 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1218 transitions. Word has length 225 [2020-12-09 09:36:59,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:36:59,996 INFO L481 AbstractCegarLoop]: Abstraction has 1123 states and 1218 transitions. [2020-12-09 09:36:59,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:36:59,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1218 transitions. [2020-12-09 09:36:59,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-12-09 09:36:59,998 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:36:59,998 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:36:59,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 09:36:59,999 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:36:59,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:36:59,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1059384570, now seen corresponding path program 1 times [2020-12-09 09:36:59,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:36:59,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719999827] [2020-12-09 09:36:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:37:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 09:37:00,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719999827] [2020-12-09 09:37:00,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:37:00,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:37:00,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305658330] [2020-12-09 09:37:00,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:37:00,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:37:00,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:37:00,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:37:00,109 INFO L87 Difference]: Start difference. First operand 1123 states and 1218 transitions. Second operand 4 states. [2020-12-09 09:37:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:00,276 INFO L93 Difference]: Finished difference Result 2165 states and 2353 transitions. [2020-12-09 09:37:00,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:37:00,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 228 [2020-12-09 09:37:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:00,279 INFO L225 Difference]: With dead ends: 2165 [2020-12-09 09:37:00,280 INFO L226 Difference]: Without dead ends: 803 [2020-12-09 09:37:00,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:37:00,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-12-09 09:37:00,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2020-12-09 09:37:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-12-09 09:37:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 859 transitions. [2020-12-09 09:37:00,291 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 859 transitions. Word has length 228 [2020-12-09 09:37:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:00,292 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 859 transitions. [2020-12-09 09:37:00,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:37:00,292 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 859 transitions. [2020-12-09 09:37:00,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-12-09 09:37:00,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:37:00,294 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:37:00,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 09:37:00,294 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:37:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:37:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash 923691584, now seen corresponding path program 1 times [2020-12-09 09:37:00,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:37:00,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094909010] [2020-12-09 09:37:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:37:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 212 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:37:00,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094909010] [2020-12-09 09:37:00,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794294245] [2020-12-09 09:37:00,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:37:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:00,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 09:37:00,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:37:00,840 INFO L398 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 2, 1] term [2020-12-09 09:37:00,840 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:37:01,091 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 311 proven. 114 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 09:37:01,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:37:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 272 proven. 153 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-09 09:37:01,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [551323944] [2020-12-09 09:37:01,488 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2020-12-09 09:37:01,488 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:37:01,493 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:37:01,497 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:37:01,498 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:37:07,667 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 147 [2020-12-09 09:37:09,919 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:10,043 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:10,200 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:10,327 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:10,522 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-12-09 09:37:10,646 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:10,778 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:10,901 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:11,036 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-12-09 09:37:14,656 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:14,774 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:14,926 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:15,046 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:15,232 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 148 [2020-12-09 09:37:15,351 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:15,480 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:15,598 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-12-09 09:37:19,303 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 25 [2020-12-09 09:37:19,399 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 9704 conjuctions. This might take some time... [2020-12-09 09:37:19,673 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 292 conjuctions. [2020-12-09 09:37:19,679 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 25 [2020-12-09 09:37:19,754 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 9704 conjuctions. This might take some time... [2020-12-09 09:37:20,033 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 292 conjuctions. [2020-12-09 09:37:20,127 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 25 [2020-12-09 09:37:20,201 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 9704 conjuctions. This might take some time... [2020-12-09 09:37:20,481 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 292 conjuctions. [2020-12-09 09:37:23,827 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:37:24,153 WARN L197 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2020-12-09 09:37:24,346 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 90 [2020-12-09 09:37:24,677 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2020-12-09 09:37:24,911 WARN L197 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-12-09 09:37:25,179 WARN L197 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 108 [2020-12-09 09:37:25,606 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-12-09 09:37:28,272 WARN L197 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-12-09 09:37:39,551 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:37:39,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:37:39,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2020-12-09 09:37:39,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064511915] [2020-12-09 09:37:39,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 09:37:39,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:37:39,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 09:37:39,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2020-12-09 09:37:39,553 INFO L87 Difference]: Start difference. First operand 803 states and 859 transitions. Second operand 14 states. [2020-12-09 09:37:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:40,238 INFO L93 Difference]: Finished difference Result 1046 states and 1120 transitions. [2020-12-09 09:37:40,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:37:40,239 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 278 [2020-12-09 09:37:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:40,239 INFO L225 Difference]: With dead ends: 1046 [2020-12-09 09:37:40,239 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:37:40,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 589 SyntacticMatches, 229 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3552 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2020-12-09 09:37:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:37:40,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:37:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:37:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:37:40,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 278 [2020-12-09 09:37:40,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:40,241 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:37:40,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 09:37:40,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:37:40,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:37:40,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:37:40,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 09:37:40,607 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-09 09:37:40,766 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-12-09 09:37:40,768 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2020-12-09 09:37:40,768 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2020-12-09 09:37:40,768 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2020-12-09 09:37:40,768 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2020-12-09 09:37:40,768 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2020-12-09 09:37:40,768 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2020-12-09 09:37:40,768 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2020-12-09 09:37:40,769 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 494) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2020-12-09 09:37:40,770 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2020-12-09 09:37:40,771 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse5 (<= 9 ~a28~0)) (.cse1 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 ~a11~0)) (.cse6 (= ~a25~0 0)) (.cse7 (= ~a21~0 1)) (.cse8 (= ~a11~0 1)) (.cse9 (<= ~a28~0 7)) (.cse0 (= ~a19~0 1)) (.cse10 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse0 .cse6 .cse7 .cse2 .cse3) (and .cse5 .cse0 .cse8 .cse2 .cse3) (and .cse4 .cse6 .cse7 .cse9 .cse2) (and .cse1 .cse10 .cse2 .cse3) (and .cse4 .cse6 .cse7 (not .cse0) (not (= 3 ULTIMATE.start_calculate_output_~input)) .cse2 (= ~a28~0 8)) (and .cse8 .cse9 .cse2) (and .cse0 .cse10 .cse2) (and (<= ~a17~0 7) .cse3))) [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse5 (<= 9 ~a28~0)) (.cse1 (<= 10 ~a28~0)) (.cse4 (= ~a25~0 ~a11~0)) (.cse6 (= ~a25~0 0)) (.cse7 (= ~a21~0 1)) (.cse8 (= ~a11~0 1)) (.cse9 (<= ~a28~0 7)) (.cse0 (= ~a19~0 1)) (.cse10 (= ~a25~0 1)) (.cse2 (<= ~a17~0 8)) (.cse3 (<= ~a28~0 10))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse0 .cse6 .cse7 .cse2 .cse3) (and .cse5 .cse0 .cse8 .cse2 .cse3) (and .cse4 .cse6 .cse7 .cse9 .cse2) (and .cse1 .cse10 .cse2 .cse3) (and .cse4 .cse6 .cse7 (not .cse0) (not (= 3 ULTIMATE.start_calculate_output_~input)) .cse2 (= ~a28~0 8)) (and .cse8 .cse9 .cse2) (and .cse0 .cse10 .cse2) (and (<= ~a17~0 7) .cse3))) [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2020-12-09 09:37:40,772 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L490-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L493-1(lines 39 608) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2020-12-09 09:37:40,773 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2020-12-09 09:37:40,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:37:40 BoogieIcfgContainer [2020-12-09 09:37:40,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:37:40,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:37:40,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:37:40,787 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:37:40,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:36:54" (3/4) ... [2020-12-09 09:37:40,789 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:37:40,805 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2020-12-09 09:37:40,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 09:37:40,808 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 09:37:40,809 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 09:37:40,886 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_65130367-81db-459f-b8f8-92399ece2786/bin/utaipan/witness.graphml [2020-12-09 09:37:40,886 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:37:40,887 INFO L168 Benchmark]: Toolchain (without parser) took 48043.37 ms. Allocated memory was 94.4 MB in the beginning and 509.6 MB in the end (delta: 415.2 MB). Free memory was 70.7 MB in the beginning and 265.2 MB in the end (delta: -194.5 MB). Peak memory consumption was 218.9 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:40,887 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 67.1 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:37:40,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 422.73 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 68.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:40,888 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.37 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 62.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:40,888 INFO L168 Benchmark]: Boogie Preprocessor took 58.24 ms. Allocated memory is still 94.4 MB. Free memory was 62.9 MB in the beginning and 58.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:40,888 INFO L168 Benchmark]: RCFGBuilder took 1361.11 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 58.7 MB in the beginning and 33.9 MB in the end (delta: 24.7 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:40,889 INFO L168 Benchmark]: TraceAbstraction took 46030.84 ms. Allocated memory was 115.3 MB in the beginning and 509.6 MB in the end (delta: 394.3 MB). Free memory was 33.9 MB in the beginning and 279.9 MB in the end (delta: -246.0 MB). Peak memory consumption was 148.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:40,889 INFO L168 Benchmark]: Witness Printer took 99.40 ms. Allocated memory is still 509.6 MB. Free memory was 279.9 MB in the beginning and 265.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:40,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 67.1 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 422.73 ms. Allocated memory is still 94.4 MB. Free memory was 70.4 MB in the beginning and 68.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 26.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.37 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 62.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.24 ms. Allocated memory is still 94.4 MB. Free memory was 62.9 MB in the beginning and 58.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1361.11 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 58.7 MB in the beginning and 33.9 MB in the end (delta: 24.7 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 46030.84 ms. Allocated memory was 115.3 MB in the beginning and 509.6 MB in the end (delta: 394.3 MB). Free memory was 33.9 MB in the beginning and 279.9 MB in the end (delta: -246.0 MB). Peak memory consumption was 148.2 MB. Max. memory is 16.1 GB. * Witness Printer took 99.40 ms. Allocated memory is still 509.6 MB. Free memory was 279.9 MB in the beginning and 265.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 494]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && 10 <= a28) && a17 <= 8) && a28 <= 10) || ((((((a25 == a11 && 9 <= a28) && a19 == 1) && a25 == 0) && a21 == 1) && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a19 == 1) && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a25 == 0) && a21 == 1) && a28 <= 7) && a17 <= 8)) || (((10 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((((((a25 == a11 && a25 == 0) && a21 == 1) && !(a19 == 1)) && !(3 == input)) && a17 <= 8) && a28 == 8)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && a25 == 1) && a17 <= 8)) || (a17 <= 7 && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((a19 == 1 && 10 <= a28) && a17 <= 8) && a28 <= 10) || ((((((a25 == a11 && 9 <= a28) && a19 == 1) && a25 == 0) && a21 == 1) && a17 <= 8) && a28 <= 10)) || ((((9 <= a28 && a19 == 1) && a11 == 1) && a17 <= 8) && a28 <= 10)) || ((((a25 == a11 && a25 == 0) && a21 == 1) && a28 <= 7) && a17 <= 8)) || (((10 <= a28 && a25 == 1) && a17 <= 8) && a28 <= 10)) || ((((((a25 == a11 && a25 == 0) && a21 == 1) && !(a19 == 1)) && !(3 == input)) && a17 <= 8) && a28 == 8)) || ((a11 == 1 && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && a25 == 1) && a17 <= 8)) || (a17 <= 7 && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 45.6s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 831 SDtfs, 1121 SDslu, 97 SDs, 0 SdLazy, 3264 SolverSat, 487 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1771 GetRequests, 1494 SyntacticMatches, 231 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3557 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1203occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 80 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 41 NumberOfFragments, 265 HoareAnnotationTreeSize, 3 FomulaSimplifications, 358 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 104 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 2611 NumberOfCodeBlocks, 2611 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 3319 ConstructedInterpolants, 0 QuantifiedInterpolants, 3112535 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1474 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 20 InterpolantComputations, 14 PerfectInterpolantSequences, 2566/3191 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...