./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_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_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c -s /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/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 2a6f9dd10b9200c61377ed7a907ef50ee4969a78 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 05:21:07,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:21:07,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:21:07,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:21:07,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:21:07,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:21:07,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:21:07,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:21:07,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:21:07,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:21:07,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:21:07,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:21:07,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:21:07,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:21:07,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:21:07,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:21:07,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:21:07,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:21:07,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:21:07,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:21:07,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:21:07,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:21:07,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:21:07,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:21:07,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:21:07,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:21:07,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:21:07,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:21:07,918 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:21:07,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:21:07,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:21:07,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:21:07,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:21:07,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:21:07,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:21:07,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:21:07,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:21:07,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:21:07,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:21:07,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:21:07,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:21:07,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:21:07,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:21:07,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:21:07,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:21:07,949 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:21:07,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:21:07,950 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:21:07,950 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:21:07,950 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:21:07,950 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:21:07,950 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:21:07,951 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:21:07,951 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:21:07,951 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:21:07,951 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:21:07,951 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:21:07,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:21:07,952 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:21:07,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:21:07,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:21:07,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:21:07,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:21:07,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:21:07,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:21:07,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:21:07,953 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:21:07,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:21:07,954 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:21:07,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:21:07,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:21:07,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:21:07,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:21:07,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:21:07,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:21:07,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:21:07,955 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:21:07,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:21:07,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:21:07,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:21:07,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:21:07,956 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_de43dcc7-16b8-432d-ad15-0af3073dfcaa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a6f9dd10b9200c61377ed7a907ef50ee4969a78 [2020-12-09 05:21:08,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:21:08,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:21:08,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:21:08,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:21:08,138 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:21:08,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label52.c [2020-12-09 05:21:08,186 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/data/4b8860344/d934645cde2b44ccab8d6fd92b504378/FLAG9f4e57008 [2020-12-09 05:21:08,589 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:21:08,590 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/sv-benchmarks/c/eca-rers2012/Problem01_label52.c [2020-12-09 05:21:08,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/data/4b8860344/d934645cde2b44ccab8d6fd92b504378/FLAG9f4e57008 [2020-12-09 05:21:08,963 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/data/4b8860344/d934645cde2b44ccab8d6fd92b504378 [2020-12-09 05:21:08,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:21:08,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:21:08,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:21:08,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:21:08,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:21:08,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:21:08" (1/1) ... [2020-12-09 05:21:08,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62e1e0cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:08, skipping insertion in model container [2020-12-09 05:21:08,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:21:08" (1/1) ... [2020-12-09 05:21:08,984 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:21:09,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:21:09,246 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_de43dcc7-16b8-432d-ad15-0af3073dfcaa/sv-benchmarks/c/eca-rers2012/Problem01_label52.c[21213,21226] [2020-12-09 05:21:09,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:21:09,265 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:21:09,324 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_de43dcc7-16b8-432d-ad15-0af3073dfcaa/sv-benchmarks/c/eca-rers2012/Problem01_label52.c[21213,21226] [2020-12-09 05:21:09,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:21:09,339 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:21:09,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09 WrapperNode [2020-12-09 05:21:09,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:21:09,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:21:09,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:21:09,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:21:09,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... [2020-12-09 05:21:09,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... [2020-12-09 05:21:09,391 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:21:09,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:21:09,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:21:09,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:21:09,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... [2020-12-09 05:21:09,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... [2020-12-09 05:21:09,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... [2020-12-09 05:21:09,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... [2020-12-09 05:21:09,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... [2020-12-09 05:21:09,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... [2020-12-09 05:21:09,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... [2020-12-09 05:21:09,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:21:09,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:21:09,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:21:09,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:21:09,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/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 05:21:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:21:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:21:09,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:21:09,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:21:10,747 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:21:10,748 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 05:21:10,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:21:10 BoogieIcfgContainer [2020-12-09 05:21:10,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:21:10,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:21:10,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:21:10,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:21:10,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:21:08" (1/3) ... [2020-12-09 05:21:10,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a66cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:21:10, skipping insertion in model container [2020-12-09 05:21:10,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:21:09" (2/3) ... [2020-12-09 05:21:10,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a66cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:21:10, skipping insertion in model container [2020-12-09 05:21:10,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:21:10" (3/3) ... [2020-12-09 05:21:10,758 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-12-09 05:21:10,771 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:21:10,774 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:21:10,784 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:21:10,805 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:21:10,805 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:21:10,806 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:21:10,806 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:21:10,806 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:21:10,806 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:21:10,806 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:21:10,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:21:10,819 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 05:21:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 05:21:10,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:10,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:21:10,827 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:10,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1806905432, now seen corresponding path program 1 times [2020-12-09 05:21:10,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:10,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157071370] [2020-12-09 05:21:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:11,107 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 05:21:11,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157071370] [2020-12-09 05:21:11,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:11,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:21:11,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693175143] [2020-12-09 05:21:11,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:11,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:11,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:11,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:21:11,127 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 05:21:11,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:11,454 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 05:21:11,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:11,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 05:21:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:11,466 INFO L225 Difference]: With dead ends: 224 [2020-12-09 05:21:11,466 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 05:21:11,469 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 05:21:11,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 05:21:11,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 05:21:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 05:21:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-12-09 05:21:11,513 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-12-09 05:21:11,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:11,513 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-12-09 05:21:11,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-12-09 05:21:11,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-09 05:21:11,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:11,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:21:11,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:21:11,517 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:11,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1694602814, now seen corresponding path program 1 times [2020-12-09 05:21:11,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:11,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270848251] [2020-12-09 05:21:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:21:11,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270848251] [2020-12-09 05:21:11,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:11,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:21:11,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007242511] [2020-12-09 05:21:11,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:11,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:11,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:11,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:21:11,562 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-12-09 05:21:11,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:11,796 INFO L93 Difference]: Finished difference Result 433 states and 775 transitions. [2020-12-09 05:21:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:11,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-09 05:21:11,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:11,800 INFO L225 Difference]: With dead ends: 433 [2020-12-09 05:21:11,800 INFO L226 Difference]: Without dead ends: 289 [2020-12-09 05:21:11,801 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 05:21:11,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-09 05:21:11,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2020-12-09 05:21:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 05:21:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 480 transitions. [2020-12-09 05:21:11,828 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 480 transitions. Word has length 76 [2020-12-09 05:21:11,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:11,828 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 480 transitions. [2020-12-09 05:21:11,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:11,829 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 480 transitions. [2020-12-09 05:21:11,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-09 05:21:11,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:11,832 INFO L422 BasicCegarLoop]: trace histogram [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 05:21:11,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:21:11,832 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:11,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:11,833 INFO L82 PathProgramCache]: Analyzing trace with hash 348748340, now seen corresponding path program 1 times [2020-12-09 05:21:11,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:11,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842606409] [2020-12-09 05:21:11,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:21:11,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842606409] [2020-12-09 05:21:11,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:11,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:21:11,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986012897] [2020-12-09 05:21:11,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:11,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:21:11,874 INFO L87 Difference]: Start difference. First operand 287 states and 480 transitions. Second operand 3 states. [2020-12-09 05:21:12,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:12,117 INFO L93 Difference]: Finished difference Result 857 states and 1437 transitions. [2020-12-09 05:21:12,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:12,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-09 05:21:12,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:12,121 INFO L225 Difference]: With dead ends: 857 [2020-12-09 05:21:12,121 INFO L226 Difference]: Without dead ends: 571 [2020-12-09 05:21:12,122 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 05:21:12,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-09 05:21:12,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-12-09 05:21:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 05:21:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 886 transitions. [2020-12-09 05:21:12,144 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 886 transitions. Word has length 80 [2020-12-09 05:21:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:12,144 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 886 transitions. [2020-12-09 05:21:12,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 886 transitions. [2020-12-09 05:21:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-09 05:21:12,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:12,147 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:21:12,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:21:12,147 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:12,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:12,148 INFO L82 PathProgramCache]: Analyzing trace with hash -143895987, now seen corresponding path program 1 times [2020-12-09 05:21:12,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:12,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678431577] [2020-12-09 05:21:12,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:21:12,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678431577] [2020-12-09 05:21:12,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:12,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:21:12,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7117740] [2020-12-09 05:21:12,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:21:12,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:12,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:21:12,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:21:12,202 INFO L87 Difference]: Start difference. First operand 571 states and 886 transitions. Second operand 4 states. [2020-12-09 05:21:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:12,561 INFO L93 Difference]: Finished difference Result 1425 states and 2187 transitions. [2020-12-09 05:21:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:21:12,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-09 05:21:12,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:12,566 INFO L225 Difference]: With dead ends: 1425 [2020-12-09 05:21:12,566 INFO L226 Difference]: Without dead ends: 855 [2020-12-09 05:21:12,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:21:12,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2020-12-09 05:21:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 713. [2020-12-09 05:21:12,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 05:21:12,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1058 transitions. [2020-12-09 05:21:12,589 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1058 transitions. Word has length 83 [2020-12-09 05:21:12,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:12,589 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1058 transitions. [2020-12-09 05:21:12,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:21:12,590 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1058 transitions. [2020-12-09 05:21:12,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-09 05:21:12,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:12,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:21:12,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:21:12,593 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:12,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:12,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1756796036, now seen corresponding path program 1 times [2020-12-09 05:21:12,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:12,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480980619] [2020-12-09 05:21:12,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:21:12,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480980619] [2020-12-09 05:21:12,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:12,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:21:12,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100221563] [2020-12-09 05:21:12,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:12,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:12,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:12,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:21:12,644 INFO L87 Difference]: Start difference. First operand 713 states and 1058 transitions. Second operand 3 states. [2020-12-09 05:21:12,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:12,978 INFO L93 Difference]: Finished difference Result 1922 states and 2892 transitions. [2020-12-09 05:21:12,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:12,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-09 05:21:12,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:12,983 INFO L225 Difference]: With dead ends: 1922 [2020-12-09 05:21:12,984 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 05:21:12,985 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 05:21:12,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 05:21:13,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2020-12-09 05:21:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 05:21:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1718 transitions. [2020-12-09 05:21:13,007 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1718 transitions. Word has length 84 [2020-12-09 05:21:13,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:13,007 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1718 transitions. [2020-12-09 05:21:13,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:13,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1718 transitions. [2020-12-09 05:21:13,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 05:21:13,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:13,009 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 05:21:13,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:21:13,010 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:13,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:13,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1140298203, now seen corresponding path program 1 times [2020-12-09 05:21:13,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:13,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923383078] [2020-12-09 05:21:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:13,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:21:13,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923383078] [2020-12-09 05:21:13,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:13,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:21:13,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137544444] [2020-12-09 05:21:13,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:13,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:13,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:13,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:21:13,050 INFO L87 Difference]: Start difference. First operand 1139 states and 1718 transitions. Second operand 3 states. [2020-12-09 05:21:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:13,357 INFO L93 Difference]: Finished difference Result 2419 states and 3607 transitions. [2020-12-09 05:21:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:13,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-09 05:21:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:13,365 INFO L225 Difference]: With dead ends: 2419 [2020-12-09 05:21:13,365 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 05:21:13,367 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 05:21:13,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 05:21:13,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1210. [2020-12-09 05:21:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 05:21:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1777 transitions. [2020-12-09 05:21:13,399 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1777 transitions. Word has length 86 [2020-12-09 05:21:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:13,399 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1777 transitions. [2020-12-09 05:21:13,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1777 transitions. [2020-12-09 05:21:13,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-09 05:21:13,402 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:13,402 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-12-09 05:21:13,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:21:13,402 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:13,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:13,403 INFO L82 PathProgramCache]: Analyzing trace with hash -886280169, now seen corresponding path program 1 times [2020-12-09 05:21:13,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:13,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659962400] [2020-12-09 05:21:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 05:21:13,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659962400] [2020-12-09 05:21:13,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:13,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:21:13,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482640966] [2020-12-09 05:21:13,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:13,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:13,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:13,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:21:13,443 INFO L87 Difference]: Start difference. First operand 1210 states and 1777 transitions. Second operand 3 states. [2020-12-09 05:21:13,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:13,708 INFO L93 Difference]: Finished difference Result 2632 states and 3857 transitions. [2020-12-09 05:21:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:13,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2020-12-09 05:21:13,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:13,716 INFO L225 Difference]: With dead ends: 2632 [2020-12-09 05:21:13,716 INFO L226 Difference]: Without dead ends: 1352 [2020-12-09 05:21:13,718 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 05:21:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-12-09 05:21:13,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2020-12-09 05:21:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-12-09 05:21:13,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1739 transitions. [2020-12-09 05:21:13,750 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1739 transitions. Word has length 87 [2020-12-09 05:21:13,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:13,750 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1739 transitions. [2020-12-09 05:21:13,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:13,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1739 transitions. [2020-12-09 05:21:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-12-09 05:21:13,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:13,753 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:21:13,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:21:13,753 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:13,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:13,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1043314323, now seen corresponding path program 1 times [2020-12-09 05:21:13,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:13,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549311809] [2020-12-09 05:21:13,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:21:13,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549311809] [2020-12-09 05:21:13,804 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:13,804 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:21:13,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390862884] [2020-12-09 05:21:13,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:21:13,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:13,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:21:13,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:21:13,805 INFO L87 Difference]: Start difference. First operand 1352 states and 1739 transitions. Second operand 4 states. [2020-12-09 05:21:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:14,148 INFO L93 Difference]: Finished difference Result 2703 states and 3477 transitions. [2020-12-09 05:21:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:21:14,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-12-09 05:21:14,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:14,154 INFO L225 Difference]: With dead ends: 2703 [2020-12-09 05:21:14,154 INFO L226 Difference]: Without dead ends: 1352 [2020-12-09 05:21:14,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:21:14,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-12-09 05:21:14,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2020-12-09 05:21:14,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-12-09 05:21:14,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1686 transitions. [2020-12-09 05:21:14,182 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1686 transitions. Word has length 90 [2020-12-09 05:21:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:14,182 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1686 transitions. [2020-12-09 05:21:14,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:21:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1686 transitions. [2020-12-09 05:21:14,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-09 05:21:14,184 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:14,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:21:14,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:21:14,184 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:14,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:14,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1202877934, now seen corresponding path program 1 times [2020-12-09 05:21:14,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:14,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838240833] [2020-12-09 05:21:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 05:21:14,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838240833] [2020-12-09 05:21:14,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:14,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:21:14,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145604228] [2020-12-09 05:21:14,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:14,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:14,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:14,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:21:14,269 INFO L87 Difference]: Start difference. First operand 1352 states and 1686 transitions. Second operand 3 states. [2020-12-09 05:21:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:14,495 INFO L93 Difference]: Finished difference Result 3129 states and 3900 transitions. [2020-12-09 05:21:14,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:14,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-09 05:21:14,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:14,502 INFO L225 Difference]: With dead ends: 3129 [2020-12-09 05:21:14,502 INFO L226 Difference]: Without dead ends: 1778 [2020-12-09 05:21:14,504 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 05:21:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2020-12-09 05:21:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1352. [2020-12-09 05:21:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-12-09 05:21:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1662 transitions. [2020-12-09 05:21:14,527 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1662 transitions. Word has length 108 [2020-12-09 05:21:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:14,527 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1662 transitions. [2020-12-09 05:21:14,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:14,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1662 transitions. [2020-12-09 05:21:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-12-09 05:21:14,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:14,531 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 05:21:14,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:21:14,531 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:14,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1080125001, now seen corresponding path program 1 times [2020-12-09 05:21:14,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:14,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335750130] [2020-12-09 05:21:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-12-09 05:21:14,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335750130] [2020-12-09 05:21:14,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:14,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:21:14,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101762369] [2020-12-09 05:21:14,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:14,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:14,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:14,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:21:14,632 INFO L87 Difference]: Start difference. First operand 1352 states and 1662 transitions. Second operand 3 states. [2020-12-09 05:21:14,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:14,896 INFO L93 Difference]: Finished difference Result 3058 states and 3766 transitions. [2020-12-09 05:21:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:14,896 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-12-09 05:21:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:14,904 INFO L225 Difference]: With dead ends: 3058 [2020-12-09 05:21:14,904 INFO L226 Difference]: Without dead ends: 1707 [2020-12-09 05:21:14,905 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 05:21:14,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-12-09 05:21:14,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 997. [2020-12-09 05:21:14,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 05:21:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1238 transitions. [2020-12-09 05:21:14,930 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1238 transitions. Word has length 176 [2020-12-09 05:21:14,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:14,930 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1238 transitions. [2020-12-09 05:21:14,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1238 transitions. [2020-12-09 05:21:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-09 05:21:14,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:14,933 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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] [2020-12-09 05:21:14,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 05:21:14,933 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:14,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:14,933 INFO L82 PathProgramCache]: Analyzing trace with hash -27485095, now seen corresponding path program 1 times [2020-12-09 05:21:14,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:14,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94503866] [2020-12-09 05:21:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-09 05:21:15,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94503866] [2020-12-09 05:21:15,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:15,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 05:21:15,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189055886] [2020-12-09 05:21:15,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:21:15,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:15,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:21:15,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:21:15,072 INFO L87 Difference]: Start difference. First operand 997 states and 1238 transitions. Second operand 5 states. [2020-12-09 05:21:15,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:15,362 INFO L93 Difference]: Finished difference Result 2164 states and 2657 transitions. [2020-12-09 05:21:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:21:15,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2020-12-09 05:21:15,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:15,367 INFO L225 Difference]: With dead ends: 2164 [2020-12-09 05:21:15,367 INFO L226 Difference]: Without dead ends: 1168 [2020-12-09 05:21:15,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:21:15,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-12-09 05:21:15,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1068. [2020-12-09 05:21:15,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 05:21:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1291 transitions. [2020-12-09 05:21:15,384 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1291 transitions. Word has length 219 [2020-12-09 05:21:15,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:15,385 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1291 transitions. [2020-12-09 05:21:15,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:21:15,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1291 transitions. [2020-12-09 05:21:15,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-12-09 05:21:15,387 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:15,388 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 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, 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 05:21:15,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 05:21:15,388 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:15,388 INFO L82 PathProgramCache]: Analyzing trace with hash -194111272, now seen corresponding path program 1 times [2020-12-09 05:21:15,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:15,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132717632] [2020-12-09 05:21:15,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-12-09 05:21:15,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132717632] [2020-12-09 05:21:15,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:21:15,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:21:15,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111009347] [2020-12-09 05:21:15,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:15,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:15,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:15,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:21:15,497 INFO L87 Difference]: Start difference. First operand 1068 states and 1291 transitions. Second operand 3 states. [2020-12-09 05:21:15,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:15,667 INFO L93 Difference]: Finished difference Result 2135 states and 2581 transitions. [2020-12-09 05:21:15,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:15,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2020-12-09 05:21:15,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:15,671 INFO L225 Difference]: With dead ends: 2135 [2020-12-09 05:21:15,671 INFO L226 Difference]: Without dead ends: 1068 [2020-12-09 05:21:15,672 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 05:21:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-12-09 05:21:15,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1068. [2020-12-09 05:21:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 05:21:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1259 transitions. [2020-12-09 05:21:15,695 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1259 transitions. Word has length 232 [2020-12-09 05:21:15,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:15,695 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1259 transitions. [2020-12-09 05:21:15,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1259 transitions. [2020-12-09 05:21:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-09 05:21:15,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:21:15,700 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 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, 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] [2020-12-09 05:21:15,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 05:21:15,701 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:21:15,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:21:15,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1646211440, now seen corresponding path program 1 times [2020-12-09 05:21:15,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:21:15,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672838942] [2020-12-09 05:21:15,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:21:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 05:21:15,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672838942] [2020-12-09 05:21:15,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373104583] [2020-12-09 05:21:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/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 05:21:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:21:16,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:21:16,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:21:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-12-09 05:21:16,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:21:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-12-09 05:21:16,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:21:16,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2020-12-09 05:21:16,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010961733] [2020-12-09 05:21:16,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:21:16,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:21:16,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:21:16,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:21:16,475 INFO L87 Difference]: Start difference. First operand 1068 states and 1259 transitions. Second operand 3 states. [2020-12-09 05:21:16,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:21:16,674 INFO L93 Difference]: Finished difference Result 2346 states and 2757 transitions. [2020-12-09 05:21:16,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:21:16,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-09 05:21:16,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:21:16,675 INFO L225 Difference]: With dead ends: 2346 [2020-12-09 05:21:16,675 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:21:16,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:21:16,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:21:16,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:21:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:21:16,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:21:16,677 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2020-12-09 05:21:16,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:21:16,678 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:21:16,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:21:16,678 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:21:16,678 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:21:16,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-09 05:21:16,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:21:17,055 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 52 [2020-12-09 05:21:17,347 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 29 [2020-12-09 05:21:17,349 INFO L262 CegarLoopResult]: For program point L564(line 564) no Hoare annotation was computed. [2020-12-09 05:21:17,349 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 05:21:17,349 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 05:21:17,350 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 05:21:17,351 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 05:21:17,352 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 05:21:17,352 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:21:17,352 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 05:21:17,352 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 05:21:17,352 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 05:21:17,352 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1))) (let ((.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse1 (not .cse4)) (.cse5 (<= 15 ~a8~0)) (.cse6 (= ~a16~0 6)) (.cse2 (<= ~a8~0 13))) (or (and .cse0 .cse1) (and .cse0 .cse2) (and .cse3 (<= ~a7~0 0) .cse4 (= ~a17~0 1)) (and .cse3 .cse0) (and .cse3 .cse4 .cse5) (and .cse6 .cse1 .cse5) (and .cse6 .cse4 .cse2)))) [2020-12-09 05:21:17,352 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 05:21:17,352 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 05:21:17,353 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a20~0 1))) (let ((.cse0 (<= ~a16~0 5)) (.cse3 (= ~a21~0 1)) (.cse1 (not .cse4)) (.cse5 (<= 15 ~a8~0)) (.cse6 (= ~a16~0 6)) (.cse2 (<= ~a8~0 13))) (or (and .cse0 .cse1) (and .cse0 .cse2) (and .cse3 (<= ~a7~0 0) .cse4 (= ~a17~0 1)) (and .cse3 .cse0) (and .cse3 .cse4 .cse5) (and .cse6 .cse1 .cse5) (and .cse6 .cse4 .cse2)))) [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 564) no Hoare annotation was computed. [2020-12-09 05:21:17,354 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 05:21:17,355 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 05:21:17,355 INFO L262 CegarLoopResult]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 05:21:17,355 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 05:21:17,355 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 05:21:17,355 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 05:21:17,355 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 05:21:17,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:21:17 BoogieIcfgContainer [2020-12-09 05:21:17,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:21:17,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:21:17,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:21:17,371 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:21:17,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:21:10" (3/4) ... [2020-12-09 05:21:17,374 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:21:17,393 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-12-09 05:21:17,395 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 05:21:17,396 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 05:21:17,397 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 05:21:17,490 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_de43dcc7-16b8-432d-ad15-0af3073dfcaa/bin/utaipan/witness.graphml [2020-12-09 05:21:17,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:21:17,491 INFO L168 Benchmark]: Toolchain (without parser) took 8523.17 ms. Allocated memory was 79.7 MB in the beginning and 310.4 MB in the end (delta: 230.7 MB). Free memory was 46.0 MB in the beginning and 165.1 MB in the end (delta: -119.1 MB). Peak memory consumption was 110.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:21:17,491 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 79.7 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:21:17,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.80 ms. Allocated memory was 79.7 MB in the beginning and 111.1 MB in the end (delta: 31.5 MB). Free memory was 45.8 MB in the beginning and 72.0 MB in the end (delta: -26.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:21:17,491 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 111.1 MB. Free memory was 72.0 MB in the beginning and 66.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:21:17,492 INFO L168 Benchmark]: Boogie Preprocessor took 41.31 ms. Allocated memory is still 111.1 MB. Free memory was 66.3 MB in the beginning and 61.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:21:17,492 INFO L168 Benchmark]: RCFGBuilder took 1316.28 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 61.6 MB in the beginning and 84.0 MB in the end (delta: -22.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:21:17,492 INFO L168 Benchmark]: TraceAbstraction took 6618.07 ms. Allocated memory was 134.2 MB in the beginning and 310.4 MB in the end (delta: 176.2 MB). Free memory was 82.9 MB in the beginning and 180.8 MB in the end (delta: -97.9 MB). Peak memory consumption was 78.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:21:17,492 INFO L168 Benchmark]: Witness Printer took 119.54 ms. Allocated memory is still 310.4 MB. Free memory was 180.8 MB in the beginning and 165.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:21:17,494 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 79.7 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 370.80 ms. Allocated memory was 79.7 MB in the beginning and 111.1 MB in the end (delta: 31.5 MB). Free memory was 45.8 MB in the beginning and 72.0 MB in the end (delta: -26.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 111.1 MB. Free memory was 72.0 MB in the beginning and 66.3 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.31 ms. Allocated memory is still 111.1 MB. Free memory was 66.3 MB in the beginning and 61.6 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1316.28 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 61.6 MB in the beginning and 84.0 MB in the end (delta: -22.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6618.07 ms. Allocated memory was 134.2 MB in the beginning and 310.4 MB in the end (delta: 176.2 MB). Free memory was 82.9 MB in the beginning and 180.8 MB in the end (delta: -97.9 MB). Peak memory consumption was 78.3 MB. Max. memory is 16.1 GB. * Witness Printer took 119.54 ms. Allocated memory is still 310.4 MB. Free memory was 180.8 MB in the beginning and 165.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 564]: 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: 40]: Loop Invariant Derived loop invariant: ((((((a16 <= 5 && !(a20 == 1)) || (a16 <= 5 && a8 <= 13)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (a21 == 1 && a16 <= 5)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((a16 == 6 && a20 == 1) && a8 <= 13) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a16 <= 5 && !(a20 == 1)) || (a16 <= 5 && a8 <= 13)) || (((a21 == 1 && a7 <= 0) && a20 == 1) && a17 == 1)) || (a21 == 1 && a16 <= 5)) || ((a21 == 1 && a20 == 1) && 15 <= a8)) || ((a16 == 6 && !(a20 == 1)) && 15 <= a8)) || ((a16 == 6 && a20 == 1) && a8 <= 13) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 13, TraceHistogramMax: 8, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 648 SDtfs, 919 SDslu, 59 SDs, 0 SdLazy, 3055 SolverSat, 761 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 519 GetRequests, 497 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 1522 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 135 HoareAnnotationTreeSize, 3 FomulaSimplifications, 5126 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 366 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1874 NumberOfCodeBlocks, 1874 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2100 ConstructedInterpolants, 0 QuantifiedInterpolants, 1062622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 555 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 2218/2360 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...