./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label54.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_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label54.c -s /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/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 82dff1713e271abdc8f24172a0abd315632e3f42 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 05:25:31,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:25:31,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:25:31,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:25:31,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:25:31,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:25:31,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:25:31,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:25:31,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:25:31,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:25:31,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:25:31,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:25:31,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:25:31,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:25:31,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:25:31,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:25:31,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:25:31,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:25:31,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:25:31,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:25:32,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:25:32,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:25:32,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:25:32,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:25:32,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:25:32,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:25:32,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:25:32,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:25:32,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:25:32,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:25:32,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:25:32,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:25:32,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:25:32,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:25:32,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:25:32,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:25:32,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:25:32,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:25:32,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:25:32,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:25:32,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:25:32,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:25:32,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:25:32,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:25:32,040 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:25:32,041 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:25:32,041 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:25:32,041 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:25:32,041 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:25:32,041 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:25:32,042 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:25:32,042 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:25:32,042 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:25:32,042 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:25:32,042 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:25:32,042 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:25:32,043 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:25:32,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:25:32,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:25:32,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:25:32,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:25:32,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:25:32,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:25:32,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:25:32,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:25:32,045 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:25:32,045 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:25:32,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:25:32,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:25:32,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:25:32,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:25:32,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:25:32,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:25:32,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:25:32,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:25:32,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:25:32,047 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:25:32,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:25:32,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:25:32,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:25:32,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:25:32,047 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_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82dff1713e271abdc8f24172a0abd315632e3f42 [2020-12-09 05:25:32,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:25:32,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:25:32,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:25:32,241 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:25:32,241 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:25:32,242 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label54.c [2020-12-09 05:25:32,281 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/data/ded74b647/3523311d4a1344458bcff97e6d4e1d31/FLAG2d1bc1da3 [2020-12-09 05:25:32,712 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:25:32,712 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/sv-benchmarks/c/eca-rers2012/Problem01_label54.c [2020-12-09 05:25:32,721 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/data/ded74b647/3523311d4a1344458bcff97e6d4e1d31/FLAG2d1bc1da3 [2020-12-09 05:25:32,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/data/ded74b647/3523311d4a1344458bcff97e6d4e1d31 [2020-12-09 05:25:32,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:25:32,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:25:32,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:25:32,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:25:32,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:25:32,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:25:32" (1/1) ... [2020-12-09 05:25:32,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@643d7cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:32, skipping insertion in model container [2020-12-09 05:25:32,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:25:32" (1/1) ... [2020-12-09 05:25:32,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:25:32,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:25:32,991 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_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/sv-benchmarks/c/eca-rers2012/Problem01_label54.c[20718,20731] [2020-12-09 05:25:33,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:25:33,010 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:25:33,075 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_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/sv-benchmarks/c/eca-rers2012/Problem01_label54.c[20718,20731] [2020-12-09 05:25:33,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:25:33,091 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:25:33,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33 WrapperNode [2020-12-09 05:25:33,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:25:33,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:25:33,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:25:33,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:25:33,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... [2020-12-09 05:25:33,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... [2020-12-09 05:25:33,153 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:25:33,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:25:33,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:25:33,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:25:33,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... [2020-12-09 05:25:33,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... [2020-12-09 05:25:33,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... [2020-12-09 05:25:33,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... [2020-12-09 05:25:33,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... [2020-12-09 05:25:33,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... [2020-12-09 05:25:33,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... [2020-12-09 05:25:33,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:25:33,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:25:33,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:25:33,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:25:33,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/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 05:25:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:25:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:25:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:25:33,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:25:34,519 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:25:34,519 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 05:25:34,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:34 BoogieIcfgContainer [2020-12-09 05:25:34,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:25:34,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:25:34,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:25:34,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:25:34,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:25:32" (1/3) ... [2020-12-09 05:25:34,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c95628a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:25:34, skipping insertion in model container [2020-12-09 05:25:34,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:25:33" (2/3) ... [2020-12-09 05:25:34,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c95628a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:25:34, skipping insertion in model container [2020-12-09 05:25:34,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:34" (3/3) ... [2020-12-09 05:25:34,529 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-12-09 05:25:34,538 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:25:34,541 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:25:34,548 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:25:34,565 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:25:34,565 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:25:34,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:25:34,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:25:34,565 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:25:34,565 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:25:34,566 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:25:34,566 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:25:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 05:25:34,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 05:25:34,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:34,582 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 05:25:34,582 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:34,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:34,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1806906456, now seen corresponding path program 1 times [2020-12-09 05:25:34,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:34,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078135280] [2020-12-09 05:25:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:34,835 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 05:25:34,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078135280] [2020-12-09 05:25:34,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:34,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:25:34,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905137834] [2020-12-09 05:25:34,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:34,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:34,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:34,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:25:34,856 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 05:25:35,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:35,183 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 05:25:35,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:35,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 05:25:35,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:35,196 INFO L225 Difference]: With dead ends: 224 [2020-12-09 05:25:35,197 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 05:25:35,199 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 05:25:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 05:25:35,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 05:25:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 05:25:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2020-12-09 05:25:35,243 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2020-12-09 05:25:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:35,243 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2020-12-09 05:25:35,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2020-12-09 05:25:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-09 05:25:35,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:35,246 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-12-09 05:25:35,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:25:35,247 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:35,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:35,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1996671328, now seen corresponding path program 1 times [2020-12-09 05:25:35,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:35,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276576392] [2020-12-09 05:25:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 05:25:35,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276576392] [2020-12-09 05:25:35,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:35,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:25:35,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352661135] [2020-12-09 05:25:35,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:35,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:35,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:35,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:25:35,333 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand 3 states. [2020-12-09 05:25:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:35,592 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2020-12-09 05:25:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:35,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-12-09 05:25:35,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:35,595 INFO L225 Difference]: With dead ends: 431 [2020-12-09 05:25:35,595 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 05:25:35,597 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 05:25:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 05:25:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 05:25:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 05:25:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2020-12-09 05:25:35,613 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2020-12-09 05:25:35,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:35,613 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2020-12-09 05:25:35,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:35,613 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2020-12-09 05:25:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-09 05:25:35,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:35,616 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:35,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:25:35,617 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:35,617 INFO L82 PathProgramCache]: Analyzing trace with hash 525300950, now seen corresponding path program 1 times [2020-12-09 05:25:35,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:35,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971468869] [2020-12-09 05:25:35,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:25:35,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971468869] [2020-12-09 05:25:35,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:35,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:25:35,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912397854] [2020-12-09 05:25:35,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:25:35,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:35,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:25:35,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:25:35,733 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2020-12-09 05:25:36,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:36,083 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2020-12-09 05:25:36,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:25:36,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-12-09 05:25:36,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:36,086 INFO L225 Difference]: With dead ends: 715 [2020-12-09 05:25:36,087 INFO L226 Difference]: Without dead ends: 429 [2020-12-09 05:25:36,088 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 05:25:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-12-09 05:25:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2020-12-09 05:25:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-09 05:25:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2020-12-09 05:25:36,110 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2020-12-09 05:25:36,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:36,110 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2020-12-09 05:25:36,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:25:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2020-12-09 05:25:36,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-09 05:25:36,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:36,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:36,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:25:36,115 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:36,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:36,115 INFO L82 PathProgramCache]: Analyzing trace with hash -863060192, now seen corresponding path program 1 times [2020-12-09 05:25:36,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:36,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724724629] [2020-12-09 05:25:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-09 05:25:36,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724724629] [2020-12-09 05:25:36,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:36,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:25:36,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356048471] [2020-12-09 05:25:36,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:36,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:36,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:36,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:25:36,164 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2020-12-09 05:25:36,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:36,414 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2020-12-09 05:25:36,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:36,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-12-09 05:25:36,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:36,418 INFO L225 Difference]: With dead ends: 999 [2020-12-09 05:25:36,419 INFO L226 Difference]: Without dead ends: 571 [2020-12-09 05:25:36,420 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 05:25:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-09 05:25:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2020-12-09 05:25:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-12-09 05:25:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2020-12-09 05:25:36,432 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2020-12-09 05:25:36,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:36,433 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2020-12-09 05:25:36,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2020-12-09 05:25:36,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-09 05:25:36,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:36,435 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:36,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:25:36,435 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:36,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1821422296, now seen corresponding path program 1 times [2020-12-09 05:25:36,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:36,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201968472] [2020-12-09 05:25:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-12-09 05:25:36,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201968472] [2020-12-09 05:25:36,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:36,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:25:36,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628591136] [2020-12-09 05:25:36,501 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:25:36,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:36,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:25:36,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:25:36,502 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 4 states. [2020-12-09 05:25:36,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:36,835 INFO L93 Difference]: Finished difference Result 1354 states and 1955 transitions. [2020-12-09 05:25:36,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:25:36,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-12-09 05:25:36,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:36,840 INFO L225 Difference]: With dead ends: 1354 [2020-12-09 05:25:36,840 INFO L226 Difference]: Without dead ends: 784 [2020-12-09 05:25:36,841 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 05:25:36,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2020-12-09 05:25:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2020-12-09 05:25:36,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2020-12-09 05:25:36,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 998 transitions. [2020-12-09 05:25:36,863 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 998 transitions. Word has length 113 [2020-12-09 05:25:36,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:36,864 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 998 transitions. [2020-12-09 05:25:36,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:25:36,864 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 998 transitions. [2020-12-09 05:25:36,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-12-09 05:25:36,866 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:36,867 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:36,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:25:36,867 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:36,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:36,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1123296268, now seen corresponding path program 1 times [2020-12-09 05:25:36,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:36,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62850547] [2020-12-09 05:25:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-12-09 05:25:36,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62850547] [2020-12-09 05:25:36,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:36,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:25:36,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156774922] [2020-12-09 05:25:36,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:36,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:36,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:36,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:25:36,922 INFO L87 Difference]: Start difference. First operand 784 states and 998 transitions. Second operand 3 states. [2020-12-09 05:25:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:37,156 INFO L93 Difference]: Finished difference Result 1851 states and 2333 transitions. [2020-12-09 05:25:37,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:37,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-12-09 05:25:37,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:37,162 INFO L225 Difference]: With dead ends: 1851 [2020-12-09 05:25:37,162 INFO L226 Difference]: Without dead ends: 1068 [2020-12-09 05:25:37,163 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 05:25:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2020-12-09 05:25:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2020-12-09 05:25:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-12-09 05:25:37,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1175 transitions. [2020-12-09 05:25:37,191 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1175 transitions. Word has length 122 [2020-12-09 05:25:37,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:37,191 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1175 transitions. [2020-12-09 05:25:37,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1175 transitions. [2020-12-09 05:25:37,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-09 05:25:37,194 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:37,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:37,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:25:37,194 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:37,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1134311930, now seen corresponding path program 1 times [2020-12-09 05:25:37,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:37,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509248153] [2020-12-09 05:25:37,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-12-09 05:25:37,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509248153] [2020-12-09 05:25:37,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:37,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:25:37,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463470765] [2020-12-09 05:25:37,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:37,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:37,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:37,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:25:37,264 INFO L87 Difference]: Start difference. First operand 926 states and 1175 transitions. Second operand 3 states. [2020-12-09 05:25:37,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:37,490 INFO L93 Difference]: Finished difference Result 1851 states and 2349 transitions. [2020-12-09 05:25:37,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:37,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-09 05:25:37,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:37,496 INFO L225 Difference]: With dead ends: 1851 [2020-12-09 05:25:37,496 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 05:25:37,497 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 05:25:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 05:25:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2020-12-09 05:25:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-12-09 05:25:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1161 transitions. [2020-12-09 05:25:37,518 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1161 transitions. Word has length 138 [2020-12-09 05:25:37,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:37,518 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1161 transitions. [2020-12-09 05:25:37,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1161 transitions. [2020-12-09 05:25:37,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-12-09 05:25:37,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:37,540 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 05:25:37,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:25:37,540 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:37,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:37,541 INFO L82 PathProgramCache]: Analyzing trace with hash 2113823908, now seen corresponding path program 1 times [2020-12-09 05:25:37,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:37,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217677858] [2020-12-09 05:25:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-09 05:25:37,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217677858] [2020-12-09 05:25:37,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:37,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:25:37,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093524976] [2020-12-09 05:25:37,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:25:37,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:37,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:25:37,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:25:37,628 INFO L87 Difference]: Start difference. First operand 926 states and 1161 transitions. Second operand 4 states. [2020-12-09 05:25:37,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:37,887 INFO L93 Difference]: Finished difference Result 1922 states and 2403 transitions. [2020-12-09 05:25:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:25:37,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-12-09 05:25:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:37,892 INFO L225 Difference]: With dead ends: 1922 [2020-12-09 05:25:37,892 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 05:25:37,894 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 05:25:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 05:25:37,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2020-12-09 05:25:37,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 05:25:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2020-12-09 05:25:37,915 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2020-12-09 05:25:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:37,915 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2020-12-09 05:25:37,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:25:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2020-12-09 05:25:37,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-12-09 05:25:37,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:37,919 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:37,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:25:37,919 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:37,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1461365399, now seen corresponding path program 1 times [2020-12-09 05:25:37,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:37,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389432932] [2020-12-09 05:25:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:38,005 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-12-09 05:25:38,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389432932] [2020-12-09 05:25:38,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:38,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:25:38,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225257440] [2020-12-09 05:25:38,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:38,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:38,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:38,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:25:38,007 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2020-12-09 05:25:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:38,235 INFO L93 Difference]: Finished difference Result 2277 states and 2824 transitions. [2020-12-09 05:25:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:38,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-12-09 05:25:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:38,240 INFO L225 Difference]: With dead ends: 2277 [2020-12-09 05:25:38,240 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 05:25:38,241 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 05:25:38,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 05:25:38,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2020-12-09 05:25:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 05:25:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1415 transitions. [2020-12-09 05:25:38,258 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1415 transitions. Word has length 171 [2020-12-09 05:25:38,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:38,259 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1415 transitions. [2020-12-09 05:25:38,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:38,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1415 transitions. [2020-12-09 05:25:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-09 05:25:38,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:38,261 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 05:25:38,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:25:38,261 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:38,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:38,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1229743210, now seen corresponding path program 1 times [2020-12-09 05:25:38,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:38,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191823479] [2020-12-09 05:25:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:38,556 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 05:25:38,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191823479] [2020-12-09 05:25:38,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46281687] [2020-12-09 05:25:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/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 05:25:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:38,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 05:25:38,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:25:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-09 05:25:38,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:25:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-12-09 05:25:38,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:25:38,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 05:25:38,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711701344] [2020-12-09 05:25:38,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:38,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:38,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:38,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:25:38,941 INFO L87 Difference]: Start difference. First operand 1139 states and 1415 transitions. Second operand 3 states. [2020-12-09 05:25:39,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:39,131 INFO L93 Difference]: Finished difference Result 2277 states and 2829 transitions. [2020-12-09 05:25:39,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:39,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-12-09 05:25:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:39,136 INFO L225 Difference]: With dead ends: 2277 [2020-12-09 05:25:39,136 INFO L226 Difference]: Without dead ends: 1139 [2020-12-09 05:25:39,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:25:39,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-12-09 05:25:39,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2020-12-09 05:25:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2020-12-09 05:25:39,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1184 transitions. [2020-12-09 05:25:39,160 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1184 transitions. Word has length 175 [2020-12-09 05:25:39,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:39,160 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1184 transitions. [2020-12-09 05:25:39,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1184 transitions. [2020-12-09 05:25:39,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-12-09 05:25:39,164 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:39,165 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:39,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 05:25:39,366 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:39,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1682002184, now seen corresponding path program 1 times [2020-12-09 05:25:39,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:39,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931514285] [2020-12-09 05:25:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-12-09 05:25:39,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931514285] [2020-12-09 05:25:39,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:39,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 05:25:39,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395126986] [2020-12-09 05:25:39,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:25:39,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:39,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:25:39,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:25:39,644 INFO L87 Difference]: Start difference. First operand 997 states and 1184 transitions. Second operand 5 states. [2020-12-09 05:25:39,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:39,928 INFO L93 Difference]: Finished difference Result 2238 states and 2639 transitions. [2020-12-09 05:25:39,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:25:39,928 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-12-09 05:25:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:39,932 INFO L225 Difference]: With dead ends: 2238 [2020-12-09 05:25:39,933 INFO L226 Difference]: Without dead ends: 1242 [2020-12-09 05:25:39,934 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 05:25:39,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2020-12-09 05:25:39,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1139. [2020-12-09 05:25:39,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 05:25:39,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1334 transitions. [2020-12-09 05:25:39,961 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1334 transitions. Word has length 220 [2020-12-09 05:25:39,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:39,961 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1334 transitions. [2020-12-09 05:25:39,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:25:39,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1334 transitions. [2020-12-09 05:25:39,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-12-09 05:25:39,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:39,964 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:39,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 05:25:39,964 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:39,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:39,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1742520921, now seen corresponding path program 1 times [2020-12-09 05:25:39,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:39,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537834612] [2020-12-09 05:25:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-12-09 05:25:40,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537834612] [2020-12-09 05:25:40,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:40,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:25:40,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116295832] [2020-12-09 05:25:40,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:40,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:40,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:40,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:25:40,044 INFO L87 Difference]: Start difference. First operand 1139 states and 1334 transitions. Second operand 3 states. [2020-12-09 05:25:40,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:40,232 INFO L93 Difference]: Finished difference Result 2277 states and 2667 transitions. [2020-12-09 05:25:40,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:40,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2020-12-09 05:25:40,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:40,236 INFO L225 Difference]: With dead ends: 2277 [2020-12-09 05:25:40,236 INFO L226 Difference]: Without dead ends: 1139 [2020-12-09 05:25:40,237 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 05:25:40,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-12-09 05:25:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2020-12-09 05:25:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 05:25:40,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1303 transitions. [2020-12-09 05:25:40,253 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1303 transitions. Word has length 233 [2020-12-09 05:25:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:40,253 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1303 transitions. [2020-12-09 05:25:40,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:40,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1303 transitions. [2020-12-09 05:25:40,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-12-09 05:25:40,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:25:40,255 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:25:40,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 05:25:40,255 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:25:40,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:25:40,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1337017151, now seen corresponding path program 1 times [2020-12-09 05:25:40,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:25:40,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544159151] [2020-12-09 05:25:40,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:25:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:25:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2020-12-09 05:25:40,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544159151] [2020-12-09 05:25:40,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:25:40,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:25:40,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171521595] [2020-12-09 05:25:40,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 05:25:40,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:25:40,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 05:25:40,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 05:25:40,377 INFO L87 Difference]: Start difference. First operand 1139 states and 1303 transitions. Second operand 3 states. [2020-12-09 05:25:40,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:25:40,585 INFO L93 Difference]: Finished difference Result 2488 states and 2834 transitions. [2020-12-09 05:25:40,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 05:25:40,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2020-12-09 05:25:40,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:25:40,585 INFO L225 Difference]: With dead ends: 2488 [2020-12-09 05:25:40,585 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:25:40,587 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 05:25:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:25:40,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:25:40,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:25:40,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:25:40,587 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2020-12-09 05:25:40,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:25:40,588 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:25:40,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 05:25:40,588 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:25:40,588 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:25:40,588 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 05:25:40,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:25:40,939 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2020-12-09 05:25:41,156 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 05:25:41,158 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 05:25:41,159 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse7 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (= ~a21~0 1)) (.cse10 (<= ~a16~0 4)) (.cse4 (= ~a17~0 1)) (.cse9 (<= ~a8~0 13)) (.cse3 (<= 15 ~a8~0)) (.cse0 (<= ~a16~0 5)) (.cse8 (<= ~a17~0 0)) (.cse2 (not .cse6))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse1 .cse4) (and .cse7 .cse8 .cse6 .cse9) (and .cse7 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse8 .cse6) (and .cse10 .cse8 .cse9) (and .cse5 .cse10 .cse6 .cse4) (and .cse0 .cse4 .cse9) (and .cse8 .cse2 .cse3) (and .cse0 .cse8 .cse2)))) [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L552(line 552) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 05:25:41,160 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 05:25:41,161 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 05:25:41,162 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse7 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (= ~a21~0 1)) (.cse10 (<= ~a16~0 4)) (.cse4 (= ~a17~0 1)) (.cse9 (<= ~a8~0 13)) (.cse3 (<= 15 ~a8~0)) (.cse0 (<= ~a16~0 5)) (.cse8 (<= ~a17~0 0)) (.cse2 (not .cse6))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse1 .cse4) (and .cse7 .cse8 .cse6 .cse9) (and .cse7 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse8 .cse6) (and .cse10 .cse8 .cse9) (and .cse5 .cse10 .cse6 .cse4) (and .cse0 .cse4 .cse9) (and .cse8 .cse2 .cse3) (and .cse0 .cse8 .cse2)))) [2020-12-09 05:25:41,162 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 05:25:41,162 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 552) no Hoare annotation was computed. [2020-12-09 05:25:41,162 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 05:25:41,162 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 05:25:41,162 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 05:25:41,162 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 05:25:41,162 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 05:25:41,162 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 05:25:41,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:25:41 BoogieIcfgContainer [2020-12-09 05:25:41,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:25:41,178 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:25:41,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:25:41,178 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:25:41,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:25:34" (3/4) ... [2020-12-09 05:25:41,180 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:25:41,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2020-12-09 05:25:41,197 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 05:25:41,198 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 05:25:41,199 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 05:25:41,274 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_19d5ddda-0fb5-4f54-bb68-ed95eb22b2c5/bin/utaipan/witness.graphml [2020-12-09 05:25:41,274 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:25:41,275 INFO L168 Benchmark]: Toolchain (without parser) took 8541.13 ms. Allocated memory was 121.6 MB in the beginning and 364.9 MB in the end (delta: 243.3 MB). Free memory was 82.8 MB in the beginning and 166.5 MB in the end (delta: -83.7 MB). Peak memory consumption was 159.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:41,275 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 121.6 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:25:41,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.57 ms. Allocated memory is still 121.6 MB. Free memory was 82.6 MB in the beginning and 81.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:41,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.24 ms. Allocated memory is still 121.6 MB. Free memory was 81.3 MB in the beginning and 75.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:41,276 INFO L168 Benchmark]: Boogie Preprocessor took 43.50 ms. Allocated memory is still 121.6 MB. Free memory was 75.5 MB in the beginning and 71.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:41,276 INFO L168 Benchmark]: RCFGBuilder took 1324.22 ms. Allocated memory was 121.6 MB in the beginning and 155.2 MB in the end (delta: 33.6 MB). Free memory was 71.3 MB in the beginning and 112.4 MB in the end (delta: -41.1 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:41,276 INFO L168 Benchmark]: TraceAbstraction took 6653.95 ms. Allocated memory was 155.2 MB in the beginning and 364.9 MB in the end (delta: 209.7 MB). Free memory was 111.4 MB in the beginning and 182.2 MB in the end (delta: -70.8 MB). Peak memory consumption was 138.9 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:41,277 INFO L168 Benchmark]: Witness Printer took 96.66 ms. Allocated memory is still 364.9 MB. Free memory was 182.2 MB in the beginning and 166.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 05:25:41,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 121.6 MB. Free memory is still 101.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.57 ms. Allocated memory is still 121.6 MB. Free memory was 82.6 MB in the beginning and 81.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.24 ms. Allocated memory is still 121.6 MB. Free memory was 81.3 MB in the beginning and 75.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.50 ms. Allocated memory is still 121.6 MB. Free memory was 75.5 MB in the beginning and 71.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1324.22 ms. Allocated memory was 121.6 MB in the beginning and 155.2 MB in the end (delta: 33.6 MB). Free memory was 71.3 MB in the beginning and 112.4 MB in the end (delta: -41.1 MB). Peak memory consumption was 54.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6653.95 ms. Allocated memory was 155.2 MB in the beginning and 364.9 MB in the end (delta: 209.7 MB). Free memory was 111.4 MB in the beginning and 182.2 MB in the end (delta: -70.8 MB). Peak memory consumption was 138.9 MB. Max. memory is 16.1 GB. * Witness Printer took 96.66 ms. Allocated memory is still 364.9 MB. Free memory was 182.2 MB in the beginning and 166.5 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: 552]: 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 && !(a7 == 1)) && !(a20 == 1)) && 15 <= a8) && a17 == 1) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || ((((a16 == 6 && !(a7 == 1)) && !(a20 == 1)) && 15 <= a8) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 4 && a17 <= 0) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((((a16 <= 5 && !(a7 == 1)) && !(a20 == 1)) && 15 <= a8) && a17 == 1) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || ((((a16 == 6 && !(a7 == 1)) && !(a20 == 1)) && 15 <= a8) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 4 && a17 <= 0) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1)) - 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: 7, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 692 SDtfs, 916 SDslu, 61 SDs, 0 SdLazy, 3116 SolverSat, 749 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 387 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 671 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 259 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2928 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 760 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 2103 NumberOfCodeBlocks, 2103 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2263 ConstructedInterpolants, 0 QuantifiedInterpolants, 1353491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 2117/2209 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...