./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label01.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_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI --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 052e3cb7fe168e14e27d9002bbcee163dc478f71 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:21,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:21,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:21,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:21,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:21,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:21,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:21,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:21,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:21,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:21,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:21,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:21,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:22,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:22,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:22,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:22,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:22,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:22,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:22,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:22,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:22,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:22,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:22,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:22,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:22,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:22,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:22,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:22,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:22,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:22,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:22,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:22,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:22,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:22,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:22,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:22,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:22,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:22,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:22,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:22,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:22,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:22,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:22,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:22,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:22,056 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:22,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:22,056 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:22,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:22,056 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:22,057 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:22,057 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:22,057 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:22,057 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:22,058 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:22,058 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:22,058 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:22,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:22,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:22,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:22,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:22,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:22,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:22,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:22,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:22,060 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:22,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:22,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:22,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:22,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:22,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:22,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:22,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:22,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:22,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:22,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:22,063 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:22,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:22,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:22,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:22,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:22,064 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_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 052e3cb7fe168e14e27d9002bbcee163dc478f71 [2021-10-11 02:20:22,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:22,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:22,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:22,351 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:22,352 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:22,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label01.c [2021-10-11 02:20:22,423 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/data/b63d88a7b/b787d616e4284ce489ebef2ab08910ff/FLAGd145dccde [2021-10-11 02:20:23,093 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:23,108 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/sv-benchmarks/c/eca-rers2012/Problem02_label01.c [2021-10-11 02:20:23,122 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/data/b63d88a7b/b787d616e4284ce489ebef2ab08910ff/FLAGd145dccde [2021-10-11 02:20:23,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/data/b63d88a7b/b787d616e4284ce489ebef2ab08910ff [2021-10-11 02:20:23,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:23,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:23,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:23,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:23,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:23,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:23" (1/1) ... [2021-10-11 02:20:23,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5255201b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:23, skipping insertion in model container [2021-10-11 02:20:23,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:23" (1/1) ... [2021-10-11 02:20:23,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:23,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:23,753 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/sv-benchmarks/c/eca-rers2012/Problem02_label01.c[18261,18274] [2021-10-11 02:20:23,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:23,805 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:23,951 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/sv-benchmarks/c/eca-rers2012/Problem02_label01.c[18261,18274] [2021-10-11 02:20:23,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:24,000 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:24,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24 WrapperNode [2021-10-11 02:20:24,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:24,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:24,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:24,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:24,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,116 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:24,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:24,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:24,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:24,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... [2021-10-11 02:20:24,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:24,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:24,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:24,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:24,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:20:24,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:24,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:24,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:24,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:26,675 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:26,676 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:20:26,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:26 BoogieIcfgContainer [2021-10-11 02:20:26,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:26,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:26,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:26,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:26,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:23" (1/3) ... [2021-10-11 02:20:26,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc29c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:26, skipping insertion in model container [2021-10-11 02:20:26,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:24" (2/3) ... [2021-10-11 02:20:26,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc29c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:26, skipping insertion in model container [2021-10-11 02:20:26,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:26" (3/3) ... [2021-10-11 02:20:26,693 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label01.c [2021-10-11 02:20:26,710 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:26,714 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:20:26,725 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:20:26,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:26,759 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:26,760 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:26,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:26,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:26,761 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:26,761 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:26,761 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:20:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:20:26,786 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:26,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:26,787 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:26,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:26,792 INFO L82 PathProgramCache]: Analyzing trace with hash 925956623, now seen corresponding path program 1 times [2021-10-11 02:20:26,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:26,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007257166] [2021-10-11 02:20:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:27,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007257166] [2021-10-11 02:20:27,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:27,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:27,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962140151] [2021-10-11 02:20:27,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:27,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:27,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:27,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:27,146 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:20:27,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:27,743 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:20:27,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:27,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:20:27,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:27,771 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:20:27,775 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:20:27,779 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 [2021-10-11 02:20:27,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:20:27,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:20:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:20:27,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 298 transitions. [2021-10-11 02:20:27,856 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 298 transitions. Word has length 80 [2021-10-11 02:20:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:27,857 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 298 transitions. [2021-10-11 02:20:27,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 298 transitions. [2021-10-11 02:20:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-10-11 02:20:27,863 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:27,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:27,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:27,864 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:27,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:27,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1028677380, now seen corresponding path program 1 times [2021-10-11 02:20:27,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:27,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313229768] [2021-10-11 02:20:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:27,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:27,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313229768] [2021-10-11 02:20:27,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:27,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:27,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023173066] [2021-10-11 02:20:28,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:28,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:28,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:28,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:28,003 INFO L87 Difference]: Start difference. First operand 163 states and 298 transitions. Second operand 3 states. [2021-10-11 02:20:28,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:28,506 INFO L93 Difference]: Finished difference Result 485 states and 891 transitions. [2021-10-11 02:20:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:28,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2021-10-11 02:20:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:28,512 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:20:28,513 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:20:28,515 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 [2021-10-11 02:20:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:20:28,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:20:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:20:28,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 483 transitions. [2021-10-11 02:20:28,547 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 483 transitions. Word has length 84 [2021-10-11 02:20:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:28,548 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 483 transitions. [2021-10-11 02:20:28,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 483 transitions. [2021-10-11 02:20:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-10-11 02:20:28,556 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:28,557 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:28,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:28,557 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:28,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:28,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2137927261, now seen corresponding path program 1 times [2021-10-11 02:20:28,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:28,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808983029] [2021-10-11 02:20:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:28,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808983029] [2021-10-11 02:20:28,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731345452] [2021-10-11 02:20:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:20:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:28,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:28,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:20:29,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:20:29,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:29,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2021-10-11 02:20:29,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224542143] [2021-10-11 02:20:29,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:29,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:29,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:29,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:29,188 INFO L87 Difference]: Start difference. First operand 323 states and 483 transitions. Second operand 3 states. [2021-10-11 02:20:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:29,676 INFO L93 Difference]: Finished difference Result 565 states and 875 transitions. [2021-10-11 02:20:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:29,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2021-10-11 02:20:29,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:29,682 INFO L225 Difference]: With dead ends: 565 [2021-10-11 02:20:29,683 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:20:29,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:20:29,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:20:29,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 403. [2021-10-11 02:20:29,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2021-10-11 02:20:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 638 transitions. [2021-10-11 02:20:29,708 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 638 transitions. Word has length 89 [2021-10-11 02:20:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:29,710 INFO L481 AbstractCegarLoop]: Abstraction has 403 states and 638 transitions. [2021-10-11 02:20:29,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 638 transitions. [2021-10-11 02:20:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:20:29,713 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:29,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:29,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:20:29,928 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:29,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2134426041, now seen corresponding path program 1 times [2021-10-11 02:20:29,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:29,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277816639] [2021-10-11 02:20:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:30,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277816639] [2021-10-11 02:20:30,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:30,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:30,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563369463] [2021-10-11 02:20:30,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:30,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:30,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:30,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:30,047 INFO L87 Difference]: Start difference. First operand 403 states and 638 transitions. Second operand 3 states. [2021-10-11 02:20:30,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:30,531 INFO L93 Difference]: Finished difference Result 1045 states and 1726 transitions. [2021-10-11 02:20:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:30,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:20:30,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:30,538 INFO L225 Difference]: With dead ends: 1045 [2021-10-11 02:20:30,539 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:20:30,543 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 [2021-10-11 02:20:30,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:20:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:20:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:20:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 1059 transitions. [2021-10-11 02:20:30,566 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 1059 transitions. Word has length 103 [2021-10-11 02:20:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:30,567 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 1059 transitions. [2021-10-11 02:20:30,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:30,567 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 1059 transitions. [2021-10-11 02:20:30,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:20:30,576 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:30,576 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:30,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:20:30,577 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash -2118168559, now seen corresponding path program 1 times [2021-10-11 02:20:30,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:30,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405389266] [2021-10-11 02:20:30,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:30,910 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:30,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405389266] [2021-10-11 02:20:30,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046217844] [2021-10-11 02:20:30,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:31,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:31,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:20:31,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:20:31,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:31,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:20:31,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516086041] [2021-10-11 02:20:31,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:31,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:31,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:31,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:31,285 INFO L87 Difference]: Start difference. First operand 643 states and 1059 transitions. Second operand 3 states. [2021-10-11 02:20:31,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:31,790 INFO L93 Difference]: Finished difference Result 1765 states and 2989 transitions. [2021-10-11 02:20:31,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:31,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:20:31,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:31,800 INFO L225 Difference]: With dead ends: 1765 [2021-10-11 02:20:31,800 INFO L226 Difference]: Without dead ends: 1123 [2021-10-11 02:20:31,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:31,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2021-10-11 02:20:31,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 963. [2021-10-11 02:20:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2021-10-11 02:20:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1579 transitions. [2021-10-11 02:20:31,829 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1579 transitions. Word has length 107 [2021-10-11 02:20:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:31,830 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1579 transitions. [2021-10-11 02:20:31,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1579 transitions. [2021-10-11 02:20:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:20:31,833 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:31,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:32,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:32,044 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:32,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:32,045 INFO L82 PathProgramCache]: Analyzing trace with hash -440297637, now seen corresponding path program 1 times [2021-10-11 02:20:32,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:32,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565598313] [2021-10-11 02:20:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:20:32,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565598313] [2021-10-11 02:20:32,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:32,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:32,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362313698] [2021-10-11 02:20:32,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:32,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:32,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:32,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:32,165 INFO L87 Difference]: Start difference. First operand 963 states and 1579 transitions. Second operand 3 states. [2021-10-11 02:20:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:32,695 INFO L93 Difference]: Finished difference Result 2405 states and 3958 transitions. [2021-10-11 02:20:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:32,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:20:32,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:32,705 INFO L225 Difference]: With dead ends: 2405 [2021-10-11 02:20:32,706 INFO L226 Difference]: Without dead ends: 1443 [2021-10-11 02:20:32,707 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 [2021-10-11 02:20:32,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2021-10-11 02:20:32,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2021-10-11 02:20:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1443 states. [2021-10-11 02:20:32,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2140 transitions. [2021-10-11 02:20:32,755 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2140 transitions. Word has length 111 [2021-10-11 02:20:32,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:32,756 INFO L481 AbstractCegarLoop]: Abstraction has 1443 states and 2140 transitions. [2021-10-11 02:20:32,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:32,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2140 transitions. [2021-10-11 02:20:32,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-10-11 02:20:32,760 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:32,760 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:32,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:20:32,760 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:32,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:32,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1534347196, now seen corresponding path program 1 times [2021-10-11 02:20:32,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:32,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75295459] [2021-10-11 02:20:32,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:20:32,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75295459] [2021-10-11 02:20:32,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:32,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:32,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527584946] [2021-10-11 02:20:32,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:32,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:32,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:32,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:32,828 INFO L87 Difference]: Start difference. First operand 1443 states and 2140 transitions. Second operand 3 states. [2021-10-11 02:20:33,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:33,344 INFO L93 Difference]: Finished difference Result 3445 states and 5129 transitions. [2021-10-11 02:20:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:33,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2021-10-11 02:20:33,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:33,354 INFO L225 Difference]: With dead ends: 3445 [2021-10-11 02:20:33,354 INFO L226 Difference]: Without dead ends: 1683 [2021-10-11 02:20:33,356 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 [2021-10-11 02:20:33,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-10-11 02:20:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1603. [2021-10-11 02:20:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1603 states. [2021-10-11 02:20:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 1988 transitions. [2021-10-11 02:20:33,395 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 1988 transitions. Word has length 133 [2021-10-11 02:20:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:33,396 INFO L481 AbstractCegarLoop]: Abstraction has 1603 states and 1988 transitions. [2021-10-11 02:20:33,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:33,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 1988 transitions. [2021-10-11 02:20:33,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-10-11 02:20:33,400 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:33,400 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:33,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:20:33,401 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:33,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2089853139, now seen corresponding path program 1 times [2021-10-11 02:20:33,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:33,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522525899] [2021-10-11 02:20:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-11 02:20:33,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522525899] [2021-10-11 02:20:33,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690496930] [2021-10-11 02:20:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:33,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:33,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-11 02:20:33,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:33,961 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-10-11 02:20:33,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:33,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:20:33,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697490365] [2021-10-11 02:20:33,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:33,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:33,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:33,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:33,964 INFO L87 Difference]: Start difference. First operand 1603 states and 1988 transitions. Second operand 3 states. [2021-10-11 02:20:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:34,347 INFO L93 Difference]: Finished difference Result 3685 states and 4656 transitions. [2021-10-11 02:20:34,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:34,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2021-10-11 02:20:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:34,359 INFO L225 Difference]: With dead ends: 3685 [2021-10-11 02:20:34,359 INFO L226 Difference]: Without dead ends: 2083 [2021-10-11 02:20:34,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 275 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:34,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2021-10-11 02:20:34,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 2003. [2021-10-11 02:20:34,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2003 states. [2021-10-11 02:20:34,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 2434 transitions. [2021-10-11 02:20:34,416 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 2434 transitions. Word has length 139 [2021-10-11 02:20:34,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:34,416 INFO L481 AbstractCegarLoop]: Abstraction has 2003 states and 2434 transitions. [2021-10-11 02:20:34,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:34,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 2434 transitions. [2021-10-11 02:20:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-11 02:20:34,421 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:34,421 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:34,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:34,640 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:34,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:34,641 INFO L82 PathProgramCache]: Analyzing trace with hash 867769731, now seen corresponding path program 1 times [2021-10-11 02:20:34,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:34,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987820474] [2021-10-11 02:20:34,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-10-11 02:20:34,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987820474] [2021-10-11 02:20:34,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101849647] [2021-10-11 02:20:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:34,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:20:34,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:20:35,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:20:35,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:20:35,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:20:35,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521712355] [2021-10-11 02:20:35,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:35,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:35,261 INFO L87 Difference]: Start difference. First operand 2003 states and 2434 transitions. Second operand 3 states. [2021-10-11 02:20:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:35,794 INFO L93 Difference]: Finished difference Result 4565 states and 5635 transitions. [2021-10-11 02:20:35,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:35,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2021-10-11 02:20:35,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:35,810 INFO L225 Difference]: With dead ends: 4565 [2021-10-11 02:20:35,811 INFO L226 Difference]: Without dead ends: 2563 [2021-10-11 02:20:35,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2563 states. [2021-10-11 02:20:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2563 to 2163. [2021-10-11 02:20:35,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2021-10-11 02:20:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 2627 transitions. [2021-10-11 02:20:35,875 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 2627 transitions. Word has length 154 [2021-10-11 02:20:35,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:35,876 INFO L481 AbstractCegarLoop]: Abstraction has 2163 states and 2627 transitions. [2021-10-11 02:20:35,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:35,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 2627 transitions. [2021-10-11 02:20:35,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-10-11 02:20:35,882 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:35,882 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:36,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:36,108 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:36,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1672963821, now seen corresponding path program 1 times [2021-10-11 02:20:36,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:36,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512202328] [2021-10-11 02:20:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:20:36,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512202328] [2021-10-11 02:20:36,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:36,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:36,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207583590] [2021-10-11 02:20:36,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:36,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:36,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:36,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:36,211 INFO L87 Difference]: Start difference. First operand 2163 states and 2627 transitions. Second operand 3 states. [2021-10-11 02:20:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:36,627 INFO L93 Difference]: Finished difference Result 5045 states and 6193 transitions. [2021-10-11 02:20:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:36,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2021-10-11 02:20:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:36,642 INFO L225 Difference]: With dead ends: 5045 [2021-10-11 02:20:36,643 INFO L226 Difference]: Without dead ends: 2883 [2021-10-11 02:20:36,646 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 [2021-10-11 02:20:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2021-10-11 02:20:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2483. [2021-10-11 02:20:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2483 states. [2021-10-11 02:20:36,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 2962 transitions. [2021-10-11 02:20:36,707 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 2962 transitions. Word has length 190 [2021-10-11 02:20:36,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:36,708 INFO L481 AbstractCegarLoop]: Abstraction has 2483 states and 2962 transitions. [2021-10-11 02:20:36,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:36,708 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 2962 transitions. [2021-10-11 02:20:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-10-11 02:20:36,716 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:36,716 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:36,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:20:36,716 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:36,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:36,717 INFO L82 PathProgramCache]: Analyzing trace with hash 854205448, now seen corresponding path program 1 times [2021-10-11 02:20:36,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:36,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925349143] [2021-10-11 02:20:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-10-11 02:20:36,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925349143] [2021-10-11 02:20:36,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:36,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:36,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982283559] [2021-10-11 02:20:36,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:36,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:36,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:36,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:36,837 INFO L87 Difference]: Start difference. First operand 2483 states and 2962 transitions. Second operand 3 states. [2021-10-11 02:20:37,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:37,043 INFO L93 Difference]: Finished difference Result 4243 states and 5019 transitions. [2021-10-11 02:20:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:37,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2021-10-11 02:20:37,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:37,044 INFO L225 Difference]: With dead ends: 4243 [2021-10-11 02:20:37,045 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:20:37,048 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 [2021-10-11 02:20:37,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:20:37,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:20:37,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:20:37,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:20:37,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 233 [2021-10-11 02:20:37,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:37,053 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:20:37,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:37,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:20:37,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:20:37,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:20:37,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:20:37,299 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-10-11 02:20:37,490 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-10-11 02:20:37,494 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:20:37,494 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:20:37,494 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:20:37,494 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:20:37,494 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:20:37,494 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:20:37,495 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:20:37,495 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:20:37,495 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:20:37,495 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:20:37,495 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:20:37,495 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:20:37,495 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:20:37,495 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:20:37,496 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:20:37,496 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:20:37,496 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:20:37,496 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:20:37,496 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:20:37,496 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:20:37,496 INFO L262 CegarLoopResult]: For program point L517-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:20:37,496 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:20:37,497 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:20:37,497 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:20:37,497 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:20:37,497 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:20:37,497 INFO L262 CegarLoopResult]: For program point L520-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:20:37,497 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:20:37,497 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:20:37,497 INFO L262 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2021-10-11 02:20:37,497 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:20:37,498 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:20:37,498 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:20:37,498 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:20:37,498 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:20:37,498 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:20:37,498 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:20:37,498 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:20:37,498 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:20:37,499 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 521) no Hoare annotation was computed. [2021-10-11 02:20:37,499 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:20:37,499 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:20:37,499 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:20:37,499 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:20:37,499 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:20:37,499 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:20:37,499 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:20:37,500 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:20:37,500 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:20:37,500 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:20:37,500 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:20:37,500 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:20:37,500 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:20:37,500 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:20:37,500 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:20:37,501 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:20:37,502 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse5 (= ~a11~0 0)) (.cse1 (<= ~a28~0 7)) (.cse3 (<= 10 ~a28~0)) (.cse0 (= ~a19~0 1)) (.cse6 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10))) (or (and (= ~a25~0 ~a11~0) .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse0 .cse5 .cse2) (and (or (and (<= ~a25~0 0) .cse4) (and .cse6 .cse1)) .cse2) (and (<= ~a19~0 0) .cse5 .cse1 .cse2) (and .cse0 .cse3 .cse2) (and .cse0 .cse6 .cse2) (and (<= 9 ~a28~0) .cse2 .cse4))) [2021-10-11 02:20:37,502 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:20:37,502 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:20:37,502 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:20:37,502 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:20:37,503 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:20:37,503 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:20:37,503 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:20:37,503 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:20:37,503 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:20:37,503 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:20:37,503 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:20:37,504 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse5 (= ~a11~0 0)) (.cse1 (<= ~a28~0 7)) (.cse3 (<= 10 ~a28~0)) (.cse0 (= ~a19~0 1)) (.cse6 (<= 8 ~a17~0)) (.cse2 (<= ~a17~0 8)) (.cse4 (<= ~a28~0 10))) (or (and (= ~a25~0 ~a11~0) .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4) (and .cse0 .cse5 .cse2) (and (or (and (<= ~a25~0 0) .cse4) (and .cse6 .cse1)) .cse2) (and (<= ~a19~0 0) .cse5 .cse1 .cse2) (and .cse0 .cse3 .cse2) (and .cse0 .cse6 .cse2) (and (<= 9 ~a28~0) .cse2 .cse4))) [2021-10-11 02:20:37,504 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:20:37,504 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:20:37,504 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:20:37,504 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:20:37,504 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:20:37,504 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:20:37,504 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:20:37,505 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:20:37,505 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:20:37,505 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:20:37,505 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:20:37,505 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:20:37,505 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:20:37,505 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:20:37,505 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:20:37,505 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:20:37,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:37 BoogieIcfgContainer [2021-10-11 02:20:37,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:37,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:37,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:37,540 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:37,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:26" (3/4) ... [2021-10-11 02:20:37,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:20:37,574 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 113 nodes and edges [2021-10-11 02:20:37,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:20:37,577 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:20:37,579 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:20:37,740 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2794fb6e-198c-4958-84b6-fd1fb91807fa/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:37,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:37,741 INFO L168 Benchmark]: Toolchain (without parser) took 14391.87 ms. Allocated memory was 117.4 MB in the beginning and 362.8 MB in the end (delta: 245.4 MB). Free memory was 96.1 MB in the beginning and 287.1 MB in the end (delta: -191.0 MB). Peak memory consumption was 54.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:37,741 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:37,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.18 ms. Allocated memory is still 117.4 MB. Free memory was 96.1 MB in the beginning and 69.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:37,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.84 ms. Allocated memory is still 117.4 MB. Free memory was 69.9 MB in the beginning and 64.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:37,743 INFO L168 Benchmark]: Boogie Preprocessor took 60.76 ms. Allocated memory is still 117.4 MB. Free memory was 64.5 MB in the beginning and 59.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:37,743 INFO L168 Benchmark]: RCFGBuilder took 2502.66 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 59.9 MB in the beginning and 128.1 MB in the end (delta: -68.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:37,744 INFO L168 Benchmark]: TraceAbstraction took 10854.58 ms. Allocated memory was 161.5 MB in the beginning and 362.8 MB in the end (delta: 201.3 MB). Free memory was 128.1 MB in the beginning and 302.8 MB in the end (delta: -174.7 MB). Peak memory consumption was 210.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:37,744 INFO L168 Benchmark]: Witness Printer took 199.96 ms. Allocated memory is still 362.8 MB. Free memory was 302.8 MB in the beginning and 287.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:37,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 88.1 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 651.18 ms. Allocated memory is still 117.4 MB. Free memory was 96.1 MB in the beginning and 69.9 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.84 ms. Allocated memory is still 117.4 MB. Free memory was 69.9 MB in the beginning and 64.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.76 ms. Allocated memory is still 117.4 MB. Free memory was 64.5 MB in the beginning and 59.9 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2502.66 ms. Allocated memory was 117.4 MB in the beginning and 161.5 MB in the end (delta: 44.0 MB). Free memory was 59.9 MB in the beginning and 128.1 MB in the end (delta: -68.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10854.58 ms. Allocated memory was 161.5 MB in the beginning and 362.8 MB in the end (delta: 201.3 MB). Free memory was 128.1 MB in the beginning and 302.8 MB in the end (delta: -174.7 MB). Peak memory consumption was 210.6 MB. Max. memory is 16.1 GB. * Witness Printer took 199.96 ms. Allocated memory is still 362.8 MB. Free memory was 302.8 MB in the beginning and 287.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 521]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 8) || ((a19 == 1 && 10 <= a28) && a28 <= 10)) || ((a19 == 1 && a11 == 0) && a17 <= 8)) || (((a25 <= 0 && a28 <= 10) || (8 <= a17 && a28 <= 7)) && a17 <= 8)) || (((a19 <= 0 && a11 == 0) && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && 10 <= a28) && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((9 <= a28 && a17 <= 8) && a28 <= 10) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((a25 == a11 && a19 == 1) && a28 <= 7) && a17 <= 8) || ((a19 == 1 && 10 <= a28) && a28 <= 10)) || ((a19 == 1 && a11 == 0) && a17 <= 8)) || (((a25 <= 0 && a28 <= 10) || (8 <= a17 && a28 <= 7)) && a17 <= 8)) || (((a19 <= 0 && a11 == 0) && a28 <= 7) && a17 <= 8)) || ((a19 == 1 && 10 <= a28) && a17 <= 8)) || ((a19 == 1 && 8 <= a17) && a17 <= 8)) || ((9 <= a28 && a17 <= 8) && a28 <= 10) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.2s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 642 SDtfs, 527 SDslu, 50 SDs, 0 SdLazy, 2471 SolverSat, 657 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1002 GetRequests, 976 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2483occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 1280 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 57 NumberOfFragments, 193 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1296 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 1912 NumberOfCodeBlocks, 1912 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2382 ConstructedInterpolants, 0 QuantifiedInterpolants, 927496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1255 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 1405/1440 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...