./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label22.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label22.c -s /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ab22c0365eb274fbdef281fcc68fa9748749388c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:04:04,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:04:04,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:04:04,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:04:04,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:04:04,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:04:04,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:04:04,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:04:04,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:04:04,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:04:04,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:04:04,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:04:04,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:04:04,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:04:04,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:04:04,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:04:04,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:04:04,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:04:04,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:04:04,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:04:04,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:04:04,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:04:04,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:04:04,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:04:04,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:04:04,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:04:04,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:04:04,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:04:04,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:04:04,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:04:04,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:04:04,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:04:04,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:04:04,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:04:04,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:04:04,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:04:04,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:04:04,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:04:04,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:04:04,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:04:04,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:04:04,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:04:04,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:04:04,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:04:04,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:04:04,981 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:04:04,981 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:04:04,981 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:04:04,981 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:04:04,981 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:04:04,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:04:04,982 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:04:04,982 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:04:04,982 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:04:04,982 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:04:04,982 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:04:04,982 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:04:04,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:04:04,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:04:04,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:04:04,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:04:04,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:04:04,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:04:04,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:04:04,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:04:04,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:04:04,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:04:04,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:04:04,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:04:04,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:04:04,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:04:04,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:04:04,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:04:04,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:04:04,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:04:04,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:04:04,985 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:04:04,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:04:04,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:04:04,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:04:04,986 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:04:04,986 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab22c0365eb274fbdef281fcc68fa9748749388c [2020-12-09 07:04:05,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:04:05,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:04:05,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:04:05,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:04:05,194 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:04:05,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem03_label22.c [2020-12-09 07:04:05,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/data/c0a6698f6/557e365d1b0a454992dbd42c1b06356f/FLAG0dc9e57a0 [2020-12-09 07:04:05,729 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:04:05,729 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/sv-benchmarks/c/eca-rers2012/Problem03_label22.c [2020-12-09 07:04:05,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/data/c0a6698f6/557e365d1b0a454992dbd42c1b06356f/FLAG0dc9e57a0 [2020-12-09 07:04:06,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/data/c0a6698f6/557e365d1b0a454992dbd42c1b06356f [2020-12-09 07:04:06,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:04:06,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:04:06,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:04:06,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:04:06,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:04:06,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f086fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06, skipping insertion in model container [2020-12-09 07:04:06,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:04:06,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:04:06,619 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/sv-benchmarks/c/eca-rers2012/Problem03_label22.c[56764,56777] [2020-12-09 07:04:06,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:04:06,649 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:04:06,785 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/sv-benchmarks/c/eca-rers2012/Problem03_label22.c[56764,56777] [2020-12-09 07:04:06,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:04:06,808 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:04:06,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06 WrapperNode [2020-12-09 07:04:06,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:04:06,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:04:06,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:04:06,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:04:06,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:04:06,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:04:06,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:04:06,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:04:06,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... [2020-12-09 07:04:06,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:04:06,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:04:06,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:04:06,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:04:06,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:04:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:04:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:04:07,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:04:07,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:04:09,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:04:09,273 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 07:04:09,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:04:09 BoogieIcfgContainer [2020-12-09 07:04:09,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:04:09,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:04:09,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:04:09,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:04:09,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:04:06" (1/3) ... [2020-12-09 07:04:09,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d87cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:04:09, skipping insertion in model container [2020-12-09 07:04:09,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:04:06" (2/3) ... [2020-12-09 07:04:09,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37d87cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:04:09, skipping insertion in model container [2020-12-09 07:04:09,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:04:09" (3/3) ... [2020-12-09 07:04:09,284 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label22.c [2020-12-09 07:04:09,298 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:04:09,301 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 07:04:09,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 07:04:09,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:04:09,337 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:04:09,338 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:04:09,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:04:09,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:04:09,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:04:09,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:04:09,338 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:04:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-12-09 07:04:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-09 07:04:09,367 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:09,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:09,369 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:09,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:09,374 INFO L82 PathProgramCache]: Analyzing trace with hash 466750743, now seen corresponding path program 1 times [2020-12-09 07:04:09,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:09,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986977266] [2020-12-09 07:04:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:09,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:09,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986977266] [2020-12-09 07:04:09,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:09,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:09,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551245492] [2020-12-09 07:04:09,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:09,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:09,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:09,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:09,784 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-12-09 07:04:10,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:10,432 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2020-12-09 07:04:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:10,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-09 07:04:10,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:10,445 INFO L225 Difference]: With dead ends: 440 [2020-12-09 07:04:10,445 INFO L226 Difference]: Without dead ends: 289 [2020-12-09 07:04:10,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:10,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-09 07:04:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-12-09 07:04:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-12-09 07:04:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 515 transitions. [2020-12-09 07:04:10,496 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 515 transitions. Word has length 143 [2020-12-09 07:04:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:10,497 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 515 transitions. [2020-12-09 07:04:10,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:10,497 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 515 transitions. [2020-12-09 07:04:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-09 07:04:10,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:10,502 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:10,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:04:10,502 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:10,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:10,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1593794230, now seen corresponding path program 1 times [2020-12-09 07:04:10,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:10,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161793535] [2020-12-09 07:04:10,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:10,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:10,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161793535] [2020-12-09 07:04:10,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:10,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:10,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167079343] [2020-12-09 07:04:10,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:10,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:10,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:10,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:10,589 INFO L87 Difference]: Start difference. First operand 289 states and 515 transitions. Second operand 3 states. [2020-12-09 07:04:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:11,197 INFO L93 Difference]: Finished difference Result 863 states and 1542 transitions. [2020-12-09 07:04:11,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:11,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-12-09 07:04:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:11,208 INFO L225 Difference]: With dead ends: 863 [2020-12-09 07:04:11,208 INFO L226 Difference]: Without dead ends: 575 [2020-12-09 07:04:11,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:11,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-12-09 07:04:11,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2020-12-09 07:04:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-12-09 07:04:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 999 transitions. [2020-12-09 07:04:11,234 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 999 transitions. Word has length 151 [2020-12-09 07:04:11,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:11,234 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 999 transitions. [2020-12-09 07:04:11,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 999 transitions. [2020-12-09 07:04:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-09 07:04:11,240 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:11,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:11,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:04:11,241 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:11,241 INFO L82 PathProgramCache]: Analyzing trace with hash 309753821, now seen corresponding path program 1 times [2020-12-09 07:04:11,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:11,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662553782] [2020-12-09 07:04:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:11,354 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 07:04:11,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662553782] [2020-12-09 07:04:11,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:11,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:04:11,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618228013] [2020-12-09 07:04:11,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:11,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:11,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:11,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:11,356 INFO L87 Difference]: Start difference. First operand 575 states and 999 transitions. Second operand 3 states. [2020-12-09 07:04:11,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:11,980 INFO L93 Difference]: Finished difference Result 1721 states and 2994 transitions. [2020-12-09 07:04:11,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:11,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-09 07:04:11,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:11,986 INFO L225 Difference]: With dead ends: 1721 [2020-12-09 07:04:11,986 INFO L226 Difference]: Without dead ends: 1147 [2020-12-09 07:04:11,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-12-09 07:04:12,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2020-12-09 07:04:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-12-09 07:04:12,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1816 transitions. [2020-12-09 07:04:12,015 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1816 transitions. Word has length 163 [2020-12-09 07:04:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:12,015 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 1816 transitions. [2020-12-09 07:04:12,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:12,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1816 transitions. [2020-12-09 07:04:12,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-09 07:04:12,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:12,018 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:12,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:04:12,019 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:12,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:12,019 INFO L82 PathProgramCache]: Analyzing trace with hash -160346438, now seen corresponding path program 1 times [2020-12-09 07:04:12,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:12,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139505153] [2020-12-09 07:04:12,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 07:04:12,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139505153] [2020-12-09 07:04:12,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:12,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:04:12,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116845744] [2020-12-09 07:04:12,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:12,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:12,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:12,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:12,100 INFO L87 Difference]: Start difference. First operand 1147 states and 1816 transitions. Second operand 3 states. [2020-12-09 07:04:12,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:12,823 INFO L93 Difference]: Finished difference Result 3437 states and 5445 transitions. [2020-12-09 07:04:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:12,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-12-09 07:04:12,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:12,832 INFO L225 Difference]: With dead ends: 3437 [2020-12-09 07:04:12,832 INFO L226 Difference]: Without dead ends: 2291 [2020-12-09 07:04:12,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:12,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2020-12-09 07:04:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2020-12-09 07:04:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2291 states. [2020-12-09 07:04:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3326 transitions. [2020-12-09 07:04:12,878 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3326 transitions. Word has length 169 [2020-12-09 07:04:12,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:12,878 INFO L481 AbstractCegarLoop]: Abstraction has 2291 states and 3326 transitions. [2020-12-09 07:04:12,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:12,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3326 transitions. [2020-12-09 07:04:12,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-12-09 07:04:12,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:12,883 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:12,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:04:12,883 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:12,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:12,883 INFO L82 PathProgramCache]: Analyzing trace with hash -205897246, now seen corresponding path program 1 times [2020-12-09 07:04:12,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:12,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097438899] [2020-12-09 07:04:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:12,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097438899] [2020-12-09 07:04:12,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:12,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:12,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666713555] [2020-12-09 07:04:12,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:12,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:12,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:12,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:12,946 INFO L87 Difference]: Start difference. First operand 2291 states and 3326 transitions. Second operand 3 states. [2020-12-09 07:04:13,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:13,574 INFO L93 Difference]: Finished difference Result 6154 states and 9069 transitions. [2020-12-09 07:04:13,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:13,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2020-12-09 07:04:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:13,588 INFO L225 Difference]: With dead ends: 6154 [2020-12-09 07:04:13,588 INFO L226 Difference]: Without dead ends: 3864 [2020-12-09 07:04:13,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:13,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2020-12-09 07:04:13,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3864. [2020-12-09 07:04:13,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3864 states. [2020-12-09 07:04:13,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 5640 transitions. [2020-12-09 07:04:13,654 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 5640 transitions. Word has length 169 [2020-12-09 07:04:13,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:13,654 INFO L481 AbstractCegarLoop]: Abstraction has 3864 states and 5640 transitions. [2020-12-09 07:04:13,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 5640 transitions. [2020-12-09 07:04:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-12-09 07:04:13,660 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:13,661 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:13,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 07:04:13,661 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:13,661 INFO L82 PathProgramCache]: Analyzing trace with hash -270731081, now seen corresponding path program 1 times [2020-12-09 07:04:13,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:13,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159584438] [2020-12-09 07:04:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:13,747 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:13,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159584438] [2020-12-09 07:04:13,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:13,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:04:13,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167289509] [2020-12-09 07:04:13,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:04:13,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:13,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:04:13,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:04:13,749 INFO L87 Difference]: Start difference. First operand 3864 states and 5640 transitions. Second operand 4 states. [2020-12-09 07:04:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:14,546 INFO L93 Difference]: Finished difference Result 12877 states and 19059 transitions. [2020-12-09 07:04:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:04:14,547 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 180 [2020-12-09 07:04:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:14,579 INFO L225 Difference]: With dead ends: 12877 [2020-12-09 07:04:14,579 INFO L226 Difference]: Without dead ends: 9014 [2020-12-09 07:04:14,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:04:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9014 states. [2020-12-09 07:04:14,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9014 to 9012. [2020-12-09 07:04:14,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9012 states. [2020-12-09 07:04:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9012 states to 9012 states and 13314 transitions. [2020-12-09 07:04:14,715 INFO L78 Accepts]: Start accepts. Automaton has 9012 states and 13314 transitions. Word has length 180 [2020-12-09 07:04:14,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:14,715 INFO L481 AbstractCegarLoop]: Abstraction has 9012 states and 13314 transitions. [2020-12-09 07:04:14,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:04:14,716 INFO L276 IsEmpty]: Start isEmpty. Operand 9012 states and 13314 transitions. [2020-12-09 07:04:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-12-09 07:04:14,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:14,728 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:14,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 07:04:14,728 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:14,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:14,728 INFO L82 PathProgramCache]: Analyzing trace with hash -471723555, now seen corresponding path program 1 times [2020-12-09 07:04:14,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:14,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742816001] [2020-12-09 07:04:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-12-09 07:04:14,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742816001] [2020-12-09 07:04:14,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:14,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:14,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093592309] [2020-12-09 07:04:14,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:14,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:14,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:14,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:14,800 INFO L87 Difference]: Start difference. First operand 9012 states and 13314 transitions. Second operand 3 states. [2020-12-09 07:04:15,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:15,422 INFO L93 Difference]: Finished difference Result 22601 states and 33913 transitions. [2020-12-09 07:04:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:15,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2020-12-09 07:04:15,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:15,468 INFO L225 Difference]: With dead ends: 22601 [2020-12-09 07:04:15,468 INFO L226 Difference]: Without dead ends: 13590 [2020-12-09 07:04:15,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13590 states. [2020-12-09 07:04:15,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13590 to 13588. [2020-12-09 07:04:15,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13588 states. [2020-12-09 07:04:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 19768 transitions. [2020-12-09 07:04:15,646 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 19768 transitions. Word has length 183 [2020-12-09 07:04:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:15,647 INFO L481 AbstractCegarLoop]: Abstraction has 13588 states and 19768 transitions. [2020-12-09 07:04:15,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 19768 transitions. [2020-12-09 07:04:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-09 07:04:15,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:15,658 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:15,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 07:04:15,658 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:15,659 INFO L82 PathProgramCache]: Analyzing trace with hash 815348460, now seen corresponding path program 1 times [2020-12-09 07:04:15,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:15,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420553454] [2020-12-09 07:04:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 07:04:15,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420553454] [2020-12-09 07:04:15,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:15,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:15,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973356582] [2020-12-09 07:04:15,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:15,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:15,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:15,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:15,741 INFO L87 Difference]: Start difference. First operand 13588 states and 19768 transitions. Second operand 3 states. [2020-12-09 07:04:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:16,419 INFO L93 Difference]: Finished difference Result 33896 states and 49088 transitions. [2020-12-09 07:04:16,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:16,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-12-09 07:04:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:16,450 INFO L225 Difference]: With dead ends: 33896 [2020-12-09 07:04:16,450 INFO L226 Difference]: Without dead ends: 20309 [2020-12-09 07:04:16,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20309 states. [2020-12-09 07:04:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20309 to 20309. [2020-12-09 07:04:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20309 states. [2020-12-09 07:04:16,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20309 states to 20309 states and 29234 transitions. [2020-12-09 07:04:16,683 INFO L78 Accepts]: Start accepts. Automaton has 20309 states and 29234 transitions. Word has length 184 [2020-12-09 07:04:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:16,683 INFO L481 AbstractCegarLoop]: Abstraction has 20309 states and 29234 transitions. [2020-12-09 07:04:16,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:16,683 INFO L276 IsEmpty]: Start isEmpty. Operand 20309 states and 29234 transitions. [2020-12-09 07:04:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-12-09 07:04:16,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:16,698 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:16,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 07:04:16,698 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:16,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:16,699 INFO L82 PathProgramCache]: Analyzing trace with hash 169054701, now seen corresponding path program 2 times [2020-12-09 07:04:16,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:16,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002257107] [2020-12-09 07:04:16,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:16,779 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 58 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 07:04:16,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002257107] [2020-12-09 07:04:16,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058568392] [2020-12-09 07:04:16,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:16,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 07:04:16,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 07:04:16,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:04:16,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 07:04:17,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 07:04:17,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:04:17,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 07:04:17,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075054229] [2020-12-09 07:04:17,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:17,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:17,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:17,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:04:17,287 INFO L87 Difference]: Start difference. First operand 20309 states and 29234 transitions. Second operand 3 states. [2020-12-09 07:04:18,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:18,015 INFO L93 Difference]: Finished difference Result 54345 states and 78240 transitions. [2020-12-09 07:04:18,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:18,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2020-12-09 07:04:18,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:18,059 INFO L225 Difference]: With dead ends: 54345 [2020-12-09 07:04:18,059 INFO L226 Difference]: Without dead ends: 34037 [2020-12-09 07:04:18,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 379 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:04:18,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34037 states. [2020-12-09 07:04:18,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34037 to 34037. [2020-12-09 07:04:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34037 states. [2020-12-09 07:04:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34037 states to 34037 states and 48390 transitions. [2020-12-09 07:04:18,467 INFO L78 Accepts]: Start accepts. Automaton has 34037 states and 48390 transitions. Word has length 191 [2020-12-09 07:04:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:18,467 INFO L481 AbstractCegarLoop]: Abstraction has 34037 states and 48390 transitions. [2020-12-09 07:04:18,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 34037 states and 48390 transitions. [2020-12-09 07:04:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-09 07:04:18,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:18,504 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:18,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-09 07:04:18,706 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:18,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1616851356, now seen corresponding path program 1 times [2020-12-09 07:04:18,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:18,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234220847] [2020-12-09 07:04:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-09 07:04:18,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234220847] [2020-12-09 07:04:18,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102308769] [2020-12-09 07:04:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:19,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:04:19,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:19,158 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-09 07:04:19,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-09 07:04:19,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:04:19,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 07:04:19,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692229734] [2020-12-09 07:04:19,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:19,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:19,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:19,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:04:19,313 INFO L87 Difference]: Start difference. First operand 34037 states and 48390 transitions. Second operand 3 states. [2020-12-09 07:04:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:20,126 INFO L93 Difference]: Finished difference Result 87237 states and 125039 transitions. [2020-12-09 07:04:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:20,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-09 07:04:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:20,192 INFO L225 Difference]: With dead ends: 87237 [2020-12-09 07:04:20,192 INFO L226 Difference]: Without dead ends: 53201 [2020-12-09 07:04:20,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 475 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:04:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53201 states. [2020-12-09 07:04:20,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53201 to 53199. [2020-12-09 07:04:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53199 states. [2020-12-09 07:04:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53199 states to 53199 states and 73954 transitions. [2020-12-09 07:04:20,859 INFO L78 Accepts]: Start accepts. Automaton has 53199 states and 73954 transitions. Word has length 239 [2020-12-09 07:04:20,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:20,860 INFO L481 AbstractCegarLoop]: Abstraction has 53199 states and 73954 transitions. [2020-12-09 07:04:20,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:20,860 INFO L276 IsEmpty]: Start isEmpty. Operand 53199 states and 73954 transitions. [2020-12-09 07:04:20,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-12-09 07:04:20,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:20,891 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:21,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 07:04:21,093 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:21,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:21,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1685410862, now seen corresponding path program 1 times [2020-12-09 07:04:21,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:21,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059867427] [2020-12-09 07:04:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-09 07:04:21,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059867427] [2020-12-09 07:04:21,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:21,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:04:21,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000202083] [2020-12-09 07:04:21,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:21,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:21,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:21,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:21,209 INFO L87 Difference]: Start difference. First operand 53199 states and 73954 transitions. Second operand 3 states. [2020-12-09 07:04:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:22,120 INFO L93 Difference]: Finished difference Result 118409 states and 164937 transitions. [2020-12-09 07:04:22,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:22,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2020-12-09 07:04:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:22,186 INFO L225 Difference]: With dead ends: 118409 [2020-12-09 07:04:22,186 INFO L226 Difference]: Without dead ends: 65211 [2020-12-09 07:04:22,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65211 states. [2020-12-09 07:04:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65211 to 63352. [2020-12-09 07:04:22,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63352 states. [2020-12-09 07:04:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63352 states to 63352 states and 83076 transitions. [2020-12-09 07:04:22,978 INFO L78 Accepts]: Start accepts. Automaton has 63352 states and 83076 transitions. Word has length 246 [2020-12-09 07:04:22,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:22,979 INFO L481 AbstractCegarLoop]: Abstraction has 63352 states and 83076 transitions. [2020-12-09 07:04:22,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:22,979 INFO L276 IsEmpty]: Start isEmpty. Operand 63352 states and 83076 transitions. [2020-12-09 07:04:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-12-09 07:04:23,019 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:23,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:23,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 07:04:23,020 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:23,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:23,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2124609268, now seen corresponding path program 1 times [2020-12-09 07:04:23,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:23,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010899311] [2020-12-09 07:04:23,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:23,130 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 07:04:23,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010899311] [2020-12-09 07:04:23,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:23,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:23,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262672466] [2020-12-09 07:04:23,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:23,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:23,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:23,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:23,132 INFO L87 Difference]: Start difference. First operand 63352 states and 83076 transitions. Second operand 3 states. [2020-12-09 07:04:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:24,274 INFO L93 Difference]: Finished difference Result 152729 states and 198714 transitions. [2020-12-09 07:04:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:24,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 254 [2020-12-09 07:04:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:24,353 INFO L225 Difference]: With dead ends: 152729 [2020-12-09 07:04:24,354 INFO L226 Difference]: Without dead ends: 89378 [2020-12-09 07:04:24,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89378 states. [2020-12-09 07:04:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89378 to 87233. [2020-12-09 07:04:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87233 states. [2020-12-09 07:04:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87233 states to 87233 states and 110088 transitions. [2020-12-09 07:04:25,332 INFO L78 Accepts]: Start accepts. Automaton has 87233 states and 110088 transitions. Word has length 254 [2020-12-09 07:04:25,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:25,332 INFO L481 AbstractCegarLoop]: Abstraction has 87233 states and 110088 transitions. [2020-12-09 07:04:25,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:25,332 INFO L276 IsEmpty]: Start isEmpty. Operand 87233 states and 110088 transitions. [2020-12-09 07:04:25,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-12-09 07:04:25,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:25,440 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:25,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 07:04:25,440 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:25,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1497137628, now seen corresponding path program 1 times [2020-12-09 07:04:25,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:25,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337950420] [2020-12-09 07:04:25,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-09 07:04:25,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337950420] [2020-12-09 07:04:25,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:04:25,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:04:25,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633367769] [2020-12-09 07:04:25,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:25,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:25,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:25,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:25,562 INFO L87 Difference]: Start difference. First operand 87233 states and 110088 transitions. Second operand 3 states. [2020-12-09 07:04:26,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:26,687 INFO L93 Difference]: Finished difference Result 198632 states and 253034 transitions. [2020-12-09 07:04:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:26,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 267 [2020-12-09 07:04:26,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:26,808 INFO L225 Difference]: With dead ends: 198632 [2020-12-09 07:04:26,808 INFO L226 Difference]: Without dead ends: 111400 [2020-12-09 07:04:26,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:04:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111400 states. [2020-12-09 07:04:28,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111400 to 109970. [2020-12-09 07:04:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109970 states. [2020-12-09 07:04:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109970 states to 109970 states and 134389 transitions. [2020-12-09 07:04:28,376 INFO L78 Accepts]: Start accepts. Automaton has 109970 states and 134389 transitions. Word has length 267 [2020-12-09 07:04:28,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:28,376 INFO L481 AbstractCegarLoop]: Abstraction has 109970 states and 134389 transitions. [2020-12-09 07:04:28,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:28,376 INFO L276 IsEmpty]: Start isEmpty. Operand 109970 states and 134389 transitions. [2020-12-09 07:04:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-12-09 07:04:28,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:28,420 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:28,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 07:04:28,420 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:28,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:28,420 INFO L82 PathProgramCache]: Analyzing trace with hash -353774999, now seen corresponding path program 1 times [2020-12-09 07:04:28,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:28,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106956352] [2020-12-09 07:04:28,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 102 proven. 6 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 07:04:28,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106956352] [2020-12-09 07:04:28,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939310311] [2020-12-09 07:04:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:28,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:04:28,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 153 proven. 58 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-09 07:04:29,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 153 proven. 58 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-09 07:04:29,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [518284994] [2020-12-09 07:04:29,305 INFO L159 IcfgInterpreter]: Started Sifa with 145 locations of interest [2020-12-09 07:04:29,305 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:04:29,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:04:29,313 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:04:29,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:04:30,335 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:30,484 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:30,714 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:30,849 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:31,083 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:31,240 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:31,596 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:31,723 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:31,902 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:32,023 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:32,234 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:32,383 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:32,713 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:32,830 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:32,996 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:33,114 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:33,371 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 255 [2020-12-09 07:04:37,048 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 07:04:37,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:04:37,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2020-12-09 07:04:37,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056438972] [2020-12-09 07:04:37,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:04:37,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:37,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:04:37,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:04:37,052 INFO L87 Difference]: Start difference. First operand 109970 states and 134389 transitions. Second operand 6 states. [2020-12-09 07:04:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:40,704 INFO L93 Difference]: Finished difference Result 316466 states and 386071 transitions. [2020-12-09 07:04:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 07:04:40,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 279 [2020-12-09 07:04:40,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:41,057 INFO L225 Difference]: With dead ends: 316466 [2020-12-09 07:04:41,057 INFO L226 Difference]: Without dead ends: 206497 [2020-12-09 07:04:41,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-09 07:04:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206497 states. [2020-12-09 07:04:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206497 to 153585. [2020-12-09 07:04:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153585 states. [2020-12-09 07:04:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153585 states to 153585 states and 180091 transitions. [2020-12-09 07:04:43,570 INFO L78 Accepts]: Start accepts. Automaton has 153585 states and 180091 transitions. Word has length 279 [2020-12-09 07:04:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:43,570 INFO L481 AbstractCegarLoop]: Abstraction has 153585 states and 180091 transitions. [2020-12-09 07:04:43,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:04:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 153585 states and 180091 transitions. [2020-12-09 07:04:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-12-09 07:04:43,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:43,680 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:43,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-09 07:04:43,881 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:43,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:43,883 INFO L82 PathProgramCache]: Analyzing trace with hash -896650934, now seen corresponding path program 1 times [2020-12-09 07:04:43,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:43,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466107879] [2020-12-09 07:04:43,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:44,054 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 110 proven. 6 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 07:04:44,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466107879] [2020-12-09 07:04:44,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302291206] [2020-12-09 07:04:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:44,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:44,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:04:44,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:44,399 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 174 proven. 30 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 07:04:44,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 07:04:44,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 07:04:44,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2020-12-09 07:04:44,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828545602] [2020-12-09 07:04:44,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:04:44,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:44,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:04:44,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:04:44,579 INFO L87 Difference]: Start difference. First operand 153585 states and 180091 transitions. Second operand 4 states. [2020-12-09 07:04:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:46,131 INFO L93 Difference]: Finished difference Result 297302 states and 350421 transitions. [2020-12-09 07:04:46,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:04:46,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 282 [2020-12-09 07:04:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:46,282 INFO L225 Difference]: With dead ends: 297302 [2020-12-09 07:04:46,282 INFO L226 Difference]: Without dead ends: 144147 [2020-12-09 07:04:46,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:04:46,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144147 states. [2020-12-09 07:04:48,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144147 to 141573. [2020-12-09 07:04:48,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141573 states. [2020-12-09 07:04:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141573 states to 141573 states and 166652 transitions. [2020-12-09 07:04:48,432 INFO L78 Accepts]: Start accepts. Automaton has 141573 states and 166652 transitions. Word has length 282 [2020-12-09 07:04:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:48,433 INFO L481 AbstractCegarLoop]: Abstraction has 141573 states and 166652 transitions. [2020-12-09 07:04:48,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:04:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand 141573 states and 166652 transitions. [2020-12-09 07:04:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-12-09 07:04:48,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:48,614 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:04:48,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-12-09 07:04:48,829 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:48,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:48,830 INFO L82 PathProgramCache]: Analyzing trace with hash -72248954, now seen corresponding path program 1 times [2020-12-09 07:04:48,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:48,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256251668] [2020-12-09 07:04:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 149 proven. 6 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-12-09 07:04:48,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256251668] [2020-12-09 07:04:48,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935978959] [2020-12-09 07:04:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:49,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:04:49,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-12-09 07:04:49,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-12-09 07:04:49,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:04:49,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [3] total 4 [2020-12-09 07:04:49,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495594371] [2020-12-09 07:04:49,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:04:49,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:49,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:04:49,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:04:49,555 INFO L87 Difference]: Start difference. First operand 141573 states and 166652 transitions. Second operand 3 states. [2020-12-09 07:04:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:50,370 INFO L93 Difference]: Finished difference Result 247252 states and 288739 transitions. [2020-12-09 07:04:50,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:50,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 299 [2020-12-09 07:04:50,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:50,473 INFO L225 Difference]: With dead ends: 247252 [2020-12-09 07:04:50,473 INFO L226 Difference]: Without dead ends: 106109 [2020-12-09 07:04:50,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 596 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:04:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106109 states. [2020-12-09 07:04:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106109 to 106109. [2020-12-09 07:04:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106109 states. [2020-12-09 07:04:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106109 states to 106109 states and 121593 transitions. [2020-12-09 07:04:51,829 INFO L78 Accepts]: Start accepts. Automaton has 106109 states and 121593 transitions. Word has length 299 [2020-12-09 07:04:51,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:51,829 INFO L481 AbstractCegarLoop]: Abstraction has 106109 states and 121593 transitions. [2020-12-09 07:04:51,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:04:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 106109 states and 121593 transitions. [2020-12-09 07:04:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-12-09 07:04:51,857 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:51,858 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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] [2020-12-09 07:04:52,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2020-12-09 07:04:52,059 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:52,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:52,061 INFO L82 PathProgramCache]: Analyzing trace with hash 450439447, now seen corresponding path program 1 times [2020-12-09 07:04:52,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:52,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787360031] [2020-12-09 07:04:52,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 160 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 07:04:52,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787360031] [2020-12-09 07:04:52,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126689932] [2020-12-09 07:04:52,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:52,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:04:52,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 07:04:52,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 07:04:52,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:04:52,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-12-09 07:04:52,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649295182] [2020-12-09 07:04:52,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:04:52,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:04:52,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:04:52,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:04:52,800 INFO L87 Difference]: Start difference. First operand 106109 states and 121593 transitions. Second operand 4 states. [2020-12-09 07:04:53,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:04:53,795 INFO L93 Difference]: Finished difference Result 219081 states and 251052 transitions. [2020-12-09 07:04:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:04:53,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 304 [2020-12-09 07:04:53,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:04:53,906 INFO L225 Difference]: With dead ends: 219081 [2020-12-09 07:04:53,906 INFO L226 Difference]: Without dead ends: 113402 [2020-12-09 07:04:53,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:04:54,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113402 states. [2020-12-09 07:04:55,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113402 to 112401. [2020-12-09 07:04:55,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112401 states. [2020-12-09 07:04:55,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112401 states to 112401 states and 128665 transitions. [2020-12-09 07:04:55,423 INFO L78 Accepts]: Start accepts. Automaton has 112401 states and 128665 transitions. Word has length 304 [2020-12-09 07:04:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:04:55,423 INFO L481 AbstractCegarLoop]: Abstraction has 112401 states and 128665 transitions. [2020-12-09 07:04:55,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:04:55,424 INFO L276 IsEmpty]: Start isEmpty. Operand 112401 states and 128665 transitions. [2020-12-09 07:04:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-12-09 07:04:55,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:04:55,463 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-12-09 07:04:55,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:55,664 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:04:55,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:04:55,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1819545616, now seen corresponding path program 1 times [2020-12-09 07:04:55,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:04:55,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366269240] [2020-12-09 07:04:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:04:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 188 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:04:55,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366269240] [2020-12-09 07:04:55,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467736744] [2020-12-09 07:04:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:04:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:04:56,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:04:56,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:04:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 188 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 07:04:56,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:04:56,438 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 188 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 07:04:56,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1335951105] [2020-12-09 07:04:56,443 INFO L159 IcfgInterpreter]: Started Sifa with 145 locations of interest [2020-12-09 07:04:56,443 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:04:56,444 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:04:56,444 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:04:56,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:04:58,217 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:58,368 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:58,553 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:58,671 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:58,830 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:58,948 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-12-09 07:04:59,262 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:59,380 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:59,548 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:59,667 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:59,821 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:04:59,951 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:05:00,261 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:05:00,378 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:05:00,545 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:05:00,662 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-12-09 07:05:00,902 WARN L197 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 255 [2020-12-09 07:05:07,605 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 07:05:07,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 07:05:07,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 5 [2020-12-09 07:05:07,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933433304] [2020-12-09 07:05:07,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:05:07,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:05:07,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:05:07,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:05:07,607 INFO L87 Difference]: Start difference. First operand 112401 states and 128665 transitions. Second operand 6 states. [2020-12-09 07:05:10,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:05:10,846 INFO L93 Difference]: Finished difference Result 418709 states and 479289 transitions. [2020-12-09 07:05:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 07:05:10,847 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 332 [2020-12-09 07:05:10,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:05:11,168 INFO L225 Difference]: With dead ends: 418709 [2020-12-09 07:05:11,169 INFO L226 Difference]: Without dead ends: 307453 [2020-12-09 07:05:11,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 662 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-12-09 07:05:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307453 states. [2020-12-09 07:05:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307453 to 190479. [2020-12-09 07:05:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190479 states. [2020-12-09 07:05:14,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190479 states to 190479 states and 217974 transitions. [2020-12-09 07:05:14,321 INFO L78 Accepts]: Start accepts. Automaton has 190479 states and 217974 transitions. Word has length 332 [2020-12-09 07:05:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:05:14,321 INFO L481 AbstractCegarLoop]: Abstraction has 190479 states and 217974 transitions. [2020-12-09 07:05:14,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:05:14,321 INFO L276 IsEmpty]: Start isEmpty. Operand 190479 states and 217974 transitions. [2020-12-09 07:05:14,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-12-09 07:05:14,373 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:05:14,373 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-12-09 07:05:14,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-12-09 07:05:14,575 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:05:14,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:05:14,576 INFO L82 PathProgramCache]: Analyzing trace with hash -556435102, now seen corresponding path program 1 times [2020-12-09 07:05:14,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:05:14,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441771180] [2020-12-09 07:05:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:05:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 191 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:05:14,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441771180] [2020-12-09 07:05:14,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214296627] [2020-12-09 07:05:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:05:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:14,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:05:14,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:05:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 07:05:15,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:05:15,340 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 07:05:15,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:05:15,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 7 [2020-12-09 07:05:15,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044872139] [2020-12-09 07:05:15,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:05:15,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:05:15,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:05:15,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:05:15,342 INFO L87 Difference]: Start difference. First operand 190479 states and 217974 transitions. Second operand 4 states. [2020-12-09 07:05:17,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:05:17,550 INFO L93 Difference]: Finished difference Result 458892 states and 523014 transitions. [2020-12-09 07:05:17,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:05:17,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 335 [2020-12-09 07:05:17,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:05:17,995 INFO L225 Difference]: With dead ends: 458892 [2020-12-09 07:05:17,995 INFO L226 Difference]: Without dead ends: 269558 [2020-12-09 07:05:18,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:05:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269558 states. [2020-12-09 07:05:21,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269558 to 247965. [2020-12-09 07:05:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247965 states. [2020-12-09 07:05:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247965 states to 247965 states and 282274 transitions. [2020-12-09 07:05:21,356 INFO L78 Accepts]: Start accepts. Automaton has 247965 states and 282274 transitions. Word has length 335 [2020-12-09 07:05:21,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:05:21,357 INFO L481 AbstractCegarLoop]: Abstraction has 247965 states and 282274 transitions. [2020-12-09 07:05:21,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:05:21,357 INFO L276 IsEmpty]: Start isEmpty. Operand 247965 states and 282274 transitions. [2020-12-09 07:05:21,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-12-09 07:05:21,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:05:21,562 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:05:21,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable305 [2020-12-09 07:05:21,764 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:05:21,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:05:21,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1673671763, now seen corresponding path program 1 times [2020-12-09 07:05:21,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:05:21,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586429159] [2020-12-09 07:05:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:05:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-09 07:05:22,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586429159] [2020-12-09 07:05:22,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:05:22,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:05:22,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454813890] [2020-12-09 07:05:22,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:05:22,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:05:22,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:05:22,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:05:22,019 INFO L87 Difference]: Start difference. First operand 247965 states and 282274 transitions. Second operand 3 states. [2020-12-09 07:05:23,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:05:23,556 INFO L93 Difference]: Finished difference Result 448882 states and 510604 transitions. [2020-12-09 07:05:23,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:05:23,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 353 [2020-12-09 07:05:23,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:05:23,734 INFO L225 Difference]: With dead ends: 448882 [2020-12-09 07:05:23,734 INFO L226 Difference]: Without dead ends: 178467 [2020-12-09 07:05:23,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:05:23,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178467 states. [2020-12-09 07:05:25,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178467 to 144290. [2020-12-09 07:05:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144290 states. [2020-12-09 07:05:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144290 states to 144290 states and 160737 transitions. [2020-12-09 07:05:25,818 INFO L78 Accepts]: Start accepts. Automaton has 144290 states and 160737 transitions. Word has length 353 [2020-12-09 07:05:25,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:05:25,818 INFO L481 AbstractCegarLoop]: Abstraction has 144290 states and 160737 transitions. [2020-12-09 07:05:25,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:05:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 144290 states and 160737 transitions. [2020-12-09 07:05:25,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2020-12-09 07:05:25,849 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:05:25,849 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 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, 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] [2020-12-09 07:05:25,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2020-12-09 07:05:25,849 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:05:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:05:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1665395301, now seen corresponding path program 1 times [2020-12-09 07:05:25,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:05:25,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750654498] [2020-12-09 07:05:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:05:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-09 07:05:26,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750654498] [2020-12-09 07:05:26,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:05:26,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:05:26,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771955920] [2020-12-09 07:05:26,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:05:26,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:05:26,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:05:26,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:05:26,015 INFO L87 Difference]: Start difference. First operand 144290 states and 160737 transitions. Second operand 3 states. [2020-12-09 07:05:27,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:05:27,194 INFO L93 Difference]: Finished difference Result 287864 states and 321025 transitions. [2020-12-09 07:05:27,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:05:27,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 358 [2020-12-09 07:05:27,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:05:27,338 INFO L225 Difference]: With dead ends: 287864 [2020-12-09 07:05:27,338 INFO L226 Difference]: Without dead ends: 144719 [2020-12-09 07:05:27,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:05:27,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144719 states. [2020-12-09 07:05:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144719 to 104250. [2020-12-09 07:05:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104250 states. [2020-12-09 07:05:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104250 states to 104250 states and 115529 transitions. [2020-12-09 07:05:29,102 INFO L78 Accepts]: Start accepts. Automaton has 104250 states and 115529 transitions. Word has length 358 [2020-12-09 07:05:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:05:29,102 INFO L481 AbstractCegarLoop]: Abstraction has 104250 states and 115529 transitions. [2020-12-09 07:05:29,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:05:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand 104250 states and 115529 transitions. [2020-12-09 07:05:29,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-12-09 07:05:29,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:05:29,129 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:05:29,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2020-12-09 07:05:29,129 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:05:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:05:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash 771260271, now seen corresponding path program 1 times [2020-12-09 07:05:29,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:05:29,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521049754] [2020-12-09 07:05:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:05:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 309 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 07:05:29,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521049754] [2020-12-09 07:05:29,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371471102] [2020-12-09 07:05:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:05:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:05:29,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:05:29,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:05:29,968 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-09 07:05:29,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:05:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-12-09 07:05:30,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 07:05:30,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 7 [2020-12-09 07:05:30,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96725086] [2020-12-09 07:05:30,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:05:30,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:05:30,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:05:30,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:05:30,289 INFO L87 Difference]: Start difference. First operand 104250 states and 115529 transitions. Second operand 4 states. [2020-12-09 07:05:31,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:05:31,760 INFO L93 Difference]: Finished difference Result 241959 states and 268484 transitions. [2020-12-09 07:05:31,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:05:31,760 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2020-12-09 07:05:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:05:31,761 INFO L225 Difference]: With dead ends: 241959 [2020-12-09 07:05:31,761 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 07:05:31,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 721 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:05:31,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 07:05:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 07:05:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 07:05:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 07:05:31,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 362 [2020-12-09 07:05:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:05:31,815 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 07:05:31,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:05:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 07:05:31,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:05:32,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:05:32,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 07:06:00,870 WARN L197 SmtUtils]: Spent 28.80 s on a formula simplification. DAG size of input: 4406 DAG size of output: 1184 [2020-12-09 07:06:29,511 WARN L197 SmtUtils]: Spent 28.63 s on a formula simplification. DAG size of input: 4406 DAG size of output: 1184 [2020-12-09 07:06:41,833 WARN L197 SmtUtils]: Spent 12.31 s on a formula simplification. DAG size of input: 984 DAG size of output: 92 [2020-12-09 07:06:53,922 WARN L197 SmtUtils]: Spent 12.08 s on a formula simplification. DAG size of input: 984 DAG size of output: 92 [2020-12-09 07:06:53,925 INFO L262 CegarLoopResult]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,925 INFO L262 CegarLoopResult]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,925 INFO L262 CegarLoopResult]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,925 INFO L262 CegarLoopResult]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,926 INFO L262 CegarLoopResult]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,927 INFO L262 CegarLoopResult]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,928 INFO L262 CegarLoopResult]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,929 INFO L262 CegarLoopResult]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1546) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,930 INFO L262 CegarLoopResult]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,931 INFO L262 CegarLoopResult]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,931 INFO L262 CegarLoopResult]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,931 INFO L262 CegarLoopResult]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,931 INFO L262 CegarLoopResult]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,931 INFO L262 CegarLoopResult]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,931 INFO L262 CegarLoopResult]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,931 INFO L262 CegarLoopResult]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,932 INFO L258 CegarLoopResult]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse18 (= ~a7~0 1)) (.cse6 (= ~a12~0 1)) (.cse10 (= ~a11~0 0)) (.cse0 (= ~a6~0 0)) (.cse23 (= ~a8~0 1)) (.cse9 (= ~a26~0 1)) (.cse11 (= ~a6~0 1)) (.cse16 (= ~a11~0 1))) (let ((.cse3 (not .cse16)) (.cse19 (= ~a26~0 ~a7~0)) (.cse14 (<= ~a3~0 1)) (.cse17 (= ~a15~0 1)) (.cse22 (or .cse9 .cse11)) (.cse20 (or (and .cse0 .cse23) .cse11)) (.cse21 (or .cse16 (and .cse10 .cse23))) (.cse2 (= ~a3~0 0)) (.cse7 (= ~a27~0 1)) (.cse12 (not .cse6)) (.cse4 (not .cse18)) (.cse1 (= ~a5~0 1)) (.cse15 (<= ~a12~0 0)) (.cse13 (<= 1 ~a3~0)) (.cse8 (= ~a16~0 1)) (.cse5 (= ~a26~0 ~a6~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse1 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse6 .cse1 .cse8 .cse9 .cse2 .cse3) (and .cse0 .cse1 .cse12 .cse13 .cse3 .cse4 .cse14 .cse5) (and .cse1 .cse15 .cse8 (= ~a26~0 ~a11~0) .cse16 .cse17) (and .cse0 .cse1 .cse7 .cse15 .cse9 .cse2 .cse3 .cse17 .cse4) (and .cse6 .cse1 .cse7 .cse8 .cse9 .cse2) (and .cse6 .cse1 .cse7 .cse8 .cse2 .cse17 .cse11 .cse16) (and .cse1 .cse7 .cse8 .cse2 .cse11 .cse5) (and .cse6 .cse1 .cse7 .cse9 .cse2 .cse4) (and .cse0 .cse6 .cse1 .cse9 .cse2 .cse16 .cse4) (and .cse0 .cse1 .cse12 .cse13 .cse8 .cse3 .cse14 .cse5) (and .cse6 .cse1 .cse7 .cse10 .cse17 .cse11 .cse14 .cse5) (and .cse0 .cse1 .cse7 .cse15 .cse8 .cse16) (and .cse1 .cse7 .cse15 .cse18 .cse8 .cse2 .cse16 .cse19) (and .cse1 .cse20 .cse21 .cse8 .cse5) (and .cse0 .cse6 .cse1 .cse8 .cse9 .cse2) (and .cse0 .cse1 .cse7 .cse12 .cse13 .cse8 .cse5) (and .cse1 .cse7 .cse12 .cse10 .cse11 .cse4) (and .cse0 .cse1 .cse7 .cse15 .cse8 .cse9 .cse2 .cse17) (and .cse6 .cse1 .cse7 .cse2 .cse3 .cse17 .cse11 .cse5) (and .cse1 (not .cse9) .cse7 .cse15 .cse8 .cse2 .cse16 .cse22) (and .cse6 .cse1 .cse8 .cse2 (<= ~a7~0 0) .cse3 .cse19) (and .cse1 .cse9 .cse2 .cse10 .cse11 .cse4) (and .cse7 .cse1 .cse9 .cse10 .cse11 .cse4) (and .cse1 .cse7 .cse15 (or .cse16 .cse23) .cse13 .cse11 .cse14 .cse5) (and .cse1 .cse13 .cse8 .cse22) (and .cse6 .cse1 .cse7 .cse2 .cse17 .cse11 .cse16 .cse4) (and .cse1 .cse13 .cse22 .cse4) (and .cse1 .cse21 .cse20 .cse4 .cse5) (and .cse1 .cse7 .cse15 .cse2 .cse16 .cse11 .cse4) (and .cse0 .cse1 .cse7 .cse21 .cse8 .cse12 .cse5) (and .cse0 .cse1 .cse7 .cse15 .cse8 .cse2 .cse5) (and .cse0 .cse6 .cse1 .cse7 .cse9 .cse10 .cse4) (and .cse1 .cse12 .cse11 .cse4 .cse5) (and .cse0 .cse1 .cse15 .cse13 .cse16 .cse4 .cse5) (and .cse0 .cse1 .cse7 .cse12 .cse4 .cse5) (and .cse0 .cse1 .cse15 .cse13 .cse8 .cse16 .cse5)))) [2020-12-09 07:06:53,932 INFO L262 CegarLoopResult]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,932 INFO L262 CegarLoopResult]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,932 INFO L262 CegarLoopResult]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,932 INFO L262 CegarLoopResult]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L265 CegarLoopResult]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,933 INFO L262 CegarLoopResult]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,934 INFO L262 CegarLoopResult]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,934 INFO L262 CegarLoopResult]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,934 INFO L262 CegarLoopResult]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,934 INFO L258 CegarLoopResult]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse18 (= ~a7~0 1)) (.cse6 (= ~a12~0 1)) (.cse10 (= ~a11~0 0)) (.cse0 (= ~a6~0 0)) (.cse23 (= ~a8~0 1)) (.cse9 (= ~a26~0 1)) (.cse11 (= ~a6~0 1)) (.cse16 (= ~a11~0 1))) (let ((.cse3 (not .cse16)) (.cse19 (= ~a26~0 ~a7~0)) (.cse14 (<= ~a3~0 1)) (.cse17 (= ~a15~0 1)) (.cse22 (or .cse9 .cse11)) (.cse20 (or (and .cse0 .cse23) .cse11)) (.cse21 (or .cse16 (and .cse10 .cse23))) (.cse2 (= ~a3~0 0)) (.cse7 (= ~a27~0 1)) (.cse12 (not .cse6)) (.cse4 (not .cse18)) (.cse1 (= ~a5~0 1)) (.cse15 (<= ~a12~0 0)) (.cse13 (<= 1 ~a3~0)) (.cse8 (= ~a16~0 1)) (.cse5 (= ~a26~0 ~a6~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse1 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse6 .cse1 .cse8 .cse9 .cse2 .cse3) (and .cse0 .cse1 .cse12 .cse13 .cse3 .cse4 .cse14 .cse5) (and .cse1 .cse15 .cse8 (= ~a26~0 ~a11~0) .cse16 .cse17) (and .cse0 .cse1 .cse7 .cse15 .cse9 .cse2 .cse3 .cse17 .cse4) (and .cse6 .cse1 .cse7 .cse8 .cse9 .cse2) (and .cse6 .cse1 .cse7 .cse8 .cse2 .cse17 .cse11 .cse16) (and .cse1 .cse7 .cse8 .cse2 .cse11 .cse5) (and .cse6 .cse1 .cse7 .cse9 .cse2 .cse4) (and .cse0 .cse6 .cse1 .cse9 .cse2 .cse16 .cse4) (and .cse0 .cse1 .cse12 .cse13 .cse8 .cse3 .cse14 .cse5) (and .cse6 .cse1 .cse7 .cse10 .cse17 .cse11 .cse14 .cse5) (and .cse0 .cse1 .cse7 .cse15 .cse8 .cse16) (and .cse1 .cse7 .cse15 .cse18 .cse8 .cse2 .cse16 .cse19) (and .cse1 .cse20 .cse21 .cse8 .cse5) (and .cse0 .cse6 .cse1 .cse8 .cse9 .cse2) (and .cse0 .cse1 .cse7 .cse12 .cse13 .cse8 .cse5) (and .cse1 .cse7 .cse12 .cse10 .cse11 .cse4) (and .cse0 .cse1 .cse7 .cse15 .cse8 .cse9 .cse2 .cse17) (and .cse6 .cse1 .cse7 .cse2 .cse3 .cse17 .cse11 .cse5) (and .cse1 (not .cse9) .cse7 .cse15 .cse8 .cse2 .cse16 .cse22) (and .cse6 .cse1 .cse8 .cse2 (<= ~a7~0 0) .cse3 .cse19) (and .cse1 .cse9 .cse2 .cse10 .cse11 .cse4) (and .cse7 .cse1 .cse9 .cse10 .cse11 .cse4) (and .cse1 .cse7 .cse15 (or .cse16 .cse23) .cse13 .cse11 .cse14 .cse5) (and .cse1 .cse13 .cse8 .cse22) (and .cse6 .cse1 .cse7 .cse2 .cse17 .cse11 .cse16 .cse4) (and .cse1 .cse13 .cse22 .cse4) (and .cse1 .cse21 .cse20 .cse4 .cse5) (and .cse1 .cse7 .cse15 .cse2 .cse16 .cse11 .cse4) (and .cse0 .cse1 .cse7 .cse21 .cse8 .cse12 .cse5) (and .cse0 .cse1 .cse7 .cse15 .cse8 .cse2 .cse5) (and .cse0 .cse6 .cse1 .cse7 .cse9 .cse10 .cse4) (and .cse1 .cse12 .cse11 .cse4 .cse5) (and .cse0 .cse1 .cse15 .cse13 .cse16 .cse4 .cse5) (and .cse0 .cse1 .cse7 .cse12 .cse4 .cse5) (and .cse0 .cse1 .cse15 .cse13 .cse8 .cse16 .cse5)))) [2020-12-09 07:06:53,934 INFO L262 CegarLoopResult]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,934 INFO L262 CegarLoopResult]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L1673(line 1673) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,935 INFO L262 CegarLoopResult]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L1542-1(lines 64 1660) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L1545-1(lines 64 1660) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L1546(line 1546) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,936 INFO L262 CegarLoopResult]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,937 INFO L262 CegarLoopResult]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,937 INFO L262 CegarLoopResult]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,937 INFO L262 CegarLoopResult]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,937 INFO L262 CegarLoopResult]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,937 INFO L262 CegarLoopResult]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,937 INFO L262 CegarLoopResult]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,937 INFO L262 CegarLoopResult]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,937 INFO L262 CegarLoopResult]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,937 INFO L262 CegarLoopResult]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2020-12-09 07:06:53,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:06:53 BoogieIcfgContainer [2020-12-09 07:06:53,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:06:53,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:06:53,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:06:53,977 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:06:53,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:04:09" (3/4) ... [2020-12-09 07:06:53,979 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 07:06:54,003 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2020-12-09 07:06:54,006 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 07:06:54,009 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 07:06:54,012 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 07:06:54,142 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_32bd03a4-aa6e-4ef9-9021-70d057ac78e9/bin/utaipan/witness.graphml [2020-12-09 07:06:54,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:06:54,142 INFO L168 Benchmark]: Toolchain (without parser) took 167912.97 ms. Allocated memory was 96.5 MB in the beginning and 8.0 GB in the end (delta: 7.9 GB). Free memory was 72.1 MB in the beginning and 923.0 MB in the end (delta: -851.0 MB). Peak memory consumption was 7.0 GB. Max. memory is 16.1 GB. [2020-12-09 07:06:54,142 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory is still 72.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:06:54,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.45 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 61.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:54,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.26 ms. Allocated memory is still 96.5 MB. Free memory was 61.9 MB in the beginning and 47.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:54,143 INFO L168 Benchmark]: Boogie Preprocessor took 82.99 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 47.6 MB in the beginning and 86.7 MB in the end (delta: -39.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:54,143 INFO L168 Benchmark]: RCFGBuilder took 2303.77 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 86.7 MB in the beginning and 129.8 MB in the end (delta: -43.1 MB). Peak memory consumption was 78.4 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:54,144 INFO L168 Benchmark]: TraceAbstraction took 164698.18 ms. Allocated memory was 197.1 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 128.8 MB in the beginning and 961.2 MB in the end (delta: -832.5 MB). Peak memory consumption was 7.2 GB. Max. memory is 16.1 GB. [2020-12-09 07:06:54,144 INFO L168 Benchmark]: Witness Printer took 165.46 ms. Allocated memory is still 8.0 GB. Free memory was 961.2 MB in the beginning and 923.0 MB in the end (delta: 38.2 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:54,145 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 96.5 MB. Free memory is still 72.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 578.45 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 61.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.26 ms. Allocated memory is still 96.5 MB. Free memory was 61.9 MB in the beginning and 47.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.99 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 47.6 MB in the beginning and 86.7 MB in the end (delta: -39.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2303.77 ms. Allocated memory was 130.0 MB in the beginning and 197.1 MB in the end (delta: 67.1 MB). Free memory was 86.7 MB in the beginning and 129.8 MB in the end (delta: -43.1 MB). Peak memory consumption was 78.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 164698.18 ms. Allocated memory was 197.1 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 128.8 MB in the beginning and 961.2 MB in the end (delta: -832.5 MB). Peak memory consumption was 7.2 GB. Max. memory is 16.1 GB. * Witness Printer took 165.46 ms. Allocated memory is still 8.0 GB. Free memory was 961.2 MB in the beginning and 923.0 MB in the end (delta: 38.2 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1546]: 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: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((a6 == 0 && a5 == 1) && a3 == 0) && !(a11 == 1)) && !(a7 == 1)) && a26 == a6) || ((((((a12 == 1 && a5 == 1) && a27 == 1) && a16 == 1) && a26 == 1) && a11 == 0) && a6 == 1)) || (((((a12 == 1 && a5 == 1) && a16 == 1) && a26 == 1) && a3 == 0) && !(a11 == 1))) || (((((((a6 == 0 && a5 == 1) && !(a12 == 1)) && 1 <= a3) && !(a11 == 1)) && !(a7 == 1)) && a3 <= 1) && a26 == a6)) || (((((a5 == 1 && a12 <= 0) && a16 == 1) && a26 == a11) && a11 == 1) && a15 == 1)) || ((((((((a6 == 0 && a5 == 1) && a27 == 1) && a12 <= 0) && a26 == 1) && a3 == 0) && !(a11 == 1)) && a15 == 1) && !(a7 == 1))) || (((((a12 == 1 && a5 == 1) && a27 == 1) && a16 == 1) && a26 == 1) && a3 == 0)) || (((((((a12 == 1 && a5 == 1) && a27 == 1) && a16 == 1) && a3 == 0) && a15 == 1) && a6 == 1) && a11 == 1)) || (((((a5 == 1 && a27 == 1) && a16 == 1) && a3 == 0) && a6 == 1) && a26 == a6)) || (((((a12 == 1 && a5 == 1) && a27 == 1) && a26 == 1) && a3 == 0) && !(a7 == 1))) || ((((((a6 == 0 && a12 == 1) && a5 == 1) && a26 == 1) && a3 == 0) && a11 == 1) && !(a7 == 1))) || (((((((a6 == 0 && a5 == 1) && !(a12 == 1)) && 1 <= a3) && a16 == 1) && !(a11 == 1)) && a3 <= 1) && a26 == a6)) || (((((((a12 == 1 && a5 == 1) && a27 == 1) && a11 == 0) && a15 == 1) && a6 == 1) && a3 <= 1) && a26 == a6)) || (((((a6 == 0 && a5 == 1) && a27 == 1) && a12 <= 0) && a16 == 1) && a11 == 1)) || (((((((a5 == 1 && a27 == 1) && a12 <= 0) && a7 == 1) && a16 == 1) && a3 == 0) && a11 == 1) && a26 == a7)) || ((((a5 == 1 && ((a6 == 0 && a8 == 1) || a6 == 1)) && (a11 == 1 || (a11 == 0 && a8 == 1))) && a16 == 1) && a26 == a6)) || (((((a6 == 0 && a12 == 1) && a5 == 1) && a16 == 1) && a26 == 1) && a3 == 0)) || ((((((a6 == 0 && a5 == 1) && a27 == 1) && !(a12 == 1)) && 1 <= a3) && a16 == 1) && a26 == a6)) || (((((a5 == 1 && a27 == 1) && !(a12 == 1)) && a11 == 0) && a6 == 1) && !(a7 == 1))) || (((((((a6 == 0 && a5 == 1) && a27 == 1) && a12 <= 0) && a16 == 1) && a26 == 1) && a3 == 0) && a15 == 1)) || (((((((a12 == 1 && a5 == 1) && a27 == 1) && a3 == 0) && !(a11 == 1)) && a15 == 1) && a6 == 1) && a26 == a6)) || (((((((a5 == 1 && !(a26 == 1)) && a27 == 1) && a12 <= 0) && a16 == 1) && a3 == 0) && a11 == 1) && (a26 == 1 || a6 == 1))) || ((((((a12 == 1 && a5 == 1) && a16 == 1) && a3 == 0) && a7 <= 0) && !(a11 == 1)) && a26 == a7)) || (((((a5 == 1 && a26 == 1) && a3 == 0) && a11 == 0) && a6 == 1) && !(a7 == 1))) || (((((a27 == 1 && a5 == 1) && a26 == 1) && a11 == 0) && a6 == 1) && !(a7 == 1))) || (((((((a5 == 1 && a27 == 1) && a12 <= 0) && (a11 == 1 || a8 == 1)) && 1 <= a3) && a6 == 1) && a3 <= 1) && a26 == a6)) || (((a5 == 1 && 1 <= a3) && a16 == 1) && (a26 == 1 || a6 == 1))) || (((((((a12 == 1 && a5 == 1) && a27 == 1) && a3 == 0) && a15 == 1) && a6 == 1) && a11 == 1) && !(a7 == 1))) || (((a5 == 1 && 1 <= a3) && (a26 == 1 || a6 == 1)) && !(a7 == 1))) || ((((a5 == 1 && (a11 == 1 || (a11 == 0 && a8 == 1))) && ((a6 == 0 && a8 == 1) || a6 == 1)) && !(a7 == 1)) && a26 == a6)) || ((((((a5 == 1 && a27 == 1) && a12 <= 0) && a3 == 0) && a11 == 1) && a6 == 1) && !(a7 == 1))) || ((((((a6 == 0 && a5 == 1) && a27 == 1) && (a11 == 1 || (a11 == 0 && a8 == 1))) && a16 == 1) && !(a12 == 1)) && a26 == a6)) || ((((((a6 == 0 && a5 == 1) && a27 == 1) && a12 <= 0) && a16 == 1) && a3 == 0) && a26 == a6)) || ((((((a6 == 0 && a12 == 1) && a5 == 1) && a27 == 1) && a26 == 1) && a11 == 0) && !(a7 == 1))) || ((((a5 == 1 && !(a12 == 1)) && a6 == 1) && !(a7 == 1)) && a26 == a6)) || ((((((a6 == 0 && a5 == 1) && a12 <= 0) && 1 <= a3) && a11 == 1) && !(a7 == 1)) && a26 == a6)) || (((((a6 == 0 && a5 == 1) && a27 == 1) && !(a12 == 1)) && !(a7 == 1)) && a26 == a6)) || ((((((a6 == 0 && a5 == 1) && a12 <= 0) && 1 <= a3) && a16 == 1) && a11 == 1) && a26 == a6) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((((((((((((((a6 == 0 && a5 == 1) && a3 == 0) && !(a11 == 1)) && !(a7 == 1)) && a26 == a6) || ((((((a12 == 1 && a5 == 1) && a27 == 1) && a16 == 1) && a26 == 1) && a11 == 0) && a6 == 1)) || (((((a12 == 1 && a5 == 1) && a16 == 1) && a26 == 1) && a3 == 0) && !(a11 == 1))) || (((((((a6 == 0 && a5 == 1) && !(a12 == 1)) && 1 <= a3) && !(a11 == 1)) && !(a7 == 1)) && a3 <= 1) && a26 == a6)) || (((((a5 == 1 && a12 <= 0) && a16 == 1) && a26 == a11) && a11 == 1) && a15 == 1)) || ((((((((a6 == 0 && a5 == 1) && a27 == 1) && a12 <= 0) && a26 == 1) && a3 == 0) && !(a11 == 1)) && a15 == 1) && !(a7 == 1))) || (((((a12 == 1 && a5 == 1) && a27 == 1) && a16 == 1) && a26 == 1) && a3 == 0)) || (((((((a12 == 1 && a5 == 1) && a27 == 1) && a16 == 1) && a3 == 0) && a15 == 1) && a6 == 1) && a11 == 1)) || (((((a5 == 1 && a27 == 1) && a16 == 1) && a3 == 0) && a6 == 1) && a26 == a6)) || (((((a12 == 1 && a5 == 1) && a27 == 1) && a26 == 1) && a3 == 0) && !(a7 == 1))) || ((((((a6 == 0 && a12 == 1) && a5 == 1) && a26 == 1) && a3 == 0) && a11 == 1) && !(a7 == 1))) || (((((((a6 == 0 && a5 == 1) && !(a12 == 1)) && 1 <= a3) && a16 == 1) && !(a11 == 1)) && a3 <= 1) && a26 == a6)) || (((((((a12 == 1 && a5 == 1) && a27 == 1) && a11 == 0) && a15 == 1) && a6 == 1) && a3 <= 1) && a26 == a6)) || (((((a6 == 0 && a5 == 1) && a27 == 1) && a12 <= 0) && a16 == 1) && a11 == 1)) || (((((((a5 == 1 && a27 == 1) && a12 <= 0) && a7 == 1) && a16 == 1) && a3 == 0) && a11 == 1) && a26 == a7)) || ((((a5 == 1 && ((a6 == 0 && a8 == 1) || a6 == 1)) && (a11 == 1 || (a11 == 0 && a8 == 1))) && a16 == 1) && a26 == a6)) || (((((a6 == 0 && a12 == 1) && a5 == 1) && a16 == 1) && a26 == 1) && a3 == 0)) || ((((((a6 == 0 && a5 == 1) && a27 == 1) && !(a12 == 1)) && 1 <= a3) && a16 == 1) && a26 == a6)) || (((((a5 == 1 && a27 == 1) && !(a12 == 1)) && a11 == 0) && a6 == 1) && !(a7 == 1))) || (((((((a6 == 0 && a5 == 1) && a27 == 1) && a12 <= 0) && a16 == 1) && a26 == 1) && a3 == 0) && a15 == 1)) || (((((((a12 == 1 && a5 == 1) && a27 == 1) && a3 == 0) && !(a11 == 1)) && a15 == 1) && a6 == 1) && a26 == a6)) || (((((((a5 == 1 && !(a26 == 1)) && a27 == 1) && a12 <= 0) && a16 == 1) && a3 == 0) && a11 == 1) && (a26 == 1 || a6 == 1))) || ((((((a12 == 1 && a5 == 1) && a16 == 1) && a3 == 0) && a7 <= 0) && !(a11 == 1)) && a26 == a7)) || (((((a5 == 1 && a26 == 1) && a3 == 0) && a11 == 0) && a6 == 1) && !(a7 == 1))) || (((((a27 == 1 && a5 == 1) && a26 == 1) && a11 == 0) && a6 == 1) && !(a7 == 1))) || (((((((a5 == 1 && a27 == 1) && a12 <= 0) && (a11 == 1 || a8 == 1)) && 1 <= a3) && a6 == 1) && a3 <= 1) && a26 == a6)) || (((a5 == 1 && 1 <= a3) && a16 == 1) && (a26 == 1 || a6 == 1))) || (((((((a12 == 1 && a5 == 1) && a27 == 1) && a3 == 0) && a15 == 1) && a6 == 1) && a11 == 1) && !(a7 == 1))) || (((a5 == 1 && 1 <= a3) && (a26 == 1 || a6 == 1)) && !(a7 == 1))) || ((((a5 == 1 && (a11 == 1 || (a11 == 0 && a8 == 1))) && ((a6 == 0 && a8 == 1) || a6 == 1)) && !(a7 == 1)) && a26 == a6)) || ((((((a5 == 1 && a27 == 1) && a12 <= 0) && a3 == 0) && a11 == 1) && a6 == 1) && !(a7 == 1))) || ((((((a6 == 0 && a5 == 1) && a27 == 1) && (a11 == 1 || (a11 == 0 && a8 == 1))) && a16 == 1) && !(a12 == 1)) && a26 == a6)) || ((((((a6 == 0 && a5 == 1) && a27 == 1) && a12 <= 0) && a16 == 1) && a3 == 0) && a26 == a6)) || ((((((a6 == 0 && a12 == 1) && a5 == 1) && a27 == 1) && a26 == 1) && a11 == 0) && !(a7 == 1))) || ((((a5 == 1 && !(a12 == 1)) && a6 == 1) && !(a7 == 1)) && a26 == a6)) || ((((((a6 == 0 && a5 == 1) && a12 <= 0) && 1 <= a3) && a11 == 1) && !(a7 == 1)) && a26 == a6)) || (((((a6 == 0 && a5 == 1) && a27 == 1) && !(a12 == 1)) && !(a7 == 1)) && a26 == a6)) || ((((((a6 == 0 && a5 == 1) && a12 <= 0) && 1 <= a3) && a16 == 1) && a11 == 1) && a26 == a6) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 82.6s, OverallIterations: 22, TraceHistogramMax: 7, AutomataDifference: 29.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 81.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2731 SDtfs, 5923 SDslu, 522 SDs, 0 SdLazy, 14549 SolverSat, 4099 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5306 GetRequests, 5243 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247965occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 22.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 275140 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 2035 NumberOfFragments, 1777 HoareAnnotationTreeSize, 3 FomulaSimplifications, 397440 FormulaSimplificationTreeSizeReduction, 57.4s HoareSimplificationTime, 3 FomulaSimplificationsInter, 68172 FormulaSimplificationTreeSizeReductionInter, 24.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 8066 NumberOfCodeBlocks, 8025 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 10649 ConstructedInterpolants, 0 QuantifiedInterpolants, 6607389 SizeOfPredicates, 104 NumberOfNonLiveVariables, 5091 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 40 InterpolantComputations, 26 PerfectInterpolantSequences, 7416/7926 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...