./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label51.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_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/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 9b662101800a9cac954243c459de117719237e24 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 04:37:37,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 04:37:37,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 04:37:37,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 04:37:37,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 04:37:37,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 04:37:37,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 04:37:37,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 04:37:37,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 04:37:37,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 04:37:37,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 04:37:37,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 04:37:37,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 04:37:37,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 04:37:37,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 04:37:37,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 04:37:37,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 04:37:37,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 04:37:37,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 04:37:37,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 04:37:37,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 04:37:37,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 04:37:37,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 04:37:37,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 04:37:37,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 04:37:37,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 04:37:37,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 04:37:37,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 04:37:37,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 04:37:37,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 04:37:37,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 04:37:37,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 04:37:37,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 04:37:37,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 04:37:37,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 04:37:37,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 04:37:37,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 04:37:37,995 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 04:37:37,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 04:37:37,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 04:37:37,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 04:37:37,997 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 04:37:38,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 04:37:38,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 04:37:38,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 04:37:38,020 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 04:37:38,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 04:37:38,021 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 04:37:38,021 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 04:37:38,021 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 04:37:38,021 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 04:37:38,021 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 04:37:38,021 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 04:37:38,021 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 04:37:38,022 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 04:37:38,022 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 04:37:38,022 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 04:37:38,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 04:37:38,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 04:37:38,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 04:37:38,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 04:37:38,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 04:37:38,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 04:37:38,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 04:37:38,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 04:37:38,023 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 04:37:38,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 04:37:38,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 04:37:38,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 04:37:38,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 04:37:38,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 04:37:38,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 04:37:38,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 04:37:38,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 04:37:38,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 04:37:38,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 04:37:38,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 04:37:38,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 04:37:38,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 04:37:38,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 04:37:38,025 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 04:37:38,025 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_bef12094-67cc-44f1-80c0-6a739d524a36/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9b662101800a9cac954243c459de117719237e24 [2020-12-09 04:37:38,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 04:37:38,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 04:37:38,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 04:37:38,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 04:37:38,212 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 04:37:38,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2020-12-09 04:37:38,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/data/da80b7d5d/4c8fd9021ba8420c890003a779c9c02b/FLAGc79b78ed5 [2020-12-09 04:37:38,706 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 04:37:38,707 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2020-12-09 04:37:38,718 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/data/da80b7d5d/4c8fd9021ba8420c890003a779c9c02b/FLAGc79b78ed5 [2020-12-09 04:37:38,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/data/da80b7d5d/4c8fd9021ba8420c890003a779c9c02b [2020-12-09 04:37:38,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 04:37:38,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 04:37:38,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 04:37:38,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 04:37:38,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 04:37:38,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:37:38" (1/1) ... [2020-12-09 04:37:38,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131c38e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:38, skipping insertion in model container [2020-12-09 04:37:38,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 04:37:38" (1/1) ... [2020-12-09 04:37:38,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 04:37:38,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 04:37:39,046 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_bef12094-67cc-44f1-80c0-6a739d524a36/sv-benchmarks/c/eca-rers2012/Problem01_label51.c[18730,18743] [2020-12-09 04:37:39,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:37:39,082 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 04:37:39,153 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_bef12094-67cc-44f1-80c0-6a739d524a36/sv-benchmarks/c/eca-rers2012/Problem01_label51.c[18730,18743] [2020-12-09 04:37:39,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 04:37:39,178 INFO L208 MainTranslator]: Completed translation [2020-12-09 04:37:39,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39 WrapperNode [2020-12-09 04:37:39,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 04:37:39,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 04:37:39,179 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 04:37:39,179 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 04:37:39,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... [2020-12-09 04:37:39,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... [2020-12-09 04:37:39,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 04:37:39,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 04:37:39,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 04:37:39,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 04:37:39,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... [2020-12-09 04:37:39,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... [2020-12-09 04:37:39,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... [2020-12-09 04:37:39,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... [2020-12-09 04:37:39,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... [2020-12-09 04:37:39,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... [2020-12-09 04:37:39,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... [2020-12-09 04:37:39,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 04:37:39,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 04:37:39,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 04:37:39,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 04:37:39,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/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 04:37:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 04:37:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 04:37:39,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 04:37:39,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 04:37:40,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 04:37:40,511 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 04:37:40,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:37:40 BoogieIcfgContainer [2020-12-09 04:37:40,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 04:37:40,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 04:37:40,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 04:37:40,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 04:37:40,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 04:37:38" (1/3) ... [2020-12-09 04:37:40,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2081d7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:37:40, skipping insertion in model container [2020-12-09 04:37:40,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 04:37:39" (2/3) ... [2020-12-09 04:37:40,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2081d7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 04:37:40, skipping insertion in model container [2020-12-09 04:37:40,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:37:40" (3/3) ... [2020-12-09 04:37:40,521 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label51.c [2020-12-09 04:37:40,534 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 04:37:40,537 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 04:37:40,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 04:37:40,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 04:37:40,570 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 04:37:40,570 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 04:37:40,570 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 04:37:40,570 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 04:37:40,570 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 04:37:40,570 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 04:37:40,571 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 04:37:40,585 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 04:37:40,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 04:37:40,592 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:40,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:37:40,593 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:40,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1323235225, now seen corresponding path program 1 times [2020-12-09 04:37:40,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:40,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044826774] [2020-12-09 04:37:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:40,878 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 04:37:40,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044826774] [2020-12-09 04:37:40,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:40,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:37:40,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214862435] [2020-12-09 04:37:40,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:40,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:40,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:40,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:40,894 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 04:37:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:41,201 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 04:37:41,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:41,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 04:37:41,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:41,214 INFO L225 Difference]: With dead ends: 224 [2020-12-09 04:37:41,215 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 04:37:41,217 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 04:37:41,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 04:37:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 04:37:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 04:37:41,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-12-09 04:37:41,252 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-12-09 04:37:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:41,253 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-12-09 04:37:41,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-12-09 04:37:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-09 04:37:41,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:41,256 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 04:37:41,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 04:37:41,257 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:41,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:41,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1048387846, now seen corresponding path program 1 times [2020-12-09 04:37:41,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:41,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313721515] [2020-12-09 04:37:41,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:41,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:37:41,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313721515] [2020-12-09 04:37:41,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:41,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 04:37:41,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946860483] [2020-12-09 04:37:41,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:41,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:41,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:41,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:41,302 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-12-09 04:37:41,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:41,585 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-12-09 04:37:41,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:41,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-12-09 04:37:41,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:41,588 INFO L225 Difference]: With dead ends: 431 [2020-12-09 04:37:41,589 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 04:37:41,590 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 04:37:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 04:37:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 04:37:41,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 04:37:41,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 468 transitions. [2020-12-09 04:37:41,607 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 468 transitions. Word has length 77 [2020-12-09 04:37:41,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:41,607 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 468 transitions. [2020-12-09 04:37:41,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:41,607 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 468 transitions. [2020-12-09 04:37:41,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-09 04:37:41,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:41,609 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 04:37:41,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 04:37:41,610 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:41,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:41,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2123292518, now seen corresponding path program 1 times [2020-12-09 04:37:41,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:41,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62204333] [2020-12-09 04:37:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:41,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:41,747 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:37:41,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62204333] [2020-12-09 04:37:41,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:41,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:37:41,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489130605] [2020-12-09 04:37:41,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:37:41,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:41,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:37:41,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:37:41,749 INFO L87 Difference]: Start difference. First operand 287 states and 468 transitions. Second operand 4 states. [2020-12-09 04:37:42,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:42,103 INFO L93 Difference]: Finished difference Result 784 states and 1255 transitions. [2020-12-09 04:37:42,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:37:42,103 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-12-09 04:37:42,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:42,106 INFO L225 Difference]: With dead ends: 784 [2020-12-09 04:37:42,106 INFO L226 Difference]: Without dead ends: 429 [2020-12-09 04:37:42,108 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 04:37:42,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-12-09 04:37:42,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2020-12-09 04:37:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-12-09 04:37:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 482 transitions. [2020-12-09 04:37:42,130 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 482 transitions. Word has length 78 [2020-12-09 04:37:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:42,130 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 482 transitions. [2020-12-09 04:37:42,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:37:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 482 transitions. [2020-12-09 04:37:42,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 04:37:42,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:42,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:37:42,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 04:37:42,134 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:42,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:42,135 INFO L82 PathProgramCache]: Analyzing trace with hash -818095400, now seen corresponding path program 1 times [2020-12-09 04:37:42,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:42,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412050137] [2020-12-09 04:37:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:42,182 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 04:37:42,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412050137] [2020-12-09 04:37:42,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:42,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:37:42,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938177085] [2020-12-09 04:37:42,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:37:42,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:42,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:37:42,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:37:42,183 INFO L87 Difference]: Start difference. First operand 358 states and 482 transitions. Second operand 4 states. [2020-12-09 04:37:42,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:42,509 INFO L93 Difference]: Finished difference Result 928 states and 1284 transitions. [2020-12-09 04:37:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:37:42,509 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-12-09 04:37:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:42,512 INFO L225 Difference]: With dead ends: 928 [2020-12-09 04:37:42,512 INFO L226 Difference]: Without dead ends: 571 [2020-12-09 04:37:42,513 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 04:37:42,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-09 04:37:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-12-09 04:37:42,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 04:37:42,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 774 transitions. [2020-12-09 04:37:42,526 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 774 transitions. Word has length 86 [2020-12-09 04:37:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:42,527 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 774 transitions. [2020-12-09 04:37:42,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:37:42,527 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 774 transitions. [2020-12-09 04:37:42,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-09 04:37:42,530 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:42,530 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 04:37:42,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 04:37:42,530 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:42,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:42,531 INFO L82 PathProgramCache]: Analyzing trace with hash -969907499, now seen corresponding path program 1 times [2020-12-09 04:37:42,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:42,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002722103] [2020-12-09 04:37:42,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 04:37:42,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002722103] [2020-12-09 04:37:42,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:42,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 04:37:42,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947961617] [2020-12-09 04:37:42,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:42,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:42,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:42,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 04:37:42,568 INFO L87 Difference]: Start difference. First operand 571 states and 774 transitions. Second operand 3 states. [2020-12-09 04:37:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:42,786 INFO L93 Difference]: Finished difference Result 1496 states and 1992 transitions. [2020-12-09 04:37:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:42,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 97 [2020-12-09 04:37:42,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:42,792 INFO L225 Difference]: With dead ends: 1496 [2020-12-09 04:37:42,792 INFO L226 Difference]: Without dead ends: 926 [2020-12-09 04:37:42,794 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 04:37:42,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2020-12-09 04:37:42,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 713. [2020-12-09 04:37:42,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-12-09 04:37:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 952 transitions. [2020-12-09 04:37:42,815 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 952 transitions. Word has length 97 [2020-12-09 04:37:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:42,815 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 952 transitions. [2020-12-09 04:37:42,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 952 transitions. [2020-12-09 04:37:42,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-12-09 04:37:42,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:42,817 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:37:42,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 04:37:42,817 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:42,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:42,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1788098884, now seen corresponding path program 1 times [2020-12-09 04:37:42,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:42,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016325969] [2020-12-09 04:37:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-09 04:37:42,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016325969] [2020-12-09 04:37:42,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226064362] [2020-12-09 04:37:42,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/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 04:37:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:42,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 04:37:42,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:37:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 04:37:43,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:37:43,120 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 04:37:43,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 04:37:43,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 04:37:43,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662154789] [2020-12-09 04:37:43,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:43,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:43,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:43,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:37:43,122 INFO L87 Difference]: Start difference. First operand 713 states and 952 transitions. Second operand 3 states. [2020-12-09 04:37:43,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:43,457 INFO L93 Difference]: Finished difference Result 1922 states and 2565 transitions. [2020-12-09 04:37:43,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:43,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2020-12-09 04:37:43,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:43,464 INFO L225 Difference]: With dead ends: 1922 [2020-12-09 04:37:43,464 INFO L226 Difference]: Without dead ends: 1139 [2020-12-09 04:37:43,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 203 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 04:37:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-12-09 04:37:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1068. [2020-12-09 04:37:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2020-12-09 04:37:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1357 transitions. [2020-12-09 04:37:43,497 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1357 transitions. Word has length 103 [2020-12-09 04:37:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:43,498 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1357 transitions. [2020-12-09 04:37:43,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1357 transitions. [2020-12-09 04:37:43,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-09 04:37:43,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:43,501 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-12-09 04:37:43,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-09 04:37:43,702 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:43,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:43,703 INFO L82 PathProgramCache]: Analyzing trace with hash 295143514, now seen corresponding path program 1 times [2020-12-09 04:37:43,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:43,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268924790] [2020-12-09 04:37:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 04:37:43,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268924790] [2020-12-09 04:37:43,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 04:37:43,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 04:37:43,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302339175] [2020-12-09 04:37:43,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 04:37:43,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:43,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 04:37:43,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:37:43,753 INFO L87 Difference]: Start difference. First operand 1068 states and 1357 transitions. Second operand 4 states. [2020-12-09 04:37:44,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:44,041 INFO L93 Difference]: Finished difference Result 2490 states and 3198 transitions. [2020-12-09 04:37:44,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 04:37:44,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-12-09 04:37:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:44,047 INFO L225 Difference]: With dead ends: 2490 [2020-12-09 04:37:44,047 INFO L226 Difference]: Without dead ends: 1423 [2020-12-09 04:37:44,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 04:37:44,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2020-12-09 04:37:44,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1139. [2020-12-09 04:37:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 04:37:44,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1445 transitions. [2020-12-09 04:37:44,070 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1445 transitions. Word has length 120 [2020-12-09 04:37:44,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:44,071 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1445 transitions. [2020-12-09 04:37:44,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 04:37:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1445 transitions. [2020-12-09 04:37:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-09 04:37:44,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:44,073 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 04:37:44,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 04:37:44,073 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:44,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:44,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1829546935, now seen corresponding path program 1 times [2020-12-09 04:37:44,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:44,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838873642] [2020-12-09 04:37:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 68 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-09 04:37:44,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838873642] [2020-12-09 04:37:44,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599811818] [2020-12-09 04:37:44,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/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 04:37:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:44,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 04:37:44,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:37:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 04:37:44,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:37:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-09 04:37:44,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 04:37:44,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 04:37:44,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185880424] [2020-12-09 04:37:44,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:44,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:44,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:44,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:37:44,417 INFO L87 Difference]: Start difference. First operand 1139 states and 1445 transitions. Second operand 3 states. [2020-12-09 04:37:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:44,623 INFO L93 Difference]: Finished difference Result 2561 states and 3226 transitions. [2020-12-09 04:37:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:44,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-09 04:37:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:44,628 INFO L225 Difference]: With dead ends: 2561 [2020-12-09 04:37:44,628 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 04:37:44,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 265 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 04:37:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 04:37:44,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2020-12-09 04:37:44,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 04:37:44,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1405 transitions. [2020-12-09 04:37:44,648 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1405 transitions. Word has length 134 [2020-12-09 04:37:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:44,648 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1405 transitions. [2020-12-09 04:37:44,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1405 transitions. [2020-12-09 04:37:44,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-09 04:37:44,650 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:44,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-09 04:37:44,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:37:44,851 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash -776736190, now seen corresponding path program 1 times [2020-12-09 04:37:44,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:44,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096303215] [2020-12-09 04:37:44,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:44,907 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 64 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 04:37:44,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096303215] [2020-12-09 04:37:44,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051500234] [2020-12-09 04:37:44,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/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 04:37:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:44,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 04:37:44,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:37:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 04:37:45,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:37:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-12-09 04:37:45,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 04:37:45,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 04:37:45,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831128675] [2020-12-09 04:37:45,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:45,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:45,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:45,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:37:45,173 INFO L87 Difference]: Start difference. First operand 1139 states and 1405 transitions. Second operand 3 states. [2020-12-09 04:37:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:45,352 INFO L93 Difference]: Finished difference Result 2348 states and 2915 transitions. [2020-12-09 04:37:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:45,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-09 04:37:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:45,358 INFO L225 Difference]: With dead ends: 2348 [2020-12-09 04:37:45,358 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 04:37:45,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 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 04:37:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 04:37:45,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 926. [2020-12-09 04:37:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2020-12-09 04:37:45,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1097 transitions. [2020-12-09 04:37:45,376 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1097 transitions. Word has length 134 [2020-12-09 04:37:45,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:45,376 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1097 transitions. [2020-12-09 04:37:45,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:45,376 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1097 transitions. [2020-12-09 04:37:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-09 04:37:45,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 04:37:45,379 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-09 04:37:45,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:37:45,579 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 04:37:45,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 04:37:45,580 INFO L82 PathProgramCache]: Analyzing trace with hash 888443785, now seen corresponding path program 1 times [2020-12-09 04:37:45,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 04:37:45,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427471969] [2020-12-09 04:37:45,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 04:37:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-12-09 04:37:45,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427471969] [2020-12-09 04:37:45,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949553775] [2020-12-09 04:37:45,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/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 04:37:45,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 04:37:45,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 04:37:45,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 04:37:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-09 04:37:45,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 04:37:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-12-09 04:37:45,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 04:37:45,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 04:37:45,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520696766] [2020-12-09 04:37:45,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 04:37:45,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 04:37:45,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 04:37:45,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 04:37:45,936 INFO L87 Difference]: Start difference. First operand 926 states and 1097 transitions. Second operand 3 states. [2020-12-09 04:37:46,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 04:37:46,111 INFO L93 Difference]: Finished difference Result 1920 states and 2295 transitions. [2020-12-09 04:37:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 04:37:46,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-12-09 04:37:46,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 04:37:46,112 INFO L225 Difference]: With dead ends: 1920 [2020-12-09 04:37:46,112 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 04:37:46,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 359 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 04:37:46,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 04:37:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 04:37:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 04:37:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 04:37:46,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-12-09 04:37:46,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 04:37:46,114 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 04:37:46,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 04:37:46,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 04:37:46,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 04:37:46,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 04:37:46,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 04:37:46,536 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L504(line 504) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 04:37:46,537 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 04:37:46,538 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 04:37:46,539 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 04:37:46,539 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 04:37:46,539 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 04:37:46,539 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 04:37:46,539 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 04:37:46,539 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 04:37:46,540 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse3 (<= ~a16~0 5)) (.cse1 (<= 15 ~a8~0)) (.cse4 (<= ~a20~0 0)) (.cse2 (= ~a7~0 1)) (.cse0 (= ~a20~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and (= ~a21~0 1) (= ~a12~0 8) .cse0 (= ~a17~0 1)) (and .cse3 .cse4) (and (not .cse2) .cse1 .cse4) (and (<= ~a16~0 4) .cse0) (and .cse2 .cse0))) [2020-12-09 04:37:46,540 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 04:37:46,540 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 04:37:46,540 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 04:37:46,540 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 04:37:46,540 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 04:37:46,540 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 04:37:46,540 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 04:37:46,540 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 04:37:46,540 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 04:37:46,541 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 04:37:46,541 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 04:37:46,541 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 04:37:46,541 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 04:37:46,541 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 04:37:46,541 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 04:37:46,541 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 04:37:46,541 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 04:37:46,541 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 04:37:46,541 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 04:37:46,542 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 04:37:46,542 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 04:37:46,542 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 04:37:46,542 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 04:37:46,542 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse3 (<= ~a16~0 5)) (.cse1 (<= 15 ~a8~0)) (.cse4 (<= ~a20~0 0)) (.cse2 (= ~a7~0 1)) (.cse0 (= ~a20~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and (= ~a21~0 1) (= ~a12~0 8) .cse0 (= ~a17~0 1)) (and .cse3 .cse4) (and (not .cse2) .cse1 .cse4) (and (<= ~a16~0 4) .cse0) (and .cse2 .cse0))) [2020-12-09 04:37:46,542 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 04:37:46,542 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 504) no Hoare annotation was computed. [2020-12-09 04:37:46,542 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 04:37:46,542 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 04:37:46,543 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 04:37:46,543 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 04:37:46,543 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 04:37:46,543 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 04:37:46,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 04:37:46 BoogieIcfgContainer [2020-12-09 04:37:46,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 04:37:46,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 04:37:46,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 04:37:46,558 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 04:37:46,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 04:37:40" (3/4) ... [2020-12-09 04:37:46,562 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 04:37:46,582 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 04:37:46,583 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-12-09 04:37:46,585 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 04:37:46,586 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 04:37:46,685 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bef12094-67cc-44f1-80c0-6a739d524a36/bin/utaipan/witness.graphml [2020-12-09 04:37:46,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 04:37:46,687 INFO L168 Benchmark]: Toolchain (without parser) took 7952.97 ms. Allocated memory was 123.7 MB in the beginning and 274.7 MB in the end (delta: 151.0 MB). Free memory was 83.7 MB in the beginning and 116.5 MB in the end (delta: -32.8 MB). Peak memory consumption was 117.7 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:46,687 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 123.7 MB. Free memory is still 102.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 04:37:46,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.50 ms. Allocated memory is still 123.7 MB. Free memory was 83.5 MB in the beginning and 81.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:46,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.61 ms. Allocated memory is still 123.7 MB. Free memory was 81.7 MB in the beginning and 76.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:46,688 INFO L168 Benchmark]: Boogie Preprocessor took 50.07 ms. Allocated memory is still 123.7 MB. Free memory was 76.1 MB in the beginning and 71.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:46,688 INFO L168 Benchmark]: RCFGBuilder took 1210.86 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 71.3 MB in the beginning and 96.6 MB in the end (delta: -25.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:46,688 INFO L168 Benchmark]: TraceAbstraction took 6042.15 ms. Allocated memory was 148.9 MB in the beginning and 274.7 MB in the end (delta: 125.8 MB). Free memory was 96.6 MB in the beginning and 131.2 MB in the end (delta: -34.6 MB). Peak memory consumption was 91.2 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:46,689 INFO L168 Benchmark]: Witness Printer took 127.42 ms. Allocated memory is still 274.7 MB. Free memory was 131.2 MB in the beginning and 116.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 04:37:46,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 123.7 MB. Free memory is still 102.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.50 ms. Allocated memory is still 123.7 MB. Free memory was 83.5 MB in the beginning and 81.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.61 ms. Allocated memory is still 123.7 MB. Free memory was 81.7 MB in the beginning and 76.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.07 ms. Allocated memory is still 123.7 MB. Free memory was 76.1 MB in the beginning and 71.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1210.86 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 71.3 MB in the beginning and 96.6 MB in the end (delta: -25.3 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6042.15 ms. Allocated memory was 148.9 MB in the beginning and 274.7 MB in the end (delta: 125.8 MB). Free memory was 96.6 MB in the beginning and 131.2 MB in the end (delta: -34.6 MB). Peak memory consumption was 91.2 MB. Max. memory is 16.1 GB. * Witness Printer took 127.42 ms. Allocated memory is still 274.7 MB. Free memory was 131.2 MB in the beginning and 116.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 504]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((a20 == 1 && 15 <= a8) || (a7 == 1 && a16 <= 5)) || (((a21 == 1 && a12 == 8) && a20 == 1) && a17 == 1)) || (a16 <= 5 && a20 <= 0)) || ((!(a7 == 1) && 15 <= a8) && a20 <= 0)) || (a16 <= 4 && a20 == 1)) || (a7 == 1 && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a20 == 1 && 15 <= a8) || (a7 == 1 && a16 <= 5)) || (((a21 == 1 && a12 == 8) && a20 == 1) && a17 == 1)) || (a16 <= 5 && a20 <= 0)) || ((!(a7 == 1) && 15 <= a8) && a20 <= 0)) || (a16 <= 4 && a20 == 1)) || (a7 == 1 && a20 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.7s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 604 SDtfs, 697 SDslu, 47 SDs, 0 SdLazy, 2271 SolverSat, 547 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1125 GetRequests, 1101 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 1136 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 121 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1682 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1633 NumberOfCodeBlocks, 1633 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2167 ConstructedInterpolants, 0 QuantifiedInterpolants, 700675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1439 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 1434/1446 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...