./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label27.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_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c -s /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/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 dcb309f6feccb6bb3140aa826f6766a325e42843 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:17:40,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:17:40,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:17:40,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:17:40,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:17:40,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:17:40,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:17:40,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:17:40,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:17:40,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:17:40,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:17:40,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:17:40,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:17:40,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:17:40,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:17:40,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:17:40,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:17:40,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:17:40,352 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:17:40,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:17:40,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:17:40,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:17:40,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:17:40,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:17:40,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:17:40,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:17:40,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:17:40,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:17:40,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:17:40,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:17:40,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:17:40,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:17:40,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:17:40,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:17:40,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:17:40,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:17:40,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:17:40,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:17:40,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:17:40,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:17:40,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:17:40,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 17:17:40,388 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:17:40,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:17:40,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:17:40,389 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:17:40,389 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:17:40,389 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:17:40,389 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:17:40,389 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:17:40,389 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:17:40,389 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:17:40,389 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:17:40,390 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:17:40,390 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:17:40,390 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:17:40,390 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:17:40,390 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:17:40,391 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:17:40,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:17:40,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:17:40,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:17:40,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:17:40,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:17:40,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:17:40,391 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:17:40,391 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:17:40,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:17:40,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:17:40,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:17:40,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:17:40,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:17:40,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:17:40,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:17:40,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:17:40,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:17:40,393 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:17:40,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:17:40,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:17:40,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:17:40,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:17:40,393 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_17cae514-1e4f-425c-9598-c0b3dc9947d8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcb309f6feccb6bb3140aa826f6766a325e42843 [2020-12-09 17:17:40,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:17:40,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:17:40,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:17:40,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:17:40,620 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:17:40,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2020-12-09 17:17:40,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/data/d9741135c/b351bf0b829b4a48b45b83d5afb006b1/FLAG28436769f [2020-12-09 17:17:41,134 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:17:41,134 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/sv-benchmarks/c/eca-rers2012/Problem01_label27.c [2020-12-09 17:17:41,145 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/data/d9741135c/b351bf0b829b4a48b45b83d5afb006b1/FLAG28436769f [2020-12-09 17:17:41,157 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/data/d9741135c/b351bf0b829b4a48b45b83d5afb006b1 [2020-12-09 17:17:41,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:17:41,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:17:41,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:17:41,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:17:41,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:17:41,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6493fea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41, skipping insertion in model container [2020-12-09 17:17:41,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,172 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:17:41,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:17:41,429 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_17cae514-1e4f-425c-9598-c0b3dc9947d8/sv-benchmarks/c/eca-rers2012/Problem01_label27.c[16500,16513] [2020-12-09 17:17:41,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:17:41,468 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:17:41,516 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_17cae514-1e4f-425c-9598-c0b3dc9947d8/sv-benchmarks/c/eca-rers2012/Problem01_label27.c[16500,16513] [2020-12-09 17:17:41,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:17:41,539 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:17:41,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41 WrapperNode [2020-12-09 17:17:41,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:17:41,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:17:41,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:17:41,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:17:41,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:17:41,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:17:41,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:17:41,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:17:41,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... [2020-12-09 17:17:41,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:17:41,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:17:41,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:17:41,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:17:41,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/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 17:17:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 17:17:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:17:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:17:41,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:17:42,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:17:42,934 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 17:17:42,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:17:42 BoogieIcfgContainer [2020-12-09 17:17:42,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:17:42,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:17:42,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:17:42,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:17:42,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:17:41" (1/3) ... [2020-12-09 17:17:42,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50aa1944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:17:42, skipping insertion in model container [2020-12-09 17:17:42,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:41" (2/3) ... [2020-12-09 17:17:42,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50aa1944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:17:42, skipping insertion in model container [2020-12-09 17:17:42,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:17:42" (3/3) ... [2020-12-09 17:17:42,945 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label27.c [2020-12-09 17:17:42,958 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:17:42,961 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 17:17:42,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 17:17:42,992 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:17:42,993 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:17:42,993 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:17:42,993 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:17:42,993 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:17:42,993 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:17:42,993 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:17:42,993 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:17:43,003 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-12-09 17:17:43,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-09 17:17:43,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:43,009 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 17:17:43,009 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:43,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:43,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1806915160, now seen corresponding path program 1 times [2020-12-09 17:17:43,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:43,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58017600] [2020-12-09 17:17:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:43,297 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 17:17:43,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58017600] [2020-12-09 17:17:43,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:43,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:17:43,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005240365] [2020-12-09 17:17:43,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:43,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:43,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:43,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:43,312 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-12-09 17:17:43,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:43,641 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2020-12-09 17:17:43,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:43,643 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2020-12-09 17:17:43,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:43,652 INFO L225 Difference]: With dead ends: 224 [2020-12-09 17:17:43,652 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 17:17:43,655 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 17:17:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 17:17:43,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-12-09 17:17:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 17:17:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2020-12-09 17:17:43,704 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2020-12-09 17:17:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:43,704 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2020-12-09 17:17:43,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2020-12-09 17:17:43,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-09 17:17:43,708 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:43,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:43,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 17:17:43,709 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:43,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:43,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1694593086, now seen corresponding path program 1 times [2020-12-09 17:17:43,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:43,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521982094] [2020-12-09 17:17:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:17:43,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521982094] [2020-12-09 17:17:43,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:43,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:17:43,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110062105] [2020-12-09 17:17:43,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:43,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:43,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:43,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:43,774 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2020-12-09 17:17:44,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:44,031 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2020-12-09 17:17:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:44,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-12-09 17:17:44,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:44,034 INFO L225 Difference]: With dead ends: 431 [2020-12-09 17:17:44,034 INFO L226 Difference]: Without dead ends: 287 [2020-12-09 17:17:44,035 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 17:17:44,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-12-09 17:17:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2020-12-09 17:17:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-12-09 17:17:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2020-12-09 17:17:44,049 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 76 [2020-12-09 17:17:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:44,049 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2020-12-09 17:17:44,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2020-12-09 17:17:44,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-09 17:17:44,051 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:44,052 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-12-09 17:17:44,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 17:17:44,052 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:44,052 INFO L82 PathProgramCache]: Analyzing trace with hash -202240063, now seen corresponding path program 1 times [2020-12-09 17:17:44,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:44,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430882669] [2020-12-09 17:17:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 17:17:44,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430882669] [2020-12-09 17:17:44,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:44,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:17:44,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234054654] [2020-12-09 17:17:44,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:44,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:44,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:44,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:44,090 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand 3 states. [2020-12-09 17:17:44,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:44,318 INFO L93 Difference]: Finished difference Result 857 states and 1434 transitions. [2020-12-09 17:17:44,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:44,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-09 17:17:44,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:44,321 INFO L225 Difference]: With dead ends: 857 [2020-12-09 17:17:44,321 INFO L226 Difference]: Without dead ends: 571 [2020-12-09 17:17:44,323 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 17:17:44,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-12-09 17:17:44,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2020-12-09 17:17:44,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-12-09 17:17:44,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 884 transitions. [2020-12-09 17:17:44,352 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 884 transitions. Word has length 86 [2020-12-09 17:17:44,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:44,352 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 884 transitions. [2020-12-09 17:17:44,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:44,352 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 884 transitions. [2020-12-09 17:17:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-09 17:17:44,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:44,354 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:44,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 17:17:44,355 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:44,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:44,355 INFO L82 PathProgramCache]: Analyzing trace with hash 289047179, now seen corresponding path program 1 times [2020-12-09 17:17:44,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:44,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981328805] [2020-12-09 17:17:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 17:17:44,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981328805] [2020-12-09 17:17:44,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:44,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:17:44,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433908366] [2020-12-09 17:17:44,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:44,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:44,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:44,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:44,400 INFO L87 Difference]: Start difference. First operand 571 states and 884 transitions. Second operand 3 states. [2020-12-09 17:17:44,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:44,679 INFO L93 Difference]: Finished difference Result 1567 states and 2441 transitions. [2020-12-09 17:17:44,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:44,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-09 17:17:44,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:44,683 INFO L225 Difference]: With dead ends: 1567 [2020-12-09 17:17:44,683 INFO L226 Difference]: Without dead ends: 997 [2020-12-09 17:17:44,684 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 17:17:44,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2020-12-09 17:17:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 642. [2020-12-09 17:17:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-12-09 17:17:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2020-12-09 17:17:44,699 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 91 [2020-12-09 17:17:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:44,699 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2020-12-09 17:17:44,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:44,699 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2020-12-09 17:17:44,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-09 17:17:44,700 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:44,700 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:44,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 17:17:44,701 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:44,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:44,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1324169363, now seen corresponding path program 1 times [2020-12-09 17:17:44,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:44,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430816410] [2020-12-09 17:17:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:44,738 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:17:44,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430816410] [2020-12-09 17:17:44,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:44,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:17:44,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479950817] [2020-12-09 17:17:44,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:44,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:44,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:44,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:44,740 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand 3 states. [2020-12-09 17:17:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:45,019 INFO L93 Difference]: Finished difference Result 1922 states and 2844 transitions. [2020-12-09 17:17:45,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:45,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2020-12-09 17:17:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:45,027 INFO L225 Difference]: With dead ends: 1922 [2020-12-09 17:17:45,027 INFO L226 Difference]: Without dead ends: 1281 [2020-12-09 17:17:45,028 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 17:17:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-12-09 17:17:45,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2020-12-09 17:17:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 17:17:45,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1608 transitions. [2020-12-09 17:17:45,058 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1608 transitions. Word has length 94 [2020-12-09 17:17:45,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:45,058 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1608 transitions. [2020-12-09 17:17:45,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1608 transitions. [2020-12-09 17:17:45,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 17:17:45,061 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:45,061 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:45,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 17:17:45,062 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:45,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:45,062 INFO L82 PathProgramCache]: Analyzing trace with hash -720013175, now seen corresponding path program 1 times [2020-12-09 17:17:45,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:45,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664023838] [2020-12-09 17:17:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 17:17:45,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664023838] [2020-12-09 17:17:45,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:45,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:17:45,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879372383] [2020-12-09 17:17:45,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:45,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:45,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:45,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:45,115 INFO L87 Difference]: Start difference. First operand 1139 states and 1608 transitions. Second operand 3 states. [2020-12-09 17:17:45,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:45,433 INFO L93 Difference]: Finished difference Result 2419 states and 3375 transitions. [2020-12-09 17:17:45,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:45,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-12-09 17:17:45,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:45,440 INFO L225 Difference]: With dead ends: 2419 [2020-12-09 17:17:45,440 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 17:17:45,442 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 17:17:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 17:17:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2020-12-09 17:17:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2020-12-09 17:17:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1473 transitions. [2020-12-09 17:17:45,471 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1473 transitions. Word has length 98 [2020-12-09 17:17:45,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:45,471 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1473 transitions. [2020-12-09 17:17:45,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:45,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1473 transitions. [2020-12-09 17:17:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-12-09 17:17:45,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:45,474 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:45,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 17:17:45,474 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:45,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1815697455, now seen corresponding path program 1 times [2020-12-09 17:17:45,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:45,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876056190] [2020-12-09 17:17:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-12-09 17:17:45,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876056190] [2020-12-09 17:17:45,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:45,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:17:45,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295913498] [2020-12-09 17:17:45,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:45,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:45,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:45,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:45,523 INFO L87 Difference]: Start difference. First operand 1210 states and 1473 transitions. Second operand 3 states. [2020-12-09 17:17:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:45,745 INFO L93 Difference]: Finished difference Result 2348 states and 2867 transitions. [2020-12-09 17:17:45,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:45,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-12-09 17:17:45,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:45,752 INFO L225 Difference]: With dead ends: 2348 [2020-12-09 17:17:45,752 INFO L226 Difference]: Without dead ends: 1210 [2020-12-09 17:17:45,754 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 17:17:45,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-12-09 17:17:45,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1139. [2020-12-09 17:17:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2020-12-09 17:17:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1353 transitions. [2020-12-09 17:17:45,780 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1353 transitions. Word has length 102 [2020-12-09 17:17:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:45,780 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1353 transitions. [2020-12-09 17:17:45,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1353 transitions. [2020-12-09 17:17:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-09 17:17:45,782 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:45,782 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-09 17:17:45,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 17:17:45,782 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:45,782 INFO L82 PathProgramCache]: Analyzing trace with hash -785770443, now seen corresponding path program 1 times [2020-12-09 17:17:45,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:45,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388107482] [2020-12-09 17:17:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-09 17:17:45,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388107482] [2020-12-09 17:17:45,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:45,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:17:45,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695846456] [2020-12-09 17:17:45,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:45,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:45,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:45,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:45,820 INFO L87 Difference]: Start difference. First operand 1139 states and 1353 transitions. Second operand 3 states. [2020-12-09 17:17:46,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:46,039 INFO L93 Difference]: Finished difference Result 2703 states and 3256 transitions. [2020-12-09 17:17:46,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:46,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-09 17:17:46,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:46,045 INFO L225 Difference]: With dead ends: 2703 [2020-12-09 17:17:46,045 INFO L226 Difference]: Without dead ends: 1636 [2020-12-09 17:17:46,046 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 17:17:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-12-09 17:17:46,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1423. [2020-12-09 17:17:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2020-12-09 17:17:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1727 transitions. [2020-12-09 17:17:46,082 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1727 transitions. Word has length 111 [2020-12-09 17:17:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:46,083 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1727 transitions. [2020-12-09 17:17:46,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1727 transitions. [2020-12-09 17:17:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-09 17:17:46,085 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:46,085 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:17:46,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 17:17:46,085 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:46,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:46,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1033354769, now seen corresponding path program 1 times [2020-12-09 17:17:46,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:46,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429926455] [2020-12-09 17:17:46,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-09 17:17:46,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429926455] [2020-12-09 17:17:46,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:46,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:17:46,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259197700] [2020-12-09 17:17:46,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:46,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:46,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:46,133 INFO L87 Difference]: Start difference. First operand 1423 states and 1727 transitions. Second operand 3 states. [2020-12-09 17:17:46,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:46,324 INFO L93 Difference]: Finished difference Result 2987 states and 3629 transitions. [2020-12-09 17:17:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:46,325 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-09 17:17:46,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:46,331 INFO L225 Difference]: With dead ends: 2987 [2020-12-09 17:17:46,331 INFO L226 Difference]: Without dead ends: 1565 [2020-12-09 17:17:46,332 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 17:17:46,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2020-12-09 17:17:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2020-12-09 17:17:46,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-12-09 17:17:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1883 transitions. [2020-12-09 17:17:46,357 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1883 transitions. Word has length 127 [2020-12-09 17:17:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:46,357 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1883 transitions. [2020-12-09 17:17:46,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1883 transitions. [2020-12-09 17:17:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-09 17:17:46,361 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:46,361 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:17:46,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 17:17:46,362 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:46,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:46,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1365882791, now seen corresponding path program 1 times [2020-12-09 17:17:46,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:46,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893522648] [2020-12-09 17:17:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-12-09 17:17:46,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893522648] [2020-12-09 17:17:46,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:46,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:17:46,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228110510] [2020-12-09 17:17:46,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:17:46,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:46,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:17:46,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:17:46,431 INFO L87 Difference]: Start difference. First operand 1565 states and 1883 transitions. Second operand 4 states. [2020-12-09 17:17:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:46,727 INFO L93 Difference]: Finished difference Result 3129 states and 3777 transitions. [2020-12-09 17:17:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:17:46,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-09 17:17:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:46,733 INFO L225 Difference]: With dead ends: 3129 [2020-12-09 17:17:46,733 INFO L226 Difference]: Without dead ends: 1636 [2020-12-09 17:17:46,734 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 17:17:46,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-12-09 17:17:46,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1565. [2020-12-09 17:17:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-12-09 17:17:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1863 transitions. [2020-12-09 17:17:46,762 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1863 transitions. Word has length 131 [2020-12-09 17:17:46,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:46,762 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1863 transitions. [2020-12-09 17:17:46,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:17:46,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1863 transitions. [2020-12-09 17:17:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-09 17:17:46,765 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:46,765 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:46,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 17:17:46,766 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:46,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:46,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1083768702, now seen corresponding path program 1 times [2020-12-09 17:17:46,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:46,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360795673] [2020-12-09 17:17:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-09 17:17:46,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360795673] [2020-12-09 17:17:46,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331468945] [2020-12-09 17:17:46,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/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 17:17:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:46,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 17:17:46,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:17:47,058 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-09 17:17:47,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:17:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-09 17:17:47,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:17:47,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2020-12-09 17:17:47,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245251319] [2020-12-09 17:17:47,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:47,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:47,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:47,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:17:47,149 INFO L87 Difference]: Start difference. First operand 1565 states and 1863 transitions. Second operand 3 states. [2020-12-09 17:17:47,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:47,353 INFO L93 Difference]: Finished difference Result 3129 states and 3737 transitions. [2020-12-09 17:17:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:47,353 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-09 17:17:47,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:47,359 INFO L225 Difference]: With dead ends: 3129 [2020-12-09 17:17:47,359 INFO L226 Difference]: Without dead ends: 1636 [2020-12-09 17:17:47,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:17:47,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-12-09 17:17:47,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2020-12-09 17:17:47,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-12-09 17:17:47,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1887 transitions. [2020-12-09 17:17:47,382 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1887 transitions. Word has length 148 [2020-12-09 17:17:47,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:47,382 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1887 transitions. [2020-12-09 17:17:47,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:47,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1887 transitions. [2020-12-09 17:17:47,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-09 17:17:47,384 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:47,385 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 17:17:47,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-09 17:17:47,585 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:47,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1216279002, now seen corresponding path program 1 times [2020-12-09 17:17:47,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:47,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651941003] [2020-12-09 17:17:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:47,691 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-09 17:17:47,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651941003] [2020-12-09 17:17:47,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:47,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:17:47,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329065659] [2020-12-09 17:17:47,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:17:47,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:47,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:17:47,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:17:47,693 INFO L87 Difference]: Start difference. First operand 1636 states and 1887 transitions. Second operand 4 states. [2020-12-09 17:17:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:48,002 INFO L93 Difference]: Finished difference Result 3413 states and 3939 transitions. [2020-12-09 17:17:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:17:48,002 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-12-09 17:17:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:48,010 INFO L225 Difference]: With dead ends: 3413 [2020-12-09 17:17:48,010 INFO L226 Difference]: Without dead ends: 1707 [2020-12-09 17:17:48,011 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 17:17:48,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-12-09 17:17:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1565. [2020-12-09 17:17:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-12-09 17:17:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1774 transitions. [2020-12-09 17:17:48,045 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1774 transitions. Word has length 151 [2020-12-09 17:17:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:48,045 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1774 transitions. [2020-12-09 17:17:48,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:17:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1774 transitions. [2020-12-09 17:17:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-12-09 17:17:48,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:48,049 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-12-09 17:17:48,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 17:17:48,049 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:48,050 INFO L82 PathProgramCache]: Analyzing trace with hash 2109679940, now seen corresponding path program 1 times [2020-12-09 17:17:48,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:48,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793965900] [2020-12-09 17:17:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:48,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-09 17:17:48,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793965900] [2020-12-09 17:17:48,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:48,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:17:48,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055272780] [2020-12-09 17:17:48,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:48,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:48,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:48,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:48,135 INFO L87 Difference]: Start difference. First operand 1565 states and 1774 transitions. Second operand 3 states. [2020-12-09 17:17:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:48,343 INFO L93 Difference]: Finished difference Result 3200 states and 3632 transitions. [2020-12-09 17:17:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:48,343 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2020-12-09 17:17:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:48,349 INFO L225 Difference]: With dead ends: 3200 [2020-12-09 17:17:48,349 INFO L226 Difference]: Without dead ends: 1707 [2020-12-09 17:17:48,350 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 17:17:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2020-12-09 17:17:48,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1636. [2020-12-09 17:17:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-12-09 17:17:48,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1807 transitions. [2020-12-09 17:17:48,379 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1807 transitions. Word has length 194 [2020-12-09 17:17:48,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:48,380 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1807 transitions. [2020-12-09 17:17:48,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:48,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1807 transitions. [2020-12-09 17:17:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-12-09 17:17:48,383 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:48,383 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:48,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 17:17:48,384 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:48,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:48,384 INFO L82 PathProgramCache]: Analyzing trace with hash 236740685, now seen corresponding path program 1 times [2020-12-09 17:17:48,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:48,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8313249] [2020-12-09 17:17:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 143 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-09 17:17:48,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8313249] [2020-12-09 17:17:48,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296505107] [2020-12-09 17:17:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/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 17:17:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:48,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 17:17:48,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:17:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 17:17:48,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:17:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2020-12-09 17:17:48,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:17:48,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2020-12-09 17:17:48,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034574406] [2020-12-09 17:17:48,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:48,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:48,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:17:48,984 INFO L87 Difference]: Start difference. First operand 1636 states and 1807 transitions. Second operand 3 states. [2020-12-09 17:17:49,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:49,174 INFO L93 Difference]: Finished difference Result 3626 states and 4027 transitions. [2020-12-09 17:17:49,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:49,174 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2020-12-09 17:17:49,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:49,181 INFO L225 Difference]: With dead ends: 3626 [2020-12-09 17:17:49,182 INFO L226 Difference]: Without dead ends: 1636 [2020-12-09 17:17:49,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:17:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2020-12-09 17:17:49,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1636. [2020-12-09 17:17:49,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2020-12-09 17:17:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1788 transitions. [2020-12-09 17:17:49,211 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1788 transitions. Word has length 216 [2020-12-09 17:17:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:49,211 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1788 transitions. [2020-12-09 17:17:49,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1788 transitions. [2020-12-09 17:17:49,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-12-09 17:17:49,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:49,217 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:49,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-09 17:17:49,418 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:49,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:49,420 INFO L82 PathProgramCache]: Analyzing trace with hash -706791699, now seen corresponding path program 1 times [2020-12-09 17:17:49,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:49,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769650491] [2020-12-09 17:17:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-12-09 17:17:49,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769650491] [2020-12-09 17:17:49,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:49,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:17:49,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409397561] [2020-12-09 17:17:49,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:17:49,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:17:49,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:17:49,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:17:49,560 INFO L87 Difference]: Start difference. First operand 1636 states and 1788 transitions. Second operand 3 states. [2020-12-09 17:17:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:49,742 INFO L93 Difference]: Finished difference Result 2701 states and 2967 transitions. [2020-12-09 17:17:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:17:49,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2020-12-09 17:17:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:49,743 INFO L225 Difference]: With dead ends: 2701 [2020-12-09 17:17:49,743 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 17:17:49,745 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 17:17:49,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 17:17:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 17:17:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 17:17:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 17:17:49,746 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 245 [2020-12-09 17:17:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:49,746 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 17:17:49,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:17:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 17:17:49,746 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 17:17:49,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 17:17:49,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 17:17:49,959 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-09 17:17:50,085 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-12-09 17:17:50,088 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2020-12-09 17:17:50,088 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2020-12-09 17:17:50,088 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2020-12-09 17:17:50,088 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2020-12-09 17:17:50,088 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2020-12-09 17:17:50,088 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2020-12-09 17:17:50,089 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2020-12-09 17:17:50,090 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2020-12-09 17:17:50,091 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2020-12-09 17:17:50,091 INFO L262 CegarLoopResult]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2020-12-09 17:17:50,091 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 17:17:50,091 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2020-12-09 17:17:50,091 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2020-12-09 17:17:50,091 INFO L262 CegarLoopResult]: For program point L450(line 450) no Hoare annotation was computed. [2020-12-09 17:17:50,091 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2020-12-09 17:17:50,091 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse1 (= ~a16~0 6)) (.cse7 (<= ~a8~0 13)) (.cse2 (<= ~a7~0 0)) (.cse5 (= ~a20~0 1)) (.cse4 (<= ~a8~0 14)) (.cse0 (= ~a21~0 1)) (.cse6 (= ~a7~0 1)) (.cse8 (<= ~a16~0 5)) (.cse3 (<= ~a20~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5) (and .cse6 .cse5 .cse7 (= ~a17~0 1)) (and .cse0 .cse8 .cse2 .cse3) (and .cse6 (or (and .cse1 .cse7) (and (<= ~a16~0 4) .cse7))) (and .cse0 .cse2 .cse5) (and .cse4 .cse0 .cse8 .cse3) (and .cse0 .cse6 .cse8 .cse3))) [2020-12-09 17:17:50,091 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2020-12-09 17:17:50,092 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse1 (= ~a16~0 6)) (.cse7 (<= ~a8~0 13)) (.cse2 (<= ~a7~0 0)) (.cse5 (= ~a20~0 1)) (.cse4 (<= ~a8~0 14)) (.cse0 (= ~a21~0 1)) (.cse6 (= ~a7~0 1)) (.cse8 (<= ~a16~0 5)) (.cse3 (<= ~a20~0 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse0 .cse5) (and .cse6 .cse5 .cse7 (= ~a17~0 1)) (and .cse0 .cse8 .cse2 .cse3) (and .cse6 (or (and .cse1 .cse7) (and (<= ~a16~0 4) .cse7))) (and .cse0 .cse2 .cse5) (and .cse4 .cse0 .cse8 .cse3) (and .cse0 .cse6 .cse8 .cse3))) [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 450) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2020-12-09 17:17:50,093 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2020-12-09 17:17:50,094 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2020-12-09 17:17:50,094 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2020-12-09 17:17:50,094 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2020-12-09 17:17:50,094 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2020-12-09 17:17:50,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:17:50 BoogieIcfgContainer [2020-12-09 17:17:50,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:17:50,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:17:50,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:17:50,112 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:17:50,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:17:42" (3/4) ... [2020-12-09 17:17:50,116 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 17:17:50,134 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2020-12-09 17:17:50,136 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 17:17:50,138 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 17:17:50,139 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 17:17:50,246 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_17cae514-1e4f-425c-9598-c0b3dc9947d8/bin/utaipan/witness.graphml [2020-12-09 17:17:50,246 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:17:50,247 INFO L168 Benchmark]: Toolchain (without parser) took 9086.36 ms. Allocated memory was 100.7 MB in the beginning and 270.5 MB in the end (delta: 169.9 MB). Free memory was 58.1 MB in the beginning and 162.2 MB in the end (delta: -104.1 MB). Peak memory consumption was 67.9 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:50,247 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 100.7 MB. Free memory is still 77.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:17:50,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.87 ms. Allocated memory is still 100.7 MB. Free memory was 57.9 MB in the beginning and 64.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:50,248 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.55 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 58.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:50,248 INFO L168 Benchmark]: Boogie Preprocessor took 46.05 ms. Allocated memory is still 100.7 MB. Free memory was 58.1 MB in the beginning and 53.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:50,248 INFO L168 Benchmark]: RCFGBuilder took 1295.41 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 53.9 MB in the beginning and 64.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:50,248 INFO L168 Benchmark]: TraceAbstraction took 7173.36 ms. Allocated memory was 127.9 MB in the beginning and 270.5 MB in the end (delta: 142.6 MB). Free memory was 64.2 MB in the beginning and 176.9 MB in the end (delta: -112.7 MB). Peak memory consumption was 128.4 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:50,249 INFO L168 Benchmark]: Witness Printer took 133.88 ms. Allocated memory is still 270.5 MB. Free memory was 176.9 MB in the beginning and 162.2 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:50,250 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 100.7 MB. Free memory is still 77.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 377.87 ms. Allocated memory is still 100.7 MB. Free memory was 57.9 MB in the beginning and 64.0 MB in the end (delta: -6.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.55 ms. Allocated memory is still 100.7 MB. Free memory was 64.0 MB in the beginning and 58.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.05 ms. Allocated memory is still 100.7 MB. Free memory was 58.1 MB in the beginning and 53.9 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1295.41 ms. Allocated memory was 100.7 MB in the beginning and 127.9 MB in the end (delta: 27.3 MB). Free memory was 53.9 MB in the beginning and 64.2 MB in the end (delta: -10.3 MB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7173.36 ms. Allocated memory was 127.9 MB in the beginning and 270.5 MB in the end (delta: 142.6 MB). Free memory was 64.2 MB in the beginning and 176.9 MB in the end (delta: -112.7 MB). Peak memory consumption was 128.4 MB. Max. memory is 16.1 GB. * Witness Printer took 133.88 ms. Allocated memory is still 270.5 MB. Free memory was 176.9 MB in the beginning and 162.2 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: 450]: 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: (((((((((a21 == 1 && a16 == 6) && a7 <= 0) && a20 <= 0) || ((a8 <= 14 && a21 == 1) && a20 == 1)) || (((a7 == 1 && a20 == 1) && a8 <= 13) && a17 == 1)) || (((a21 == 1 && a16 <= 5) && a7 <= 0) && a20 <= 0)) || (a7 == 1 && ((a16 == 6 && a8 <= 13) || (a16 <= 4 && a8 <= 13)))) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (((a8 <= 14 && a21 == 1) && a16 <= 5) && a20 <= 0)) || (((a21 == 1 && a7 == 1) && a16 <= 5) && a20 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((a21 == 1 && a16 == 6) && a7 <= 0) && a20 <= 0) || ((a8 <= 14 && a21 == 1) && a20 == 1)) || (((a7 == 1 && a20 == 1) && a8 <= 13) && a17 == 1)) || (((a21 == 1 && a16 <= 5) && a7 <= 0) && a20 <= 0)) || (a7 == 1 && ((a16 == 6 && a8 <= 13) || (a16 <= 4 && a8 <= 13)))) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (((a8 <= 14 && a21 == 1) && a16 <= 5) && a20 <= 0)) || (((a21 == 1 && a7 == 1) && a16 <= 5) && a20 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.7s, OverallIterations: 15, TraceHistogramMax: 7, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 943 SDtfs, 1051 SDslu, 63 SDs, 0 SdLazy, 3107 SolverSat, 700 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 766 GetRequests, 742 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1636occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 15 MinimizatonAttempts, 1065 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 59 NumberOfFragments, 211 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2064 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 178 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 2305 NumberOfCodeBlocks, 2305 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2650 ConstructedInterpolants, 0 QuantifiedInterpolants, 1190257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 807 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 2311/2408 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...