./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label06.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_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label06.c -s /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/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 ebd8043c569a2735186138bd410041c177d4512b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:07:12,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:07:12,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:07:12,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:07:12,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:07:12,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:07:12,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:07:12,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:07:12,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:07:12,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:07:12,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:07:12,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:07:12,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:07:12,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:07:12,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:07:12,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:07:12,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:07:12,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:07:12,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:07:12,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:07:12,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:07:12,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:07:12,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:07:12,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:07:12,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:07:12,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:07:12,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:07:12,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:07:12,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:07:12,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:07:12,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:07:12,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:07:12,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:07:12,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:07:12,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:07:12,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:07:12,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:07:12,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:07:12,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:07:12,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:07:12,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:07:12,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 11:07:12,606 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:07:12,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:07:12,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:07:12,607 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:07:12,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:07:12,607 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:07:12,607 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:07:12,608 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:07:12,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:07:12,608 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:07:12,608 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:07:12,608 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:07:12,608 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:07:12,609 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:07:12,609 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:07:12,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:07:12,610 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:07:12,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:07:12,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:07:12,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:07:12,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:07:12,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:07:12,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:07:12,611 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:07:12,611 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:07:12,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:07:12,611 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:07:12,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:07:12,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:07:12,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:07:12,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:07:12,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:07:12,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:07:12,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:07:12,613 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:07:12,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:07:12,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:07:12,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:07:12,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:07:12,613 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_85174cbc-9f77-4d47-a53d-fb430e82f58c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebd8043c569a2735186138bd410041c177d4512b [2020-12-09 11:07:12,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:07:12,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:07:12,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:07:12,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:07:12,815 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:07:12,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/../../sv-benchmarks/c/eca-rers2012/Problem03_label06.c [2020-12-09 11:07:12,861 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/data/619455118/b462a6169b9e4282a3a98c010b33f929/FLAGc1b0a004b [2020-12-09 11:07:13,321 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:07:13,321 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/sv-benchmarks/c/eca-rers2012/Problem03_label06.c [2020-12-09 11:07:13,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/data/619455118/b462a6169b9e4282a3a98c010b33f929/FLAGc1b0a004b [2020-12-09 11:07:13,344 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/data/619455118/b462a6169b9e4282a3a98c010b33f929 [2020-12-09 11:07:13,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:07:13,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:07:13,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:07:13,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:07:13,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:07:13,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:13,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d0c8a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13, skipping insertion in model container [2020-12-09 11:07:13,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:13,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:07:13,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:07:13,781 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_85174cbc-9f77-4d47-a53d-fb430e82f58c/sv-benchmarks/c/eca-rers2012/Problem03_label06.c[57034,57047] [2020-12-09 11:07:13,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:07:13,812 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:07:13,972 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_85174cbc-9f77-4d47-a53d-fb430e82f58c/sv-benchmarks/c/eca-rers2012/Problem03_label06.c[57034,57047] [2020-12-09 11:07:13,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:07:13,997 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:07:13,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13 WrapperNode [2020-12-09 11:07:13,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:07:13,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:07:13,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:07:13,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:07:14,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:14,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:14,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:07:14,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:07:14,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:07:14,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:07:14,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:14,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:14,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:14,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:14,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:14,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:14,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... [2020-12-09 11:07:14,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:07:14,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:07:14,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:07:14,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:07:14,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/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 11:07:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 11:07:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:07:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:07:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:07:16,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:07:16,534 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 11:07:16,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:07:16 BoogieIcfgContainer [2020-12-09 11:07:16,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:07:16,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:07:16,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:07:16,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:07:16,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:07:13" (1/3) ... [2020-12-09 11:07:16,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81db342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:07:16, skipping insertion in model container [2020-12-09 11:07:16,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:07:13" (2/3) ... [2020-12-09 11:07:16,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81db342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:07:16, skipping insertion in model container [2020-12-09 11:07:16,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:07:16" (3/3) ... [2020-12-09 11:07:16,542 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label06.c [2020-12-09 11:07:16,551 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:07:16,554 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 11:07:16,561 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 11:07:16,581 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:07:16,581 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:07:16,581 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:07:16,581 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:07:16,582 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:07:16,582 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:07:16,582 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:07:16,582 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:07:16,595 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-12-09 11:07:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-09 11:07:16,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:16,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:07:16,607 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:16,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:16,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1467452261, now seen corresponding path program 1 times [2020-12-09 11:07:16,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:16,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413957736] [2020-12-09 11:07:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:17,025 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 11:07:17,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413957736] [2020-12-09 11:07:17,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:07:17,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:07:17,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657783105] [2020-12-09 11:07:17,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:07:17,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:17,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:07:17,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:07:17,041 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 3 states. [2020-12-09 11:07:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:17,692 INFO L93 Difference]: Finished difference Result 440 states and 860 transitions. [2020-12-09 11:07:17,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:07:17,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-09 11:07:17,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:17,704 INFO L225 Difference]: With dead ends: 440 [2020-12-09 11:07:17,704 INFO L226 Difference]: Without dead ends: 289 [2020-12-09 11:07:17,706 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 11:07:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-12-09 11:07:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2020-12-09 11:07:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-12-09 11:07:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 520 transitions. [2020-12-09 11:07:17,746 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 520 transitions. Word has length 143 [2020-12-09 11:07:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:17,747 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 520 transitions. [2020-12-09 11:07:17,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:07:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 520 transitions. [2020-12-09 11:07:17,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-09 11:07:17,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:17,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:17,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 11:07:17,750 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:17,751 INFO L82 PathProgramCache]: Analyzing trace with hash 732716861, now seen corresponding path program 1 times [2020-12-09 11:07:17,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:17,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582342851] [2020-12-09 11:07:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:17,829 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 11:07:17,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582342851] [2020-12-09 11:07:17,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:07:17,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:07:17,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386883682] [2020-12-09 11:07:17,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:07:17,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:17,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:07:17,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:07:17,832 INFO L87 Difference]: Start difference. First operand 289 states and 520 transitions. Second operand 3 states. [2020-12-09 11:07:18,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:18,417 INFO L93 Difference]: Finished difference Result 863 states and 1557 transitions. [2020-12-09 11:07:18,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:07:18,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-12-09 11:07:18,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:18,422 INFO L225 Difference]: With dead ends: 863 [2020-12-09 11:07:18,422 INFO L226 Difference]: Without dead ends: 575 [2020-12-09 11:07:18,424 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 11:07:18,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-12-09 11:07:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2020-12-09 11:07:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2020-12-09 11:07:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 960 transitions. [2020-12-09 11:07:18,456 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 960 transitions. Word has length 148 [2020-12-09 11:07:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:18,456 INFO L481 AbstractCegarLoop]: Abstraction has 575 states and 960 transitions. [2020-12-09 11:07:18,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:07:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 960 transitions. [2020-12-09 11:07:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-12-09 11:07:18,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:18,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:07:18,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 11:07:18,463 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:18,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1977879238, now seen corresponding path program 1 times [2020-12-09 11:07:18,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:18,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141874101] [2020-12-09 11:07:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:07:18,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141874101] [2020-12-09 11:07:18,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:07:18,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:07:18,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943951128] [2020-12-09 11:07:18,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:07:18,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:18,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:07:18,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:07:18,551 INFO L87 Difference]: Start difference. First operand 575 states and 960 transitions. Second operand 3 states. [2020-12-09 11:07:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:19,238 INFO L93 Difference]: Finished difference Result 1721 states and 2877 transitions. [2020-12-09 11:07:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:07:19,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2020-12-09 11:07:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:19,244 INFO L225 Difference]: With dead ends: 1721 [2020-12-09 11:07:19,245 INFO L226 Difference]: Without dead ends: 1147 [2020-12-09 11:07:19,246 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 11:07:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2020-12-09 11:07:19,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2020-12-09 11:07:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1147 states. [2020-12-09 11:07:19,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1863 transitions. [2020-12-09 11:07:19,279 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1863 transitions. Word has length 151 [2020-12-09 11:07:19,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:19,279 INFO L481 AbstractCegarLoop]: Abstraction has 1147 states and 1863 transitions. [2020-12-09 11:07:19,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:07:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1863 transitions. [2020-12-09 11:07:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-09 11:07:19,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:19,284 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:07:19,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 11:07:19,285 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:19,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:19,286 INFO L82 PathProgramCache]: Analyzing trace with hash 559035617, now seen corresponding path program 1 times [2020-12-09 11:07:19,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:19,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326723931] [2020-12-09 11:07:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 11:07:19,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326723931] [2020-12-09 11:07:19,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:07:19,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:07:19,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125710752] [2020-12-09 11:07:19,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:07:19,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:19,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:07:19,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:07:19,369 INFO L87 Difference]: Start difference. First operand 1147 states and 1863 transitions. Second operand 3 states. [2020-12-09 11:07:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:20,067 INFO L93 Difference]: Finished difference Result 2865 states and 4722 transitions. [2020-12-09 11:07:20,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:07:20,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 163 [2020-12-09 11:07:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:20,074 INFO L225 Difference]: With dead ends: 2865 [2020-12-09 11:07:20,074 INFO L226 Difference]: Without dead ends: 1719 [2020-12-09 11:07:20,075 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 11:07:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2020-12-09 11:07:20,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2020-12-09 11:07:20,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1719 states. [2020-12-09 11:07:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2681 transitions. [2020-12-09 11:07:20,105 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2681 transitions. Word has length 163 [2020-12-09 11:07:20,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:20,106 INFO L481 AbstractCegarLoop]: Abstraction has 1719 states and 2681 transitions. [2020-12-09 11:07:20,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:07:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2681 transitions. [2020-12-09 11:07:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-12-09 11:07:20,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:20,109 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:07:20,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 11:07:20,109 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:20,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2010090781, now seen corresponding path program 1 times [2020-12-09 11:07:20,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:20,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780916651] [2020-12-09 11:07:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-09 11:07:20,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780916651] [2020-12-09 11:07:20,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:07:20,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:07:20,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028465172] [2020-12-09 11:07:20,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:07:20,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:20,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:07:20,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:07:20,172 INFO L87 Difference]: Start difference. First operand 1719 states and 2681 transitions. Second operand 3 states. [2020-12-09 11:07:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:20,908 INFO L93 Difference]: Finished difference Result 5153 states and 8040 transitions. [2020-12-09 11:07:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:07:20,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2020-12-09 11:07:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:20,922 INFO L225 Difference]: With dead ends: 5153 [2020-12-09 11:07:20,922 INFO L226 Difference]: Without dead ends: 3435 [2020-12-09 11:07:20,924 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 11:07:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2020-12-09 11:07:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2020-12-09 11:07:20,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3435 states. [2020-12-09 11:07:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4932 transitions. [2020-12-09 11:07:20,978 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4932 transitions. Word has length 167 [2020-12-09 11:07:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:20,979 INFO L481 AbstractCegarLoop]: Abstraction has 3435 states and 4932 transitions. [2020-12-09 11:07:20,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:07:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4932 transitions. [2020-12-09 11:07:20,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-09 11:07:20,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:20,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:07:20,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 11:07:20,984 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:20,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:20,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1925398404, now seen corresponding path program 1 times [2020-12-09 11:07:20,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:20,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678215756] [2020-12-09 11:07:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:21,086 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:07:21,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678215756] [2020-12-09 11:07:21,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:07:21,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:07:21,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152260414] [2020-12-09 11:07:21,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:07:21,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:21,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:07:21,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:07:21,088 INFO L87 Difference]: Start difference. First operand 3435 states and 4932 transitions. Second operand 3 states. [2020-12-09 11:07:21,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:21,757 INFO L93 Difference]: Finished difference Result 8585 states and 12285 transitions. [2020-12-09 11:07:21,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:07:21,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-12-09 11:07:21,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:21,776 INFO L225 Difference]: With dead ends: 8585 [2020-12-09 11:07:21,776 INFO L226 Difference]: Without dead ends: 5151 [2020-12-09 11:07:21,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 11:07:21,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5151 states. [2020-12-09 11:07:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5151 to 5151. [2020-12-09 11:07:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5151 states. [2020-12-09 11:07:21,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5151 states to 5151 states and 7219 transitions. [2020-12-09 11:07:21,852 INFO L78 Accepts]: Start accepts. Automaton has 5151 states and 7219 transitions. Word has length 184 [2020-12-09 11:07:21,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:21,853 INFO L481 AbstractCegarLoop]: Abstraction has 5151 states and 7219 transitions. [2020-12-09 11:07:21,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:07:21,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5151 states and 7219 transitions. [2020-12-09 11:07:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-12-09 11:07:21,860 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:21,860 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:07:21,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 11:07:21,860 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:21,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:21,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2078791457, now seen corresponding path program 1 times [2020-12-09 11:07:21,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:21,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683092416] [2020-12-09 11:07:21,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:21,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:07:21,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683092416] [2020-12-09 11:07:21,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:07:21,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:07:21,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078079410] [2020-12-09 11:07:21,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:07:21,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:21,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:07:21,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:07:21,956 INFO L87 Difference]: Start difference. First operand 5151 states and 7219 transitions. Second operand 4 states. [2020-12-09 11:07:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:22,895 INFO L93 Difference]: Finished difference Result 16736 states and 23825 transitions. [2020-12-09 11:07:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:07:22,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2020-12-09 11:07:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:22,935 INFO L225 Difference]: With dead ends: 16736 [2020-12-09 11:07:22,935 INFO L226 Difference]: Without dead ends: 11586 [2020-12-09 11:07:22,940 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 11:07:22,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11586 states. [2020-12-09 11:07:23,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11586 to 10156. [2020-12-09 11:07:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10156 states. [2020-12-09 11:07:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10156 states to 10156 states and 12780 transitions. [2020-12-09 11:07:23,075 INFO L78 Accepts]: Start accepts. Automaton has 10156 states and 12780 transitions. Word has length 191 [2020-12-09 11:07:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:23,075 INFO L481 AbstractCegarLoop]: Abstraction has 10156 states and 12780 transitions. [2020-12-09 11:07:23,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:07:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 10156 states and 12780 transitions. [2020-12-09 11:07:23,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-12-09 11:07:23,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:23,087 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:23,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 11:07:23,087 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:23,087 INFO L82 PathProgramCache]: Analyzing trace with hash -214459847, now seen corresponding path program 1 times [2020-12-09 11:07:23,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:23,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381414209] [2020-12-09 11:07:23,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-09 11:07:23,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381414209] [2020-12-09 11:07:23,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:07:23,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:07:23,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994413582] [2020-12-09 11:07:23,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:07:23,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:23,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:07:23,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:07:23,174 INFO L87 Difference]: Start difference. First operand 10156 states and 12780 transitions. Second operand 4 states. [2020-12-09 11:07:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:23,967 INFO L93 Difference]: Finished difference Result 33755 states and 42517 transitions. [2020-12-09 11:07:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:07:23,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 219 [2020-12-09 11:07:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:24,022 INFO L225 Difference]: With dead ends: 33755 [2020-12-09 11:07:24,022 INFO L226 Difference]: Without dead ends: 23600 [2020-12-09 11:07:24,029 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 11:07:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23600 states. [2020-12-09 11:07:24,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23600 to 22883. [2020-12-09 11:07:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22883 states. [2020-12-09 11:07:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22883 states to 22883 states and 28583 transitions. [2020-12-09 11:07:24,261 INFO L78 Accepts]: Start accepts. Automaton has 22883 states and 28583 transitions. Word has length 219 [2020-12-09 11:07:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:24,261 INFO L481 AbstractCegarLoop]: Abstraction has 22883 states and 28583 transitions. [2020-12-09 11:07:24,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:07:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 22883 states and 28583 transitions. [2020-12-09 11:07:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-12-09 11:07:24,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:24,277 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:07:24,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 11:07:24,277 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:24,277 INFO L82 PathProgramCache]: Analyzing trace with hash -867372168, now seen corresponding path program 1 times [2020-12-09 11:07:24,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:24,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39619907] [2020-12-09 11:07:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-09 11:07:24,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39619907] [2020-12-09 11:07:24,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065980947] [2020-12-09 11:07:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/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 11:07:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:24,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 11:07:24,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:07:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 11:07:24,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:07:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 11:07:24,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 11:07:24,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 11:07:24,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334845476] [2020-12-09 11:07:24,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:07:24,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:24,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:07:24,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:07:24,899 INFO L87 Difference]: Start difference. First operand 22883 states and 28583 transitions. Second operand 3 states. [2020-12-09 11:07:25,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:25,668 INFO L93 Difference]: Finished difference Result 59064 states and 74285 transitions. [2020-12-09 11:07:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:07:25,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2020-12-09 11:07:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:25,710 INFO L225 Difference]: With dead ends: 59064 [2020-12-09 11:07:25,710 INFO L226 Difference]: Without dead ends: 36182 [2020-12-09 11:07:25,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 441 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:07:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36182 states. [2020-12-09 11:07:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36182 to 33894. [2020-12-09 11:07:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33894 states. [2020-12-09 11:07:26,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33894 states to 33894 states and 42892 transitions. [2020-12-09 11:07:26,138 INFO L78 Accepts]: Start accepts. Automaton has 33894 states and 42892 transitions. Word has length 222 [2020-12-09 11:07:26,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:26,138 INFO L481 AbstractCegarLoop]: Abstraction has 33894 states and 42892 transitions. [2020-12-09 11:07:26,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:07:26,138 INFO L276 IsEmpty]: Start isEmpty. Operand 33894 states and 42892 transitions. [2020-12-09 11:07:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-12-09 11:07:26,176 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:26,177 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:07:26,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-09 11:07:26,379 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:26,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1605670882, now seen corresponding path program 1 times [2020-12-09 11:07:26,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:26,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104463887] [2020-12-09 11:07:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-12-09 11:07:26,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104463887] [2020-12-09 11:07:26,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228439607] [2020-12-09 11:07:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/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 11:07:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:26,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 11:07:26,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:07:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 11:07:27,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:07:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-12-09 11:07:27,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 11:07:27,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-12-09 11:07:27,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076263628] [2020-12-09 11:07:27,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:07:27,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:27,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:07:27,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:07:27,377 INFO L87 Difference]: Start difference. First operand 33894 states and 42892 transitions. Second operand 4 states. [2020-12-09 11:07:28,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:28,560 INFO L93 Difference]: Finished difference Result 86377 states and 110191 transitions. [2020-12-09 11:07:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:07:28,560 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2020-12-09 11:07:28,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:28,630 INFO L225 Difference]: With dead ends: 86377 [2020-12-09 11:07:28,631 INFO L226 Difference]: Without dead ends: 52484 [2020-12-09 11:07:28,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:07:28,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52484 states. [2020-12-09 11:07:29,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52484 to 51912. [2020-12-09 11:07:29,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51912 states. [2020-12-09 11:07:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51912 states to 51912 states and 64848 transitions. [2020-12-09 11:07:29,460 INFO L78 Accepts]: Start accepts. Automaton has 51912 states and 64848 transitions. Word has length 305 [2020-12-09 11:07:29,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:29,460 INFO L481 AbstractCegarLoop]: Abstraction has 51912 states and 64848 transitions. [2020-12-09 11:07:29,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:07:29,460 INFO L276 IsEmpty]: Start isEmpty. Operand 51912 states and 64848 transitions. [2020-12-09 11:07:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-12-09 11:07:29,519 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:29,519 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:29,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 11:07:29,721 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:29,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:29,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1678630942, now seen corresponding path program 1 times [2020-12-09 11:07:29,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:29,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969091777] [2020-12-09 11:07:29,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 127 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-12-09 11:07:29,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969091777] [2020-12-09 11:07:29,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469400362] [2020-12-09 11:07:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:07:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:30,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 11:07:30,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:07:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-12-09 11:07:30,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:07:30,470 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-12-09 11:07:30,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 11:07:30,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 5 [2020-12-09 11:07:30,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165010697] [2020-12-09 11:07:30,472 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 11:07:30,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:30,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 11:07:30,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:07:30,473 INFO L87 Difference]: Start difference. First operand 51912 states and 64848 transitions. Second operand 3 states. [2020-12-09 11:07:31,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:31,225 INFO L93 Difference]: Finished difference Result 146296 states and 182698 transitions. [2020-12-09 11:07:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 11:07:31,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 313 [2020-12-09 11:07:31,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:31,326 INFO L225 Difference]: With dead ends: 146296 [2020-12-09 11:07:31,326 INFO L226 Difference]: Without dead ends: 94385 [2020-12-09 11:07:31,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 623 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:07:31,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94385 states. [2020-12-09 11:07:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94385 to 92953. [2020-12-09 11:07:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92953 states. [2020-12-09 11:07:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92953 states to 92953 states and 114042 transitions. [2020-12-09 11:07:32,363 INFO L78 Accepts]: Start accepts. Automaton has 92953 states and 114042 transitions. Word has length 313 [2020-12-09 11:07:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:32,363 INFO L481 AbstractCegarLoop]: Abstraction has 92953 states and 114042 transitions. [2020-12-09 11:07:32,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 11:07:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 92953 states and 114042 transitions. [2020-12-09 11:07:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-12-09 11:07:32,505 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:07:32,506 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:07:32,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-09 11:07:32,707 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:07:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:07:32,708 INFO L82 PathProgramCache]: Analyzing trace with hash 812496303, now seen corresponding path program 1 times [2020-12-09 11:07:32,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:07:32,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361001934] [2020-12-09 11:07:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:07:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 145 proven. 6 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2020-12-09 11:07:32,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361001934] [2020-12-09 11:07:32,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291887010] [2020-12-09 11:07:32,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:07:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:07:33,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 11:07:33,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:07:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-12-09 11:07:33,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:07:33,895 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 197 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-12-09 11:07:33,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 11:07:33,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [3] total 6 [2020-12-09 11:07:33,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038119567] [2020-12-09 11:07:33,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:07:33,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:07:33,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:07:33,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:07:33,897 INFO L87 Difference]: Start difference. First operand 92953 states and 114042 transitions. Second operand 4 states. [2020-12-09 11:07:35,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:07:35,722 INFO L93 Difference]: Finished difference Result 226372 states and 277223 transitions. [2020-12-09 11:07:35,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:07:35,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2020-12-09 11:07:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:07:35,723 INFO L225 Difference]: With dead ends: 226372 [2020-12-09 11:07:35,724 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 11:07:35,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:07:35,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 11:07:35,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 11:07:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 11:07:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 11:07:35,792 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 341 [2020-12-09 11:07:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:07:35,792 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 11:07:35,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:07:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 11:07:35,792 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 11:07:35,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:07:35,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 11:07:37,151 WARN L197 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 1088 DAG size of output: 37 [2020-12-09 11:07:37,986 WARN L197 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 1088 DAG size of output: 37 [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L498(lines 498 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L432(lines 432 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L366(lines 366 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L763(lines 763 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L632(lines 632 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L566(lines 566 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L302(lines 302 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L1293(lines 1293 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L1360(lines 1360 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L1162(lines 1162 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L105(lines 105 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L1096(lines 1096 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L1031(lines 1031 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L965(lines 965 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L899(lines 899 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,142 INFO L262 CegarLoopResult]: For program point L174(lines 174 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L835(lines 835 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L771(lines 771 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L507(lines 507 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L243(lines 243 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L1433(lines 1433 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L376(lines 376 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L311(lines 311 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L1236(lines 1236 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L576(lines 576 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L444(lines 444 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L1369(lines 1369 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L1105(lines 1105 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L643(lines 643 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L1172(lines 1172 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L115(lines 115 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L248(lines 248 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L182(lines 182 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L1041(lines 1041 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L909(lines 909 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L711(lines 711 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L976(lines 976 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L779(lines 779 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L846(lines 846 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L451(lines 451 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,143 INFO L262 CegarLoopResult]: For program point L1442(lines 1442 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L584(lines 584 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L387(lines 387 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L1114(lines 1114 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L1048(lines 1048 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L322(lines 322 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L1247(lines 1247 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L124(lines 124 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L917(lines 917 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L719(lines 719 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L653(lines 653 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L191(lines 191 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L1315(lines 1315 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L258(lines 258 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L1183(lines 1183 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L985(lines 985 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L787(lines 787 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L523(lines 523 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L854(lines 854 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L460(lines 460 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L593(lines 593 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L1452(lines 1452 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L329(lines 329 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L1122(lines 1122 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,144 INFO L262 CegarLoopResult]: For program point L65(lines 65 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1552) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L794(lines 794 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L1323(lines 1323 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L993(lines 993 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L927(lines 927 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L663(lines 663 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L267(lines 267 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L201(lines 201 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L1192(lines 1192 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L532(lines 532 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L1391(lines 1391 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L1259(lines 1259 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L136(lines 136 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L863(lines 863 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L468(lines 468 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L1130(lines 1130 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L668(lines 668 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L258 CegarLoopResult]: At program point L1659(lines 64 1660) the Hoare annotation is: (let ((.cse1 (not (= ~a6~0 1))) (.cse0 (= ~a27~0 1))) (or (= ~a12~0 1) (and .cse0 .cse1 (not (= ~a11~0 1)) (= ~a15~0 1)) (= ~a26~0 1) (and .cse0 (<= ~a6~0 0)) (<= 1 ~a3~0) (and (= ~a5~0 1) .cse0 .cse1) (and .cse0 (= ~a12~0 0)) (and (<= ~a11~0 0) .cse0))) [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L602(lines 602 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,145 INFO L262 CegarLoopResult]: For program point L1462(lines 1462 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L339(lines 339 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L1331(lines 1331 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L265 CegarLoopResult]: At program point L1662(lines 1662 1679) the Hoare annotation is: true [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L539(lines 539 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L407(lines 407 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L275(lines 275 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L1200(lines 1200 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L805(lines 805 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L145(lines 145 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L1004(lines 1004 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L1137(lines 1137 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L1071(lines 1071 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L873(lines 873 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L675(lines 675 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L477(lines 477 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L1336(lines 1336 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L743(lines 743 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L258 CegarLoopResult]: At program point L1668-2(lines 1668 1678) the Hoare annotation is: (let ((.cse1 (not (= ~a6~0 1))) (.cse0 (= ~a27~0 1))) (or (= ~a12~0 1) (and .cse0 .cse1 (not (= ~a11~0 1)) (= ~a15~0 1)) (= ~a26~0 1) (and .cse0 (<= ~a6~0 0)) (<= 1 ~a3~0) (and (= ~a5~0 1) .cse0 .cse1) (and .cse0 (= ~a12~0 0)) (and (<= ~a11~0 0) .cse0))) [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L1470(lines 1470 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L83(lines 83 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L613(lines 613 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L415(lines 415 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L349(lines 349 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,146 INFO L262 CegarLoopResult]: For program point L1142(lines 1142 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1076(lines 1076 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L878(lines 878 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L549(lines 549 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1210(lines 1210 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L814(lines 814 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1673(line 1673) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L286(lines 286 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1013(lines 1013 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L947(lines 947 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L156(lines 156 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L685(lines 685 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1412(lines 1412 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1346(lines 1346 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L223(lines 223 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L92(lines 92 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L753(lines 753 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1084(lines 1084 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L556(lines 556 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L490(lines 490 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L424(lines 424 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L358(lines 358 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1548-1(lines 64 1660) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1284(lines 1284 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L1152(lines 1152 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,147 INFO L262 CegarLoopResult]: For program point L624(lines 624 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L294(lines 294 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L1021(lines 1021 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L823(lines 823 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L1220(lines 1220 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L1551-1(lines 64 1660) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L957(lines 957 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L1552(line 1552) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L1354(lines 1354 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L165(lines 165 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L99(lines 99 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L694(lines 694 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,148 INFO L262 CegarLoopResult]: For program point L232(lines 232 1475) no Hoare annotation was computed. [2020-12-09 11:07:38,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:07:38 BoogieIcfgContainer [2020-12-09 11:07:38,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:07:38,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:07:38,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:07:38,160 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:07:38,160 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:07:16" (3/4) ... [2020-12-09 11:07:38,162 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 11:07:38,184 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 119 nodes and edges [2020-12-09 11:07:38,187 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2020-12-09 11:07:38,190 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 11:07:38,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 11:07:38,321 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_85174cbc-9f77-4d47-a53d-fb430e82f58c/bin/utaipan/witness.graphml [2020-12-09 11:07:38,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:07:38,322 INFO L168 Benchmark]: Toolchain (without parser) took 24974.24 ms. Allocated memory was 134.2 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 106.6 MB in the beginning and 1.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 707.2 MB. Max. memory is 16.1 GB. [2020-12-09 11:07:38,322 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 75.5 MB. Free memory was 45.6 MB in the beginning and 45.6 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:07:38,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.91 ms. Allocated memory is still 134.2 MB. Free memory was 106.6 MB in the beginning and 91.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. [2020-12-09 11:07:38,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.75 ms. Allocated memory is still 134.2 MB. Free memory was 91.4 MB in the beginning and 76.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 11:07:38,323 INFO L168 Benchmark]: Boogie Preprocessor took 74.92 ms. Allocated memory is still 134.2 MB. Free memory was 76.7 MB in the beginning and 65.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:07:38,323 INFO L168 Benchmark]: RCFGBuilder took 2373.79 ms. Allocated memory was 134.2 MB in the beginning and 190.8 MB in the end (delta: 56.6 MB). Free memory was 65.7 MB in the beginning and 68.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 71.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:07:38,323 INFO L168 Benchmark]: TraceAbstraction took 21622.69 ms. Allocated memory was 190.8 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 68.3 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.1 GB. [2020-12-09 11:07:38,324 INFO L168 Benchmark]: Witness Printer took 161.02 ms. Allocated memory is still 2.7 GB. Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2020-12-09 11:07:38,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 75.5 MB. Free memory was 45.6 MB in the beginning and 45.6 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 649.91 ms. Allocated memory is still 134.2 MB. Free memory was 106.6 MB in the beginning and 91.4 MB in the end (delta: 15.2 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.75 ms. Allocated memory is still 134.2 MB. Free memory was 91.4 MB in the beginning and 76.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.92 ms. Allocated memory is still 134.2 MB. Free memory was 76.7 MB in the beginning and 65.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2373.79 ms. Allocated memory was 134.2 MB in the beginning and 190.8 MB in the end (delta: 56.6 MB). Free memory was 65.7 MB in the beginning and 68.3 MB in the end (delta: -2.7 MB). Peak memory consumption was 71.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21622.69 ms. Allocated memory was 190.8 MB in the beginning and 2.7 GB in the end (delta: 2.5 GB). Free memory was 68.3 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.8 GB. Max. memory is 16.1 GB. * Witness Printer took 161.02 ms. Allocated memory is still 2.7 GB. Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1552]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1662]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1668]: Loop Invariant Derived loop invariant: ((((((a12 == 1 || (((a27 == 1 && !(a6 == 1)) && !(a11 == 1)) && a15 == 1)) || a26 == 1) || (a27 == 1 && a6 <= 0)) || 1 <= a3) || ((a5 == 1 && a27 == 1) && !(a6 == 1))) || (a27 == 1 && a12 == 0)) || (a11 <= 0 && a27 == 1) - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: ((((((a12 == 1 || (((a27 == 1 && !(a6 == 1)) && !(a11 == 1)) && a15 == 1)) || a26 == 1) || (a27 == 1 && a6 <= 0)) || 1 <= a3) || ((a5 == 1 && a27 == 1) && !(a6 == 1))) || (a27 == 1 && a12 == 0)) || (a11 <= 0 && a27 == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.4s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1612 SDtfs, 2031 SDslu, 386 SDs, 0 SdLazy, 6579 SolverSat, 1859 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2386 GetRequests, 2360 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92953occurred 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: 2.8s AutomataMinimizationTime, 12 MinimizatonAttempts, 6439 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 1871 NumberOfFragments, 115 HoareAnnotationTreeSize, 3 FomulaSimplifications, 77626 FormulaSimplificationTreeSizeReduction, 1.9s HoareSimplificationTime, 3 FomulaSimplificationsInter, 100 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 3728 NumberOfCodeBlocks, 3728 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4889 ConstructedInterpolants, 0 QuantifiedInterpolants, 3780000 SizeOfPredicates, 34 NumberOfNonLiveVariables, 2402 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 3434/3458 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...