./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label54.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label54.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82dff1713e271abdc8f24172a0abd315632e3f42 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:25:06,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:06,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:06,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:06,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:06,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:06,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:06,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:06,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:06,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:06,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:06,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:06,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:06,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:06,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:06,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:06,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:06,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:06,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:06,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:06,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:06,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:06,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:06,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:06,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:06,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:06,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:06,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:06,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:06,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:06,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:06,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:06,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:06,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:06,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:06,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:06,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:06,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:06,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:06,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:06,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:06,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:25:06,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:06,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:06,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:06,510 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:06,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:06,511 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:06,511 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:06,512 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:06,512 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:06,513 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:06,513 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:06,513 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:06,514 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:06,514 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:06,514 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:06,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:06,515 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:06,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:06,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:06,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:06,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:06,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:06,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:06,518 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:06,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:06,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:06,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:06,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:06,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:06,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:06,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:06,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:06,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:06,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:06,521 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:06,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:06,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:06,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:06,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:06,522 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82dff1713e271abdc8f24172a0abd315632e3f42 [2021-10-11 02:25:06,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:06,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:06,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:06,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:06,838 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:06,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label54.c [2021-10-11 02:25:06,943 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/data/1f6451a04/31caffe2136e429fb0e178b687484d1f/FLAG591d38e3e [2021-10-11 02:25:07,580 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:07,580 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/sv-benchmarks/c/eca-rers2012/Problem01_label54.c [2021-10-11 02:25:07,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/data/1f6451a04/31caffe2136e429fb0e178b687484d1f/FLAG591d38e3e [2021-10-11 02:25:07,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/data/1f6451a04/31caffe2136e429fb0e178b687484d1f [2021-10-11 02:25:07,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:07,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:07,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:07,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:07,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:07,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:07" (1/1) ... [2021-10-11 02:25:07,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0c7cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:07, skipping insertion in model container [2021-10-11 02:25:07,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:07" (1/1) ... [2021-10-11 02:25:07,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:07,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:08,387 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/sv-benchmarks/c/eca-rers2012/Problem01_label54.c[20718,20731] [2021-10-11 02:25:08,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:08,434 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:08,518 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/sv-benchmarks/c/eca-rers2012/Problem01_label54.c[20718,20731] [2021-10-11 02:25:08,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:08,551 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:08,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08 WrapperNode [2021-10-11 02:25:08,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:08,554 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:08,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:08,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:08,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... [2021-10-11 02:25:08,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... [2021-10-11 02:25:08,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:08,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:08,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:08,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:08,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... [2021-10-11 02:25:08,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... [2021-10-11 02:25:08,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... [2021-10-11 02:25:08,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... [2021-10-11 02:25:08,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... [2021-10-11 02:25:08,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... [2021-10-11 02:25:08,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... [2021-10-11 02:25:08,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:08,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:08,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:08,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:08,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:08,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:08,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:08,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:11,040 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:11,040 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:25:11,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:11 BoogieIcfgContainer [2021-10-11 02:25:11,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:11,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:11,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:11,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:11,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:07" (1/3) ... [2021-10-11 02:25:11,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d6b274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:11, skipping insertion in model container [2021-10-11 02:25:11,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:08" (2/3) ... [2021-10-11 02:25:11,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d6b274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:11, skipping insertion in model container [2021-10-11 02:25:11,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:11" (3/3) ... [2021-10-11 02:25:11,053 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2021-10-11 02:25:11,067 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:11,071 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:25:11,084 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:25:11,130 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:11,130 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:11,130 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:11,130 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:11,130 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:11,131 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:11,131 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:11,131 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:11,148 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:25:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:25:11,158 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:11,159 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] [2021-10-11 02:25:11,160 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:11,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1806906456, now seen corresponding path program 1 times [2021-10-11 02:25:11,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:11,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647511014] [2021-10-11 02:25:11,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:11,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647511014] [2021-10-11 02:25:11,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:11,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:11,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964993161] [2021-10-11 02:25:11,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:11,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:11,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:11,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:11,741 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:25:12,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:12,304 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:25:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:12,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:25:12,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:12,319 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:25:12,320 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:25:12,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:25:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:25:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:25:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2021-10-11 02:25:12,371 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2021-10-11 02:25:12,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:12,372 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2021-10-11 02:25:12,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:12,373 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2021-10-11 02:25:12,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-11 02:25:12,376 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:12,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:12,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:12,377 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:12,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:12,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1996671328, now seen corresponding path program 1 times [2021-10-11 02:25:12,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:12,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485860254] [2021-10-11 02:25:12,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:25:12,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485860254] [2021-10-11 02:25:12,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:12,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:12,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394723488] [2021-10-11 02:25:12,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:12,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:12,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:12,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:12,530 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand 3 states. [2021-10-11 02:25:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:13,010 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2021-10-11 02:25:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:13,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2021-10-11 02:25:13,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:13,015 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:25:13,015 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:25:13,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:25:13,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:25:13,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:25:13,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2021-10-11 02:25:13,042 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2021-10-11 02:25:13,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:13,043 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2021-10-11 02:25:13,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2021-10-11 02:25:13,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-11 02:25:13,049 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:13,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:13,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:13,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:13,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:13,051 INFO L82 PathProgramCache]: Analyzing trace with hash 525300950, now seen corresponding path program 1 times [2021-10-11 02:25:13,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:13,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097888313] [2021-10-11 02:25:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:13,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097888313] [2021-10-11 02:25:13,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:13,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:13,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853002702] [2021-10-11 02:25:13,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:13,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:13,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:13,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:13,183 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand 4 states. [2021-10-11 02:25:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:13,819 INFO L93 Difference]: Finished difference Result 715 states and 1141 transitions. [2021-10-11 02:25:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:13,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2021-10-11 02:25:13,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:13,823 INFO L225 Difference]: With dead ends: 715 [2021-10-11 02:25:13,823 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:25:13,825 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 [2021-10-11 02:25:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:25:13,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-10-11 02:25:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:25:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 639 transitions. [2021-10-11 02:25:13,873 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 639 transitions. Word has length 105 [2021-10-11 02:25:13,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:13,874 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 639 transitions. [2021-10-11 02:25:13,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 639 transitions. [2021-10-11 02:25:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-11 02:25:13,879 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:13,879 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:13,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:25:13,880 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash -863060192, now seen corresponding path program 1 times [2021-10-11 02:25:13,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:13,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461666969] [2021-10-11 02:25:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:25:13,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461666969] [2021-10-11 02:25:13,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:13,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:13,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568095554] [2021-10-11 02:25:13,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:13,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:13,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:13,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:13,997 INFO L87 Difference]: Start difference. First operand 429 states and 639 transitions. Second operand 3 states. [2021-10-11 02:25:14,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:14,319 INFO L93 Difference]: Finished difference Result 999 states and 1479 transitions. [2021-10-11 02:25:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:14,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2021-10-11 02:25:14,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:14,323 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:25:14,323 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:25:14,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:25:14,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 429. [2021-10-11 02:25:14,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2021-10-11 02:25:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 627 transitions. [2021-10-11 02:25:14,341 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 627 transitions. Word has length 109 [2021-10-11 02:25:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:14,341 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 627 transitions. [2021-10-11 02:25:14,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:14,341 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 627 transitions. [2021-10-11 02:25:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-11 02:25:14,344 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:14,344 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:14,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:25:14,345 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:14,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1821422296, now seen corresponding path program 1 times [2021-10-11 02:25:14,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:14,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565537046] [2021-10-11 02:25:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:25:14,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565537046] [2021-10-11 02:25:14,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:14,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:14,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932710004] [2021-10-11 02:25:14,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:14,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:14,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:14,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:14,417 INFO L87 Difference]: Start difference. First operand 429 states and 627 transitions. Second operand 4 states. [2021-10-11 02:25:14,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:14,977 INFO L93 Difference]: Finished difference Result 1354 states and 1955 transitions. [2021-10-11 02:25:14,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:14,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2021-10-11 02:25:14,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:14,983 INFO L225 Difference]: With dead ends: 1354 [2021-10-11 02:25:14,983 INFO L226 Difference]: Without dead ends: 784 [2021-10-11 02:25:14,985 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 [2021-10-11 02:25:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-10-11 02:25:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2021-10-11 02:25:15,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:25:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 998 transitions. [2021-10-11 02:25:15,010 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 998 transitions. Word has length 113 [2021-10-11 02:25:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:15,010 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 998 transitions. [2021-10-11 02:25:15,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 998 transitions. [2021-10-11 02:25:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-11 02:25:15,014 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:15,014 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:15,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:25:15,015 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:15,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:15,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1123296268, now seen corresponding path program 1 times [2021-10-11 02:25:15,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:15,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092794306] [2021-10-11 02:25:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-11 02:25:15,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092794306] [2021-10-11 02:25:15,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:15,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:15,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650042823] [2021-10-11 02:25:15,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:15,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:15,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:15,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:15,073 INFO L87 Difference]: Start difference. First operand 784 states and 998 transitions. Second operand 3 states. [2021-10-11 02:25:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:15,417 INFO L93 Difference]: Finished difference Result 1851 states and 2333 transitions. [2021-10-11 02:25:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:15,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2021-10-11 02:25:15,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:15,425 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:25:15,426 INFO L226 Difference]: Without dead ends: 1068 [2021-10-11 02:25:15,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2021-10-11 02:25:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 926. [2021-10-11 02:25:15,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:25:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1175 transitions. [2021-10-11 02:25:15,464 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1175 transitions. Word has length 122 [2021-10-11 02:25:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:15,464 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1175 transitions. [2021-10-11 02:25:15,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:15,465 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1175 transitions. [2021-10-11 02:25:15,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-10-11 02:25:15,469 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:15,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:15,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:25:15,469 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:15,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:15,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1134311930, now seen corresponding path program 1 times [2021-10-11 02:25:15,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:15,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220233571] [2021-10-11 02:25:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-10-11 02:25:15,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220233571] [2021-10-11 02:25:15,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:15,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:25:15,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71750788] [2021-10-11 02:25:15,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:15,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:15,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:15,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:15,548 INFO L87 Difference]: Start difference. First operand 926 states and 1175 transitions. Second operand 3 states. [2021-10-11 02:25:15,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:15,823 INFO L93 Difference]: Finished difference Result 1851 states and 2349 transitions. [2021-10-11 02:25:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:15,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2021-10-11 02:25:15,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:15,829 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:25:15,830 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:25:15,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:25:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 926. [2021-10-11 02:25:15,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:25:15,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1161 transitions. [2021-10-11 02:25:15,877 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1161 transitions. Word has length 138 [2021-10-11 02:25:15,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:15,878 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1161 transitions. [2021-10-11 02:25:15,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1161 transitions. [2021-10-11 02:25:15,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-10-11 02:25:15,882 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:15,882 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:15,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:25:15,882 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:15,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2113823908, now seen corresponding path program 1 times [2021-10-11 02:25:15,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:15,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327463292] [2021-10-11 02:25:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-10-11 02:25:15,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327463292] [2021-10-11 02:25:15,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:15,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:15,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863247388] [2021-10-11 02:25:15,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:15,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:15,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:15,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:15,979 INFO L87 Difference]: Start difference. First operand 926 states and 1161 transitions. Second operand 4 states. [2021-10-11 02:25:16,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:16,379 INFO L93 Difference]: Finished difference Result 1922 states and 2403 transitions. [2021-10-11 02:25:16,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:16,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2021-10-11 02:25:16,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:16,388 INFO L225 Difference]: With dead ends: 1922 [2021-10-11 02:25:16,388 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:25:16,389 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 [2021-10-11 02:25:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:25:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2021-10-11 02:25:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:25:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1230 transitions. [2021-10-11 02:25:16,417 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1230 transitions. Word has length 154 [2021-10-11 02:25:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:16,419 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1230 transitions. [2021-10-11 02:25:16,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1230 transitions. [2021-10-11 02:25:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-11 02:25:16,422 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:16,423 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:25:16,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:25:16,423 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:16,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1461365399, now seen corresponding path program 1 times [2021-10-11 02:25:16,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:16,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091589621] [2021-10-11 02:25:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-10-11 02:25:16,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091589621] [2021-10-11 02:25:16,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:16,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:16,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077079127] [2021-10-11 02:25:16,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:16,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:16,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:16,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:16,611 INFO L87 Difference]: Start difference. First operand 997 states and 1230 transitions. Second operand 3 states. [2021-10-11 02:25:16,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:16,916 INFO L93 Difference]: Finished difference Result 2277 states and 2824 transitions. [2021-10-11 02:25:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:16,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2021-10-11 02:25:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:16,924 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:25:16,924 INFO L226 Difference]: Without dead ends: 1281 [2021-10-11 02:25:16,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2021-10-11 02:25:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1139. [2021-10-11 02:25:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:25:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1415 transitions. [2021-10-11 02:25:16,960 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1415 transitions. Word has length 171 [2021-10-11 02:25:16,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:16,960 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1415 transitions. [2021-10-11 02:25:16,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1415 transitions. [2021-10-11 02:25:16,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-10-11 02:25:16,964 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:16,964 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:16,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:25:16,965 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:16,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:16,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1229743210, now seen corresponding path program 1 times [2021-10-11 02:25:16,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:16,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050499037] [2021-10-11 02:25:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:17,497 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:17,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050499037] [2021-10-11 02:25:17,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425179322] [2021-10-11 02:25:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:17,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:25:17,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-11 02:25:17,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-11 02:25:18,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:25:18,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:25:18,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683804622] [2021-10-11 02:25:18,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:18,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:18,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:18,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:18,151 INFO L87 Difference]: Start difference. First operand 1139 states and 1415 transitions. Second operand 3 states. [2021-10-11 02:25:18,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:18,495 INFO L93 Difference]: Finished difference Result 2277 states and 2829 transitions. [2021-10-11 02:25:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:18,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2021-10-11 02:25:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:18,502 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:25:18,502 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:25:18,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:25:18,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:25:18,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2021-10-11 02:25:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:25:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1184 transitions. [2021-10-11 02:25:18,534 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1184 transitions. Word has length 175 [2021-10-11 02:25:18,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:18,535 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1184 transitions. [2021-10-11 02:25:18,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1184 transitions. [2021-10-11 02:25:18,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-10-11 02:25:18,539 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:18,539 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:18,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:25:18,760 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:18,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:18,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1682002184, now seen corresponding path program 1 times [2021-10-11 02:25:18,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:18,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609290595] [2021-10-11 02:25:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 238 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-10-11 02:25:19,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609290595] [2021-10-11 02:25:19,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:19,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:25:19,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129439500] [2021-10-11 02:25:19,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:25:19,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:19,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:25:19,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:19,004 INFO L87 Difference]: Start difference. First operand 997 states and 1184 transitions. Second operand 5 states. [2021-10-11 02:25:19,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:19,458 INFO L93 Difference]: Finished difference Result 2238 states and 2639 transitions. [2021-10-11 02:25:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:19,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2021-10-11 02:25:19,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:19,466 INFO L225 Difference]: With dead ends: 2238 [2021-10-11 02:25:19,466 INFO L226 Difference]: Without dead ends: 1242 [2021-10-11 02:25:19,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:25:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2021-10-11 02:25:19,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1139. [2021-10-11 02:25:19,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:25:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1334 transitions. [2021-10-11 02:25:19,505 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1334 transitions. Word has length 220 [2021-10-11 02:25:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:19,505 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1334 transitions. [2021-10-11 02:25:19,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:25:19,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1334 transitions. [2021-10-11 02:25:19,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-10-11 02:25:19,510 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:19,511 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:25:19,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:25:19,511 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:19,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:19,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1742520921, now seen corresponding path program 1 times [2021-10-11 02:25:19,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:19,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895187655] [2021-10-11 02:25:19,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:19,633 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-10-11 02:25:19,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895187655] [2021-10-11 02:25:19,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:19,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:19,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153109497] [2021-10-11 02:25:19,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:19,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:19,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:19,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:19,636 INFO L87 Difference]: Start difference. First operand 1139 states and 1334 transitions. Second operand 3 states. [2021-10-11 02:25:19,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:19,935 INFO L93 Difference]: Finished difference Result 2277 states and 2667 transitions. [2021-10-11 02:25:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:19,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2021-10-11 02:25:19,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:19,942 INFO L225 Difference]: With dead ends: 2277 [2021-10-11 02:25:19,943 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:25:19,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:19,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:25:19,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-10-11 02:25:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:25:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1303 transitions. [2021-10-11 02:25:19,979 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1303 transitions. Word has length 233 [2021-10-11 02:25:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:19,980 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1303 transitions. [2021-10-11 02:25:19,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1303 transitions. [2021-10-11 02:25:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-10-11 02:25:19,985 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:19,985 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:19,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:25:19,986 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:19,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1337017151, now seen corresponding path program 1 times [2021-10-11 02:25:19,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:19,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045207343] [2021-10-11 02:25:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-11 02:25:20,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045207343] [2021-10-11 02:25:20,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:20,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:20,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698356809] [2021-10-11 02:25:20,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:20,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:20,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:20,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:20,169 INFO L87 Difference]: Start difference. First operand 1139 states and 1303 transitions. Second operand 3 states. [2021-10-11 02:25:20,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:20,509 INFO L93 Difference]: Finished difference Result 2488 states and 2834 transitions. [2021-10-11 02:25:20,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:20,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2021-10-11 02:25:20,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:20,510 INFO L225 Difference]: With dead ends: 2488 [2021-10-11 02:25:20,510 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:20,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:20,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:20,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:20,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:20,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 242 [2021-10-11 02:25:20,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:20,514 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:20,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:20,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:20,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-11 02:25:20,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:25:21,001 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 38 [2021-10-11 02:25:21,351 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2021-10-11 02:25:21,354 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:25:21,355 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:25:21,356 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:25:21,357 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:25:21,358 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse7 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (= ~a21~0 1)) (.cse10 (<= ~a16~0 4)) (.cse4 (= ~a17~0 1)) (.cse9 (<= ~a8~0 13)) (.cse3 (<= 15 ~a8~0)) (.cse0 (<= ~a16~0 5)) (.cse8 (<= ~a17~0 0)) (.cse2 (not .cse6))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse1 .cse4) (and .cse7 .cse8 .cse6 .cse9) (and .cse7 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse8 .cse6) (and .cse10 .cse8 .cse9) (and .cse5 .cse10 .cse6 .cse4) (and .cse0 .cse4 .cse9) (and .cse8 .cse2 .cse3) (and .cse0 .cse8 .cse2)))) [2021-10-11 02:25:21,358 INFO L262 CegarLoopResult]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:25:21,358 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:25:21,358 INFO L262 CegarLoopResult]: For program point L552(line 552) no Hoare annotation was computed. [2021-10-11 02:25:21,358 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:25:21,358 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:25:21,358 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:25:21,358 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:25:21,358 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:25:21,359 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:25:21,360 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:25:21,360 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:25:21,360 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:25:21,360 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse6 (= ~a20~0 1))) (let ((.cse7 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse5 (= ~a21~0 1)) (.cse10 (<= ~a16~0 4)) (.cse4 (= ~a17~0 1)) (.cse9 (<= ~a8~0 13)) (.cse3 (<= 15 ~a8~0)) (.cse0 (<= ~a16~0 5)) (.cse8 (<= ~a17~0 0)) (.cse2 (not .cse6))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse6 .cse1 .cse4) (and .cse7 .cse8 .cse6 .cse9) (and .cse7 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse8 .cse6) (and .cse10 .cse8 .cse9) (and .cse5 .cse10 .cse6 .cse4) (and .cse0 .cse4 .cse9) (and .cse8 .cse2 .cse3) (and .cse0 .cse8 .cse2)))) [2021-10-11 02:25:21,360 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:25:21,362 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 552) no Hoare annotation was computed. [2021-10-11 02:25:21,362 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:25:21,362 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:25:21,362 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:25:21,362 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:25:21,362 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:25:21,362 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:25:21,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:21 BoogieIcfgContainer [2021-10-11 02:25:21,396 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:21,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:21,397 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:21,397 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:21,397 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:11" (3/4) ... [2021-10-11 02:25:21,400 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:21,436 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:25:21,438 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:25:21,440 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:25:21,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:25:21,598 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dc68d62-bf82-4974-b9a2-317f7b661f6a/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:21,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:21,599 INFO L168 Benchmark]: Toolchain (without parser) took 13779.52 ms. Allocated memory was 109.1 MB in the beginning and 398.5 MB in the end (delta: 289.4 MB). Free memory was 79.1 MB in the beginning and 213.6 MB in the end (delta: -134.5 MB). Peak memory consumption was 155.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:21,600 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 109.1 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:21,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.05 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 68.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:21,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.50 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 62.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:21,601 INFO L168 Benchmark]: Boogie Preprocessor took 93.27 ms. Allocated memory is still 109.1 MB. Free memory was 62.8 MB in the beginning and 58.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:21,602 INFO L168 Benchmark]: RCFGBuilder took 2291.35 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 58.0 MB in the beginning and 53.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:21,602 INFO L168 Benchmark]: TraceAbstraction took 10350.29 ms. Allocated memory was 148.9 MB in the beginning and 398.5 MB in the end (delta: 249.6 MB). Free memory was 53.2 MB in the beginning and 228.3 MB in the end (delta: -175.1 MB). Peak memory consumption was 172.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:21,602 INFO L168 Benchmark]: Witness Printer took 201.59 ms. Allocated memory is still 398.5 MB. Free memory was 228.3 MB in the beginning and 213.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:21,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 109.1 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 717.05 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 68.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.50 ms. Allocated memory is still 109.1 MB. Free memory was 68.4 MB in the beginning and 62.8 MB in the end (delta: 5.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.27 ms. Allocated memory is still 109.1 MB. Free memory was 62.8 MB in the beginning and 58.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2291.35 ms. Allocated memory was 109.1 MB in the beginning and 148.9 MB in the end (delta: 39.8 MB). Free memory was 58.0 MB in the beginning and 53.2 MB in the end (delta: 4.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10350.29 ms. Allocated memory was 148.9 MB in the beginning and 398.5 MB in the end (delta: 249.6 MB). Free memory was 53.2 MB in the beginning and 228.3 MB in the end (delta: -175.1 MB). Peak memory consumption was 172.0 MB. Max. memory is 16.1 GB. * Witness Printer took 201.59 ms. Allocated memory is still 398.5 MB. Free memory was 228.3 MB in the beginning and 213.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 552]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((((a16 <= 5 && !(a7 == 1)) && !(a20 == 1)) && 15 <= a8) && a17 == 1) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || ((((a16 == 6 && !(a7 == 1)) && !(a20 == 1)) && 15 <= a8) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 4 && a17 <= 0) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1)) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((((((a16 <= 5 && !(a7 == 1)) && !(a20 == 1)) && 15 <= a8) && a17 == 1) || (((a21 == 1 && a20 == 1) && !(a7 == 1)) && a17 == 1)) || (((a16 == 6 && a17 <= 0) && a20 == 1) && a8 <= 13)) || ((((a16 == 6 && !(a7 == 1)) && !(a20 == 1)) && 15 <= a8) && a17 == 1)) || ((a21 == 1 && a17 <= 0) && a20 == 1)) || ((a16 <= 4 && a17 <= 0) && a8 <= 13)) || (((a21 == 1 && a16 <= 4) && a20 == 1) && a17 == 1)) || ((a16 <= 5 && a17 == 1) && a8 <= 13)) || ((a17 <= 0 && !(a20 == 1)) && 15 <= a8)) || ((a16 <= 5 && a17 <= 0) && !(a20 == 1)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 13, TraceHistogramMax: 7, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 692 SDtfs, 916 SDslu, 61 SDs, 0 SdLazy, 3116 SolverSat, 749 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 387 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1139occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 671 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 47 NumberOfFragments, 259 HoareAnnotationTreeSize, 3 FomulaSimplifications, 2928 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 760 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 2103 NumberOfCodeBlocks, 2103 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2263 ConstructedInterpolants, 0 QuantifiedInterpolants, 1353491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 15 InterpolantComputations, 14 PerfectInterpolantSequences, 2117/2209 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...