./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label00.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_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/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_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/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_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/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 aa303202e206e0417727207f0e09817a035cbfbb ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:30:43,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:43,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:43,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:43,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:43,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:43,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:43,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:43,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:43,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:43,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:43,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:43,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:43,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:43,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:43,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:43,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:43,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:43,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:43,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:43,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:43,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:43,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:43,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:43,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:43,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:43,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:43,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:43,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:43,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:43,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:43,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:43,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:43,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:43,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:43,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:43,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:43,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:43,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:43,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:43,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:43,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:30:43,645 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:43,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:43,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:43,647 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:43,648 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:43,648 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:43,648 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:43,655 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:43,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:43,656 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:43,657 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:43,657 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:43,657 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:43,658 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:43,658 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:43,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:43,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:30:43,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:43,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:30:43,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:43,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:43,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:43,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:43,662 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:30:43,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:30:43,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:43,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:43,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:43,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:43,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:43,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:43,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:43,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:43,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:43,666 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:43,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:43,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:43,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:43,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:43,668 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_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa303202e206e0417727207f0e09817a035cbfbb [2021-10-11 02:30:43,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:43,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:43,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:43,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:43,991 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:43,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label00.c [2021-10-11 02:30:44,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/data/f093881ab/80b61b827f67438da10698305c31deb9/FLAGacbb53eb5 [2021-10-11 02:30:44,727 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:44,728 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/sv-benchmarks/c/eca-rers2012/Problem01_label00.c [2021-10-11 02:30:44,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/data/f093881ab/80b61b827f67438da10698305c31deb9/FLAGacbb53eb5 [2021-10-11 02:30:44,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/data/f093881ab/80b61b827f67438da10698305c31deb9 [2021-10-11 02:30:44,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:44,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:44,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:44,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:44,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:44,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:44" (1/1) ... [2021-10-11 02:30:44,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15022571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:44, skipping insertion in model container [2021-10-11 02:30:44,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:44" (1/1) ... [2021-10-11 02:30:45,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:45,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:45,454 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_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/sv-benchmarks/c/eca-rers2012/Problem01_label00.c[18976,18989] [2021-10-11 02:30:45,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:45,489 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:45,589 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_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/sv-benchmarks/c/eca-rers2012/Problem01_label00.c[18976,18989] [2021-10-11 02:30:45,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:45,635 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:45,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45 WrapperNode [2021-10-11 02:30:45,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:45,637 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:45,637 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:45,637 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:45,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... [2021-10-11 02:30:45,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... [2021-10-11 02:30:45,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:45,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:45,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:45,740 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:45,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... [2021-10-11 02:30:45,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... [2021-10-11 02:30:45,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... [2021-10-11 02:30:45,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... [2021-10-11 02:30:45,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... [2021-10-11 02:30:45,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... [2021-10-11 02:30:45,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... [2021-10-11 02:30:45,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:45,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:45,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:45,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:45,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/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 02:30:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:30:45,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:30:45,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:45,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:48,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:48,023 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:30:48,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:48 BoogieIcfgContainer [2021-10-11 02:30:48,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:48,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:48,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:48,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:48,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:44" (1/3) ... [2021-10-11 02:30:48,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a79bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:48, skipping insertion in model container [2021-10-11 02:30:48,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:45" (2/3) ... [2021-10-11 02:30:48,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a79bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:48, skipping insertion in model container [2021-10-11 02:30:48,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:48" (3/3) ... [2021-10-11 02:30:48,038 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2021-10-11 02:30:48,054 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:48,058 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:30:48,069 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:30:48,108 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:48,108 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:48,109 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:48,109 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:48,109 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:48,109 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:48,109 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:48,109 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:30:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:30:48,136 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:48,137 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 02:30:48,137 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:48,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:48,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1806910040, now seen corresponding path program 1 times [2021-10-11 02:30:48,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:48,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90297724] [2021-10-11 02:30:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:48,714 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 02:30:48,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90297724] [2021-10-11 02:30:48,715 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:48,716 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:48,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985833359] [2021-10-11 02:30:48,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:48,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:48,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:48,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:48,739 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:30:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:49,503 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:30:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:49,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:30:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:49,529 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:30:49,530 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:30:49,534 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 02:30:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:30:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:30:49,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:30:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:30:49,604 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:30:49,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:49,605 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:30:49,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:49,606 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:30:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:30:49,616 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:49,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:49,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:49,617 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:49,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1703775175, now seen corresponding path program 1 times [2021-10-11 02:30:49,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:49,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961794832] [2021-10-11 02:30:49,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:49,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:49,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961794832] [2021-10-11 02:30:49,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:49,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:49,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985371720] [2021-10-11 02:30:49,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:49,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:49,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:49,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:49,906 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:30:50,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:50,663 INFO L93 Difference]: Finished difference Result 571 states and 986 transitions. [2021-10-11 02:30:50,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:50,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:30:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:50,670 INFO L225 Difference]: With dead ends: 571 [2021-10-11 02:30:50,670 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:30:50,677 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 02:30:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:30:50,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 287. [2021-10-11 02:30:50,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:30:50,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 368 transitions. [2021-10-11 02:30:50,717 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 368 transitions. Word has length 78 [2021-10-11 02:30:50,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:50,720 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 368 transitions. [2021-10-11 02:30:50,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 368 transitions. [2021-10-11 02:30:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-11 02:30:50,724 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:50,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:50,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:30:50,725 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:50,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:50,726 INFO L82 PathProgramCache]: Analyzing trace with hash -494779058, now seen corresponding path program 1 times [2021-10-11 02:30:50,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:50,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59238256] [2021-10-11 02:30:50,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:50,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59238256] [2021-10-11 02:30:50,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:50,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:50,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226081981] [2021-10-11 02:30:50,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:50,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:50,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:50,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:50,834 INFO L87 Difference]: Start difference. First operand 287 states and 368 transitions. Second operand 4 states. [2021-10-11 02:30:51,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:51,338 INFO L93 Difference]: Finished difference Result 715 states and 952 transitions. [2021-10-11 02:30:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:51,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2021-10-11 02:30:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:51,345 INFO L225 Difference]: With dead ends: 715 [2021-10-11 02:30:51,345 INFO L226 Difference]: Without dead ends: 429 [2021-10-11 02:30:51,346 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 02:30:51,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-10-11 02:30:51,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2021-10-11 02:30:51,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:30:51,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 484 transitions. [2021-10-11 02:30:51,364 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 484 transitions. Word has length 83 [2021-10-11 02:30:51,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:51,364 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 484 transitions. [2021-10-11 02:30:51,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:51,364 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 484 transitions. [2021-10-11 02:30:51,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-11 02:30:51,366 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:51,366 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:51,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:30:51,366 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:51,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1470703653, now seen corresponding path program 1 times [2021-10-11 02:30:51,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:51,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012209202] [2021-10-11 02:30:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:51,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:30:51,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012209202] [2021-10-11 02:30:51,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:51,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:51,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051012374] [2021-10-11 02:30:51,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:51,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:51,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:51,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:51,469 INFO L87 Difference]: Start difference. First operand 358 states and 484 transitions. Second operand 3 states. [2021-10-11 02:30:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:51,823 INFO L93 Difference]: Finished difference Result 999 states and 1341 transitions. [2021-10-11 02:30:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:51,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 95 [2021-10-11 02:30:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:51,827 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:30:51,827 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:30:51,828 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 02:30:51,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:30:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:30:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:30:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 780 transitions. [2021-10-11 02:30:51,850 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 780 transitions. Word has length 95 [2021-10-11 02:30:51,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:51,850 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 780 transitions. [2021-10-11 02:30:51,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 780 transitions. [2021-10-11 02:30:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-10-11 02:30:51,852 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:51,853 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:51,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:30:51,853 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:51,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:51,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1745914186, now seen corresponding path program 1 times [2021-10-11 02:30:51,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:51,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108501505] [2021-10-11 02:30:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:51,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108501505] [2021-10-11 02:30:51,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:51,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:30:51,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986684087] [2021-10-11 02:30:51,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:51,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:51,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:51,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:51,954 INFO L87 Difference]: Start difference. First operand 571 states and 780 transitions. Second operand 4 states. [2021-10-11 02:30:52,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:52,537 INFO L93 Difference]: Finished difference Result 1496 states and 2088 transitions. [2021-10-11 02:30:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:52,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2021-10-11 02:30:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:52,547 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:30:52,547 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:30:52,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:30:52,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 642. [2021-10-11 02:30:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:30:52,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 859 transitions. [2021-10-11 02:30:52,571 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 859 transitions. Word has length 101 [2021-10-11 02:30:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:52,572 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 859 transitions. [2021-10-11 02:30:52,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 859 transitions. [2021-10-11 02:30:52,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-10-11 02:30:52,574 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:52,574 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, 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 02:30:52,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:30:52,574 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:52,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:52,575 INFO L82 PathProgramCache]: Analyzing trace with hash -656958643, now seen corresponding path program 1 times [2021-10-11 02:30:52,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:52,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4388308] [2021-10-11 02:30:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:30:52,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4388308] [2021-10-11 02:30:52,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:52,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:52,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011918682] [2021-10-11 02:30:52,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:30:52,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:52,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:30:52,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:30:52,655 INFO L87 Difference]: Start difference. First operand 642 states and 859 transitions. Second operand 4 states. [2021-10-11 02:30:53,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:53,196 INFO L93 Difference]: Finished difference Result 1496 states and 1980 transitions. [2021-10-11 02:30:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:30:53,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2021-10-11 02:30:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:53,204 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:30:53,205 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:30:53,206 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 02:30:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:30:53,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-11 02:30:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:30:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1024 transitions. [2021-10-11 02:30:53,231 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1024 transitions. Word has length 115 [2021-10-11 02:30:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:53,236 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1024 transitions. [2021-10-11 02:30:53,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:30:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1024 transitions. [2021-10-11 02:30:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-10-11 02:30:53,241 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:53,242 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, 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] [2021-10-11 02:30:53,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:30:53,242 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:53,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:53,244 INFO L82 PathProgramCache]: Analyzing trace with hash 905968168, now seen corresponding path program 1 times [2021-10-11 02:30:53,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:53,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866803920] [2021-10-11 02:30:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-11 02:30:53,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866803920] [2021-10-11 02:30:53,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:53,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:53,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115097955] [2021-10-11 02:30:53,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:53,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:53,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:53,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:53,386 INFO L87 Difference]: Start difference. First operand 784 states and 1024 transitions. Second operand 3 states. [2021-10-11 02:30:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:53,752 INFO L93 Difference]: Finished difference Result 1780 states and 2298 transitions. [2021-10-11 02:30:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:53,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2021-10-11 02:30:53,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:53,760 INFO L225 Difference]: With dead ends: 1780 [2021-10-11 02:30:53,760 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:30:53,762 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 02:30:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:30:53,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 855. [2021-10-11 02:30:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:30:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1116 transitions. [2021-10-11 02:30:53,793 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1116 transitions. Word has length 132 [2021-10-11 02:30:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:53,794 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1116 transitions. [2021-10-11 02:30:53,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1116 transitions. [2021-10-11 02:30:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-10-11 02:30:53,798 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:53,798 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 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, 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] [2021-10-11 02:30:53,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:30:53,799 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:53,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:53,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1422759990, now seen corresponding path program 1 times [2021-10-11 02:30:53,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:53,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570160891] [2021-10-11 02:30:53,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:30:53,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570160891] [2021-10-11 02:30:53,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:53,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:30:53,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875927532] [2021-10-11 02:30:53,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:53,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:53,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:53,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:30:53,948 INFO L87 Difference]: Start difference. First operand 855 states and 1116 transitions. Second operand 3 states. [2021-10-11 02:30:54,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:54,331 INFO L93 Difference]: Finished difference Result 1851 states and 2384 transitions. [2021-10-11 02:30:54,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:54,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2021-10-11 02:30:54,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:54,338 INFO L225 Difference]: With dead ends: 1851 [2021-10-11 02:30:54,339 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:30:54,340 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 02:30:54,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:30:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 926. [2021-10-11 02:30:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 926 states. [2021-10-11 02:30:54,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1155 transitions. [2021-10-11 02:30:54,367 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1155 transitions. Word has length 175 [2021-10-11 02:30:54,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:54,367 INFO L481 AbstractCegarLoop]: Abstraction has 926 states and 1155 transitions. [2021-10-11 02:30:54,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:54,368 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1155 transitions. [2021-10-11 02:30:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-10-11 02:30:54,371 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:54,371 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 02:30:54,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:30:54,372 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:54,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:54,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1489446601, now seen corresponding path program 1 times [2021-10-11 02:30:54,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:54,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607608448] [2021-10-11 02:30:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:54,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 159 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-11 02:30:54,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607608448] [2021-10-11 02:30:54,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337675044] [2021-10-11 02:30:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/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 02:30:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:54,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:30:54,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-11 02:30:55,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-11 02:30:55,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:30:55,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:30:55,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556528202] [2021-10-11 02:30:55,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:55,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:55,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:55,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:55,376 INFO L87 Difference]: Start difference. First operand 926 states and 1155 transitions. Second operand 3 states. [2021-10-11 02:30:55,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:55,760 INFO L93 Difference]: Finished difference Result 2135 states and 2652 transitions. [2021-10-11 02:30:55,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:55,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2021-10-11 02:30:55,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:55,768 INFO L225 Difference]: With dead ends: 2135 [2021-10-11 02:30:55,768 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:30:55,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 373 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:55,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:30:55,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1068. [2021-10-11 02:30:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:30:55,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1335 transitions. [2021-10-11 02:30:55,801 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1335 transitions. Word has length 188 [2021-10-11 02:30:55,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:55,801 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1335 transitions. [2021-10-11 02:30:55,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:55,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1335 transitions. [2021-10-11 02:30:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-10-11 02:30:55,805 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:55,805 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:30:56,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 02:30:56,022 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:56,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:56,022 INFO L82 PathProgramCache]: Analyzing trace with hash 922665825, now seen corresponding path program 1 times [2021-10-11 02:30:56,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:56,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69085472] [2021-10-11 02:30:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 124 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:30:56,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69085472] [2021-10-11 02:30:56,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501295415] [2021-10-11 02:30:56,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:30:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:56,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:30:56,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-11 02:30:56,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:30:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-10-11 02:30:56,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:30:56,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2021-10-11 02:30:56,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033168957] [2021-10-11 02:30:56,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:30:56,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:56,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:30:56,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:56,826 INFO L87 Difference]: Start difference. First operand 1068 states and 1335 transitions. Second operand 3 states. [2021-10-11 02:30:57,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:57,194 INFO L93 Difference]: Finished difference Result 2133 states and 2668 transitions. [2021-10-11 02:30:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:30:57,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2021-10-11 02:30:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:57,196 INFO L225 Difference]: With dead ends: 2133 [2021-10-11 02:30:57,196 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:30:57,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:57,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:30:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:30:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:30:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:30:57,199 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 197 [2021-10-11 02:30:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:57,200 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:30:57,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:30:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:30:57,200 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:30:57,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:30:57,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:30:57,806 WARN L197 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-10-11 02:30:58,122 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-10-11 02:30:58,125 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:30:58,126 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:30:58,126 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:30:58,126 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:30:58,126 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:30:58,126 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:30:58,126 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:30:58,126 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:30:58,126 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:30:58,127 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:30:58,127 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:30:58,127 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:30:58,127 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:30:58,127 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:30:58,127 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:30:58,127 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:30:58,127 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:30:58,127 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:30:58,128 INFO L262 CegarLoopResult]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:30:58,128 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:30:58,128 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:30:58,128 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:30:58,128 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:30:58,128 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:30:58,128 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:30:58,128 INFO L262 CegarLoopResult]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:30:58,129 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:30:58,129 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:30:58,129 INFO L262 CegarLoopResult]: For program point L510(line 510) no Hoare annotation was computed. [2021-10-11 02:30:58,129 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:30:58,129 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:30:58,129 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:30:58,129 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:30:58,129 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:30:58,130 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:30:58,130 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:30:58,130 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:30:58,130 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:30:58,130 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:30:58,130 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:30:58,130 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:30:58,130 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:30:58,131 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:30:58,131 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse5 (= ~a12~0 8)) (.cse7 (= ~a17~0 1)) (.cse2 (= ~a16~0 6)) (.cse1 (not (= ~a8~0 13))) (.cse6 (= ~a20~0 1)) (.cse8 (not (= ~a7~0 1))) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse5 .cse6 (= ~a16~0 4) .cse7) (and .cse4 .cse5 .cse6 .cse8 .cse7) (and .cse2 .cse1 .cse8) (and .cse0 .cse8) (and .cse1 .cse6 .cse8) (and .cse0 .cse3))) [2021-10-11 02:30:58,131 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:30:58,131 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:30:58,131 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:30:58,132 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:30:58,132 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:30:58,132 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:30:58,132 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:30:58,132 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:30:58,132 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:30:58,132 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:30:58,132 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:30:58,133 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:30:58,133 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:30:58,133 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:30:58,133 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:30:58,133 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:30:58,133 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:30:58,133 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:30:58,133 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:30:58,134 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:30:58,134 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:30:58,134 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:30:58,134 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:30:58,134 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse4 (= ~a21~0 1)) (.cse5 (= ~a12~0 8)) (.cse7 (= ~a17~0 1)) (.cse2 (= ~a16~0 6)) (.cse1 (not (= ~a8~0 13))) (.cse6 (= ~a20~0 1)) (.cse8 (not (= ~a7~0 1))) (.cse0 (<= ~a16~0 5)) (.cse3 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse4 .cse5 .cse6 (= ~a16~0 4) .cse7) (and .cse4 .cse5 .cse6 .cse8 .cse7) (and .cse2 .cse1 .cse8) (and .cse0 .cse8) (and .cse1 .cse6 .cse8) (and .cse0 .cse3))) [2021-10-11 02:30:58,134 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:30:58,135 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 510) no Hoare annotation was computed. [2021-10-11 02:30:58,135 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:30:58,135 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:30:58,135 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:30:58,135 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:30:58,135 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:30:58,135 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:30:58,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:58 BoogieIcfgContainer [2021-10-11 02:30:58,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:58,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:58,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:58,175 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:58,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:48" (3/4) ... [2021-10-11 02:30:58,179 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:30:58,216 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2021-10-11 02:30:58,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:30:58,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:30:58,222 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:30:58,395 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3ff9800-bc0b-4bca-85a5-a656aa98e5f9/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:30:58,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:58,397 INFO L168 Benchmark]: Toolchain (without parser) took 13410.79 ms. Allocated memory was 109.1 MB in the beginning and 371.2 MB in the end (delta: 262.1 MB). Free memory was 74.3 MB in the beginning and 221.3 MB in the end (delta: -147.0 MB). Peak memory consumption was 115.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,397 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:58,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.13 ms. Allocated memory is still 109.1 MB. Free memory was 74.0 MB in the beginning and 66.2 MB in the end (delta: 7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,398 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.23 ms. Allocated memory is still 109.1 MB. Free memory was 66.2 MB in the beginning and 60.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,399 INFO L168 Benchmark]: Boogie Preprocessor took 84.39 ms. Allocated memory is still 109.1 MB. Free memory was 60.3 MB in the beginning and 55.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,399 INFO L168 Benchmark]: RCFGBuilder took 2204.16 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 55.7 MB in the beginning and 104.9 MB in the end (delta: -49.2 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,400 INFO L168 Benchmark]: TraceAbstraction took 10142.71 ms. Allocated memory was 159.4 MB in the beginning and 371.2 MB in the end (delta: 211.8 MB). Free memory was 104.9 MB in the beginning and 237.0 MB in the end (delta: -132.2 MB). Peak memory consumption was 78.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,400 INFO L168 Benchmark]: Witness Printer took 222.43 ms. Allocated memory is still 371.2 MB. Free memory was 237.0 MB in the beginning and 221.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:58,402 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 109.1 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 647.13 ms. Allocated memory is still 109.1 MB. Free memory was 74.0 MB in the beginning and 66.2 MB in the end (delta: 7.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.23 ms. Allocated memory is still 109.1 MB. Free memory was 66.2 MB in the beginning and 60.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 84.39 ms. Allocated memory is still 109.1 MB. Free memory was 60.3 MB in the beginning and 55.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2204.16 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 55.7 MB in the beginning and 104.9 MB in the end (delta: -49.2 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10142.71 ms. Allocated memory was 159.4 MB in the beginning and 371.2 MB in the end (delta: 211.8 MB). Free memory was 104.9 MB in the beginning and 237.0 MB in the end (delta: -132.2 MB). Peak memory consumption was 78.6 MB. Max. memory is 16.1 GB. * Witness Printer took 222.43 ms. Allocated memory is still 371.2 MB. Free memory was 237.0 MB in the beginning and 221.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 510]: 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 && !(a8 == 13)) || (a16 == 6 && a21 <= 0)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && !(a8 == 13)) && !(a7 == 1))) || (a16 <= 5 && !(a7 == 1))) || ((!(a8 == 13) && a20 == 1) && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((a16 <= 5 && !(a8 == 13)) || (a16 == 6 && a21 <= 0)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && a16 == 4) && a17 == 1)) || ((((a21 == 1 && a12 == 8) && a20 == 1) && !(a7 == 1)) && a17 == 1)) || ((a16 == 6 && !(a8 == 13)) && !(a7 == 1))) || (a16 <= 5 && !(a7 == 1))) || ((!(a8 == 13) && a20 == 1) && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 462 SDtfs, 1016 SDslu, 56 SDs, 0 SdLazy, 2507 SolverSat, 722 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 801 GetRequests, 778 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred 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: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 923 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 177 HoareAnnotationTreeSize, 3 FomulaSimplifications, 4986 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 570 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1620 NumberOfCodeBlocks, 1620 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1991 ConstructedInterpolants, 0 QuantifiedInterpolants, 969774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 894 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 1648/1750 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...