./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.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_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/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_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/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_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/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 c3bec4a19ad486e7769a1ae863b766e21c94d89f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:23:45,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:45,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:45,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:45,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:45,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:45,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:45,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:45,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:45,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:45,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:45,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:45,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:45,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:45,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:45,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:45,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:45,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:45,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:45,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:46,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:46,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:46,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:46,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:46,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:46,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:46,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:46,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:46,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:46,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:46,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:46,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:46,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:46,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:46,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:46,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:46,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:46,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:46,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:46,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:46,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:46,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:46,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:46,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:46,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:46,096 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:46,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:46,097 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:46,097 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:46,097 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:46,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:46,098 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:46,099 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:46,100 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:46,100 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:46,100 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:46,101 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:46,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:46,102 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:46,102 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:46,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:46,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:46,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:46,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:46,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:46,104 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:46,104 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:46,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:46,105 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:46,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:46,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:46,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:46,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:46,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:46,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:46,110 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:46,110 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:46,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:46,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:46,111 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:46,111 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:46,112 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_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3bec4a19ad486e7769a1ae863b766e21c94d89f [2021-10-11 02:23:46,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:46,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:46,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:46,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:46,560 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:46,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2021-10-11 02:23:46,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI/data/237dc11f3/a1850b9566ca47efbd7e4f398fd69061/FLAG20de712c6 [2021-10-11 02:23:47,389 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:47,390 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/sv-benchmarks/c/eca-rers2012/Problem01_label09.c [2021-10-11 02:23:47,409 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI/data/237dc11f3/a1850b9566ca47efbd7e4f398fd69061/FLAG20de712c6 [2021-10-11 02:23:47,610 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI/data/237dc11f3/a1850b9566ca47efbd7e4f398fd69061 [2021-10-11 02:23:47,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:47,615 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:47,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:47,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:47,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:47,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:47" (1/1) ... [2021-10-11 02:23:47,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5a0c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:47, skipping insertion in model container [2021-10-11 02:23:47,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:47" (1/1) ... [2021-10-11 02:23:47,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:47,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:48,351 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_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2021-10-11 02:23:48,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:48,410 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:48,549 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_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/sv-benchmarks/c/eca-rers2012/Problem01_label09.c[20223,20236] [2021-10-11 02:23:48,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:48,599 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:48,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48 WrapperNode [2021-10-11 02:23:48,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:48,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:48,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:48,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:48,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... [2021-10-11 02:23:48,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... [2021-10-11 02:23:48,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:48,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:48,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:48,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:48,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... [2021-10-11 02:23:48,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... [2021-10-11 02:23:48,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... [2021-10-11 02:23:48,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... [2021-10-11 02:23:48,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... [2021-10-11 02:23:48,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... [2021-10-11 02:23:48,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... [2021-10-11 02:23:48,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:48,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:48,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:48,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:48,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/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 02:23:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:48,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:51,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:51,396 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:23:51,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:51 BoogieIcfgContainer [2021-10-11 02:23:51,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:51,403 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:51,403 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:51,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:51,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:47" (1/3) ... [2021-10-11 02:23:51,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145d9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:51, skipping insertion in model container [2021-10-11 02:23:51,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:48" (2/3) ... [2021-10-11 02:23:51,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@145d9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:51, skipping insertion in model container [2021-10-11 02:23:51,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:51" (3/3) ... [2021-10-11 02:23:51,412 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label09.c [2021-10-11 02:23:51,433 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:51,437 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:51,451 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:51,496 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:51,497 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:51,497 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:51,497 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:51,497 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:51,497 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:51,498 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:51,498 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:23:51,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:23:51,536 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:51,537 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 02:23:51,539 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:51,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:51,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1806907480, now seen corresponding path program 1 times [2021-10-11 02:23:51,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:51,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613905400] [2021-10-11 02:23:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:51,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:52,023 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 02:23:52,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613905400] [2021-10-11 02:23:52,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:52,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:52,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089872792] [2021-10-11 02:23:52,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:52,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:52,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:52,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,050 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2021-10-11 02:23:52,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:52,626 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2021-10-11 02:23:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:52,628 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2021-10-11 02:23:52,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:52,643 INFO L225 Difference]: With dead ends: 224 [2021-10-11 02:23:52,644 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:23:52,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:23:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2021-10-11 02:23:52,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2021-10-11 02:23:52,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 259 transitions. [2021-10-11 02:23:52,740 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 259 transitions. Word has length 71 [2021-10-11 02:23:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:52,742 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 259 transitions. [2021-10-11 02:23:52,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 259 transitions. [2021-10-11 02:23:52,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-11 02:23:52,746 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:52,746 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:52,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:52,747 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:52,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1694600766, now seen corresponding path program 1 times [2021-10-11 02:23:52,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:52,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450226502] [2021-10-11 02:23:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:52,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450226502] [2021-10-11 02:23:52,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:52,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:52,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697574022] [2021-10-11 02:23:52,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:52,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:52,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:52,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:52,851 INFO L87 Difference]: Start difference. First operand 145 states and 259 transitions. Second operand 3 states. [2021-10-11 02:23:53,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:53,424 INFO L93 Difference]: Finished difference Result 431 states and 774 transitions. [2021-10-11 02:23:53,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:53,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-10-11 02:23:53,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:53,432 INFO L225 Difference]: With dead ends: 431 [2021-10-11 02:23:53,432 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:23:53,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:53,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:23:53,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-10-11 02:23:53,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-10-11 02:23:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 479 transitions. [2021-10-11 02:23:53,479 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 479 transitions. Word has length 76 [2021-10-11 02:23:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:53,480 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 479 transitions. [2021-10-11 02:23:53,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 479 transitions. [2021-10-11 02:23:53,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:23:53,495 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:53,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:53,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:23:53,497 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:53,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:53,498 INFO L82 PathProgramCache]: Analyzing trace with hash -202232383, now seen corresponding path program 1 times [2021-10-11 02:23:53,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:53,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589405502] [2021-10-11 02:23:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:23:53,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589405502] [2021-10-11 02:23:53,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:53,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:53,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553065034] [2021-10-11 02:23:53,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:53,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:53,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:53,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:53,587 INFO L87 Difference]: Start difference. First operand 287 states and 479 transitions. Second operand 3 states. [2021-10-11 02:23:54,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:54,107 INFO L93 Difference]: Finished difference Result 857 states and 1434 transitions. [2021-10-11 02:23:54,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:54,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2021-10-11 02:23:54,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:54,113 INFO L225 Difference]: With dead ends: 857 [2021-10-11 02:23:54,113 INFO L226 Difference]: Without dead ends: 571 [2021-10-11 02:23:54,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:54,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-11 02:23:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2021-10-11 02:23:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:23:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 883 transitions. [2021-10-11 02:23:54,157 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 883 transitions. Word has length 86 [2021-10-11 02:23:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:54,159 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 883 transitions. [2021-10-11 02:23:54,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:54,160 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 883 transitions. [2021-10-11 02:23:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:23:54,164 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:54,164 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:54,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:23:54,165 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:54,166 INFO L82 PathProgramCache]: Analyzing trace with hash 289054859, now seen corresponding path program 1 times [2021-10-11 02:23:54,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:54,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042144452] [2021-10-11 02:23:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:54,312 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:23:54,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042144452] [2021-10-11 02:23:54,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:54,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:54,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78013133] [2021-10-11 02:23:54,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:54,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:54,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:54,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:54,316 INFO L87 Difference]: Start difference. First operand 571 states and 883 transitions. Second operand 3 states. [2021-10-11 02:23:54,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:54,803 INFO L93 Difference]: Finished difference Result 1567 states and 2438 transitions. [2021-10-11 02:23:54,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:54,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:23:54,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:54,812 INFO L225 Difference]: With dead ends: 1567 [2021-10-11 02:23:54,812 INFO L226 Difference]: Without dead ends: 997 [2021-10-11 02:23:54,813 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 02:23:54,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-10-11 02:23:54,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 713. [2021-10-11 02:23:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2021-10-11 02:23:54,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1044 transitions. [2021-10-11 02:23:54,857 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1044 transitions. Word has length 91 [2021-10-11 02:23:54,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:54,857 INFO L481 AbstractCegarLoop]: Abstraction has 713 states and 1044 transitions. [2021-10-11 02:23:54,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1044 transitions. [2021-10-11 02:23:54,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-10-11 02:23:54,860 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:54,860 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:54,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:23:54,861 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:54,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1324177043, now seen corresponding path program 1 times [2021-10-11 02:23:54,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:54,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914130679] [2021-10-11 02:23:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:54,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914130679] [2021-10-11 02:23:54,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:54,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:54,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517458908] [2021-10-11 02:23:54,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:54,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:54,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:54,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:54,971 INFO L87 Difference]: Start difference. First operand 713 states and 1044 transitions. Second operand 3 states. [2021-10-11 02:23:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:55,544 INFO L93 Difference]: Finished difference Result 2064 states and 3033 transitions. [2021-10-11 02:23:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:55,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2021-10-11 02:23:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:55,556 INFO L225 Difference]: With dead ends: 2064 [2021-10-11 02:23:55,556 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:23:55,558 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 02:23:55,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:23:55,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2021-10-11 02:23:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:23:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1607 transitions. [2021-10-11 02:23:55,616 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1607 transitions. Word has length 94 [2021-10-11 02:23:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:55,617 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1607 transitions. [2021-10-11 02:23:55,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:55,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1607 transitions. [2021-10-11 02:23:55,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 02:23:55,621 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:55,621 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:55,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:23:55,622 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:55,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:55,623 INFO L82 PathProgramCache]: Analyzing trace with hash -720005495, now seen corresponding path program 1 times [2021-10-11 02:23:55,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:55,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012836344] [2021-10-11 02:23:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:23:55,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012836344] [2021-10-11 02:23:55,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:55,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:55,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632796354] [2021-10-11 02:23:55,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:55,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:55,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:55,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:55,690 INFO L87 Difference]: Start difference. First operand 1139 states and 1607 transitions. Second operand 3 states. [2021-10-11 02:23:56,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:56,143 INFO L93 Difference]: Finished difference Result 2419 states and 3373 transitions. [2021-10-11 02:23:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:56,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2021-10-11 02:23:56,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:56,157 INFO L225 Difference]: With dead ends: 2419 [2021-10-11 02:23:56,158 INFO L226 Difference]: Without dead ends: 1210 [2021-10-11 02:23:56,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:56,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-10-11 02:23:56,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1210. [2021-10-11 02:23:56,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1210 states. [2021-10-11 02:23:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1472 transitions. [2021-10-11 02:23:56,204 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1472 transitions. Word has length 98 [2021-10-11 02:23:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:56,213 INFO L481 AbstractCegarLoop]: Abstraction has 1210 states and 1472 transitions. [2021-10-11 02:23:56,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1472 transitions. [2021-10-11 02:23:56,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-11 02:23:56,217 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:56,217 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:56,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:23:56,218 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:56,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:56,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1815689775, now seen corresponding path program 1 times [2021-10-11 02:23:56,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:56,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082363176] [2021-10-11 02:23:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-11 02:23:56,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082363176] [2021-10-11 02:23:56,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:56,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:56,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14481409] [2021-10-11 02:23:56,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:56,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:56,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:56,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:56,352 INFO L87 Difference]: Start difference. First operand 1210 states and 1472 transitions. Second operand 4 states. [2021-10-11 02:23:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:56,926 INFO L93 Difference]: Finished difference Result 2490 states and 3044 transitions. [2021-10-11 02:23:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:56,927 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2021-10-11 02:23:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:56,934 INFO L225 Difference]: With dead ends: 2490 [2021-10-11 02:23:56,934 INFO L226 Difference]: Without dead ends: 1352 [2021-10-11 02:23:56,936 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 02:23:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-11 02:23:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1139. [2021-10-11 02:23:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1139 states. [2021-10-11 02:23:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1352 transitions. [2021-10-11 02:23:56,965 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1352 transitions. Word has length 102 [2021-10-11 02:23:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:56,965 INFO L481 AbstractCegarLoop]: Abstraction has 1139 states and 1352 transitions. [2021-10-11 02:23:56,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:56,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1352 transitions. [2021-10-11 02:23:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:23:56,968 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:56,969 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:56,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:23:56,969 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:56,970 INFO L82 PathProgramCache]: Analyzing trace with hash -785762763, now seen corresponding path program 1 times [2021-10-11 02:23:56,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:56,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700165960] [2021-10-11 02:23:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-11 02:23:57,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700165960] [2021-10-11 02:23:57,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:57,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:57,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629244856] [2021-10-11 02:23:57,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:57,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:57,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:57,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:57,073 INFO L87 Difference]: Start difference. First operand 1139 states and 1352 transitions. Second operand 3 states. [2021-10-11 02:23:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:57,531 INFO L93 Difference]: Finished difference Result 2703 states and 3253 transitions. [2021-10-11 02:23:57,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:57,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:23:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:57,545 INFO L225 Difference]: With dead ends: 2703 [2021-10-11 02:23:57,545 INFO L226 Difference]: Without dead ends: 1636 [2021-10-11 02:23:57,547 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 02:23:57,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-11 02:23:57,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1423. [2021-10-11 02:23:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2021-10-11 02:23:57,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1726 transitions. [2021-10-11 02:23:57,593 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1726 transitions. Word has length 111 [2021-10-11 02:23:57,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:57,593 INFO L481 AbstractCegarLoop]: Abstraction has 1423 states and 1726 transitions. [2021-10-11 02:23:57,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1726 transitions. [2021-10-11 02:23:57,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-10-11 02:23:57,598 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:57,598 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:57,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:23:57,598 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:57,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:57,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1033347089, now seen corresponding path program 1 times [2021-10-11 02:23:57,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:57,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436506073] [2021-10-11 02:23:57,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-11 02:23:57,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436506073] [2021-10-11 02:23:57,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:57,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:57,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041089964] [2021-10-11 02:23:57,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:57,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:57,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:57,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:57,688 INFO L87 Difference]: Start difference. First operand 1423 states and 1726 transitions. Second operand 3 states. [2021-10-11 02:23:58,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:58,078 INFO L93 Difference]: Finished difference Result 2987 states and 3627 transitions. [2021-10-11 02:23:58,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:58,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2021-10-11 02:23:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:58,090 INFO L225 Difference]: With dead ends: 2987 [2021-10-11 02:23:58,090 INFO L226 Difference]: Without dead ends: 1565 [2021-10-11 02:23:58,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:58,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2021-10-11 02:23:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2021-10-11 02:23:58,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2021-10-11 02:23:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1882 transitions. [2021-10-11 02:23:58,139 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1882 transitions. Word has length 127 [2021-10-11 02:23:58,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:58,140 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1882 transitions. [2021-10-11 02:23:58,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:58,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1882 transitions. [2021-10-11 02:23:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-11 02:23:58,146 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:58,147 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:58,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:23:58,147 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:58,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:58,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1365890471, now seen corresponding path program 1 times [2021-10-11 02:23:58,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:58,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654593128] [2021-10-11 02:23:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-11 02:23:58,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654593128] [2021-10-11 02:23:58,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:58,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:58,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253764309] [2021-10-11 02:23:58,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:58,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:58,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:58,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:58,288 INFO L87 Difference]: Start difference. First operand 1565 states and 1882 transitions. Second operand 4 states. [2021-10-11 02:23:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:58,865 INFO L93 Difference]: Finished difference Result 3129 states and 3775 transitions. [2021-10-11 02:23:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:58,866 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2021-10-11 02:23:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:58,877 INFO L225 Difference]: With dead ends: 3129 [2021-10-11 02:23:58,877 INFO L226 Difference]: Without dead ends: 1636 [2021-10-11 02:23:58,880 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 02:23:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-10-11 02:23:58,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1565. [2021-10-11 02:23:58,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2021-10-11 02:23:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1862 transitions. [2021-10-11 02:23:58,925 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1862 transitions. Word has length 131 [2021-10-11 02:23:58,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:58,925 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1862 transitions. [2021-10-11 02:23:58,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:58,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1862 transitions. [2021-10-11 02:23:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-10-11 02:23:58,930 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:58,930 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:23:58,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:23:58,931 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:58,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1083761022, now seen corresponding path program 1 times [2021-10-11 02:23:58,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:58,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877778983] [2021-10-11 02:23:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:59,055 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:23:59,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877778983] [2021-10-11 02:23:59,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:59,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:59,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578533202] [2021-10-11 02:23:59,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:59,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:59,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:59,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:59,058 INFO L87 Difference]: Start difference. First operand 1565 states and 1862 transitions. Second operand 3 states. [2021-10-11 02:23:59,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:59,488 INFO L93 Difference]: Finished difference Result 3413 states and 4101 transitions. [2021-10-11 02:23:59,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:59,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2021-10-11 02:23:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:59,502 INFO L225 Difference]: With dead ends: 3413 [2021-10-11 02:23:59,502 INFO L226 Difference]: Without dead ends: 1778 [2021-10-11 02:23:59,505 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 02:23:59,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2021-10-11 02:23:59,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1636. [2021-10-11 02:23:59,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1636 states. [2021-10-11 02:23:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1636 states to 1636 states and 1946 transitions. [2021-10-11 02:23:59,560 INFO L78 Accepts]: Start accepts. Automaton has 1636 states and 1946 transitions. Word has length 148 [2021-10-11 02:23:59,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:59,562 INFO L481 AbstractCegarLoop]: Abstraction has 1636 states and 1946 transitions. [2021-10-11 02:23:59,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1636 states and 1946 transitions. [2021-10-11 02:23:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-10-11 02:23:59,567 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:59,568 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:23:59,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:23:59,568 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:59,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:59,569 INFO L82 PathProgramCache]: Analyzing trace with hash -274855900, now seen corresponding path program 1 times [2021-10-11 02:23:59,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:59,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453839423] [2021-10-11 02:23:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-11 02:23:59,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453839423] [2021-10-11 02:23:59,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:59,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:23:59,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760099083] [2021-10-11 02:23:59,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:59,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:59,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:59,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:59,725 INFO L87 Difference]: Start difference. First operand 1636 states and 1946 transitions. Second operand 3 states. [2021-10-11 02:24:00,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:00,139 INFO L93 Difference]: Finished difference Result 3342 states and 3975 transitions. [2021-10-11 02:24:00,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:00,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2021-10-11 02:24:00,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:00,152 INFO L225 Difference]: With dead ends: 3342 [2021-10-11 02:24:00,152 INFO L226 Difference]: Without dead ends: 1778 [2021-10-11 02:24:00,155 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 02:24:00,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2021-10-11 02:24:00,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1707. [2021-10-11 02:24:00,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2021-10-11 02:24:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1971 transitions. [2021-10-11 02:24:00,215 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1971 transitions. Word has length 191 [2021-10-11 02:24:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:00,215 INFO L481 AbstractCegarLoop]: Abstraction has 1707 states and 1971 transitions. [2021-10-11 02:24:00,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1971 transitions. [2021-10-11 02:24:00,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-10-11 02:24:00,222 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:00,222 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:00,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-11 02:24:00,223 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:00,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1630202147, now seen corresponding path program 1 times [2021-10-11 02:24:00,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:00,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721953331] [2021-10-11 02:24:00,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 194 proven. 35 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-10-11 02:24:00,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721953331] [2021-10-11 02:24:00,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757026490] [2021-10-11 02:24:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/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 02:24:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:00,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:24:00,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-10-11 02:24:01,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-10-11 02:24:01,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:24:01,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:24:01,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392265684] [2021-10-11 02:24:01,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:01,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:01,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:01,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:01,405 INFO L87 Difference]: Start difference. First operand 1707 states and 1971 transitions. Second operand 3 states. [2021-10-11 02:24:01,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:01,795 INFO L93 Difference]: Finished difference Result 3413 states and 3953 transitions. [2021-10-11 02:24:01,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:01,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2021-10-11 02:24:01,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:01,807 INFO L225 Difference]: With dead ends: 3413 [2021-10-11 02:24:01,807 INFO L226 Difference]: Without dead ends: 1778 [2021-10-11 02:24:01,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 405 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 02:24:01,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2021-10-11 02:24:01,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1565. [2021-10-11 02:24:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2021-10-11 02:24:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1798 transitions. [2021-10-11 02:24:01,863 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1798 transitions. Word has length 204 [2021-10-11 02:24:01,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:01,863 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 1798 transitions. [2021-10-11 02:24:01,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1798 transitions. [2021-10-11 02:24:01,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-11 02:24:01,869 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:01,869 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:02,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-11 02:24:02,095 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:02,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:02,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1501975995, now seen corresponding path program 1 times [2021-10-11 02:24:02,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:02,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905356876] [2021-10-11 02:24:02,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:02,610 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 175 proven. 83 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-11 02:24:02,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905356876] [2021-10-11 02:24:02,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424053000] [2021-10-11 02:24:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/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 02:24:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:02,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:24:02,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:24:03,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:24:03,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:24:03,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 8 [2021-10-11 02:24:03,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769198650] [2021-10-11 02:24:03,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:24:03,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:03,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:24:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:24:03,372 INFO L87 Difference]: Start difference. First operand 1565 states and 1798 transitions. Second operand 4 states. [2021-10-11 02:24:03,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:03,978 INFO L93 Difference]: Finished difference Result 3482 states and 4042 transitions. [2021-10-11 02:24:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:24:03,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 213 [2021-10-11 02:24:03,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:03,979 INFO L225 Difference]: With dead ends: 3482 [2021-10-11 02:24:03,980 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:24:03,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:24:03,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:24:03,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:24:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:24:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:24:03,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 213 [2021-10-11 02:24:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:03,985 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:24:03,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:24:03,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:24:03,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:24:04,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-11 02:24:04,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:24:04,323 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2021-10-11 02:24:04,724 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2021-10-11 02:24:05,057 WARN L197 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2021-10-11 02:24:05,061 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:24:05,061 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:24:05,061 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:24:05,061 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:24:05,062 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:24:05,062 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:24:05,062 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:24:05,062 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:24:05,062 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:24:05,062 INFO L262 CegarLoopResult]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:24:05,063 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:24:05,063 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:24:05,063 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:24:05,064 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:24:05,064 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:24:05,064 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:24:05,064 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:24:05,064 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:24:05,064 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:24:05,065 INFO L262 CegarLoopResult]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:24:05,065 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:24:05,065 INFO L262 CegarLoopResult]: For program point L540(line 540) no Hoare annotation was computed. [2021-10-11 02:24:05,065 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:24:05,065 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:24:05,066 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:24:05,067 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:24:05,067 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:24:05,068 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:24:05,068 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:24:05,068 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:24:05,068 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:24:05,068 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:24:05,068 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:24:05,068 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:24:05,069 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:24:05,069 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:24:05,069 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:24:05,069 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:24:05,069 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:24:05,069 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:24:05,070 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:24:05,071 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:24:05,071 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:24:05,071 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse0 (< 13 ~a8~0)) (.cse3 (let ((.cse8 (<= ~a8~0 13))) (or (and .cse2 .cse8) (and .cse6 .cse8)))) (.cse4 (= ~a16~0 6)) (.cse1 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a7~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse0 .cse5) (<= ~a16~0 4) (and .cse3 .cse2 .cse6) (and .cse4 (<= 15 ~a8~0)) (and .cse1 .cse7 .cse2) (and .cse5 .cse7)))) [2021-10-11 02:24:05,071 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:24:05,072 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:24:05,072 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:24:05,072 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:24:05,072 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:24:05,072 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:24:05,072 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:24:05,072 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:24:05,073 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:24:05,073 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:24:05,073 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:24:05,073 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:24:05,073 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:24:05,073 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:24:05,074 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:24:05,074 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:24:05,074 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:24:05,074 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:24:05,074 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:24:05,074 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:24:05,075 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:24:05,075 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:24:05,075 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:24:05,075 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (= ~a20~0 1)) (.cse6 (= ~a17~0 1))) (let ((.cse0 (< 13 ~a8~0)) (.cse3 (let ((.cse8 (<= ~a8~0 13))) (or (and .cse2 .cse8) (and .cse6 .cse8)))) (.cse4 (= ~a16~0 6)) (.cse1 (= ~a21~0 1)) (.cse5 (<= ~a16~0 5)) (.cse7 (<= ~a7~0 0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4) (and .cse0 .cse5) (<= ~a16~0 4) (and .cse3 .cse2 .cse6) (and .cse4 (<= 15 ~a8~0)) (and .cse1 .cse7 .cse2) (and .cse5 .cse7)))) [2021-10-11 02:24:05,075 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:24:05,076 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 540) no Hoare annotation was computed. [2021-10-11 02:24:05,076 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:24:05,076 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:24:05,076 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:24:05,076 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:24:05,077 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:24:05,077 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:24:05,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:05 BoogieIcfgContainer [2021-10-11 02:24:05,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:05,127 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:05,127 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:05,127 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:05,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:51" (3/4) ... [2021-10-11 02:24:05,131 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:24:05,167 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:24:05,169 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-11 02:24:05,171 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:24:05,174 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:24:05,345 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c5c6f29-a9ae-4a97-8878-96c1cdd0e0f8/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:05,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:05,348 INFO L168 Benchmark]: Toolchain (without parser) took 17731.16 ms. Allocated memory was 111.1 MB in the beginning and 392.2 MB in the end (delta: 281.0 MB). Free memory was 76.3 MB in the beginning and 192.1 MB in the end (delta: -115.9 MB). Peak memory consumption was 164.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:05,349 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 86.0 MB. Free memory was 43.7 MB in the beginning and 61.0 MB in the end (delta: -17.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:05,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 981.73 ms. Allocated memory is still 111.1 MB. Free memory was 76.1 MB in the beginning and 70.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:05,350 INFO L168 Benchmark]: Boogie Procedure Inliner took 142.85 ms. Allocated memory is still 111.1 MB. Free memory was 70.9 MB in the beginning and 65.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:05,350 INFO L168 Benchmark]: Boogie Preprocessor took 87.64 ms. Allocated memory is still 111.1 MB. Free memory was 65.1 MB in the beginning and 60.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:05,351 INFO L168 Benchmark]: RCFGBuilder took 2565.93 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 60.4 MB in the beginning and 74.4 MB in the end (delta: -14.1 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:05,351 INFO L168 Benchmark]: TraceAbstraction took 13723.22 ms. Allocated memory was 153.1 MB in the beginning and 392.2 MB in the end (delta: 239.1 MB). Free memory was 74.4 MB in the beginning and 207.9 MB in the end (delta: -133.4 MB). Peak memory consumption was 105.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:05,352 INFO L168 Benchmark]: Witness Printer took 218.81 ms. Allocated memory is still 392.2 MB. Free memory was 207.9 MB in the beginning and 192.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:05,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 86.0 MB. Free memory was 43.7 MB in the beginning and 61.0 MB in the end (delta: -17.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 981.73 ms. Allocated memory is still 111.1 MB. Free memory was 76.1 MB in the beginning and 70.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 142.85 ms. Allocated memory is still 111.1 MB. Free memory was 70.9 MB in the beginning and 65.1 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.64 ms. Allocated memory is still 111.1 MB. Free memory was 65.1 MB in the beginning and 60.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2565.93 ms. Allocated memory was 111.1 MB in the beginning and 153.1 MB in the end (delta: 41.9 MB). Free memory was 60.4 MB in the beginning and 74.4 MB in the end (delta: -14.1 MB). Peak memory consumption was 50.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13723.22 ms. Allocated memory was 153.1 MB in the beginning and 392.2 MB in the end (delta: 239.1 MB). Free memory was 74.4 MB in the beginning and 207.9 MB in the end (delta: -133.4 MB). Peak memory consumption was 105.6 MB. Max. memory is 16.1 GB. * Witness Printer took 218.81 ms. Allocated memory is still 392.2 MB. Free memory was 207.9 MB in the beginning and 192.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 540]: 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: ((((((((13 < a8 && a21 == 1) && a20 == 1) || (((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a16 == 6)) || (13 < a8 && a16 <= 5)) || a16 <= 4) || ((((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a20 == 1) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a16 <= 5 && a7 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((13 < a8 && a21 == 1) && a20 == 1) || (((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a16 == 6)) || (13 < a8 && a16 <= 5)) || a16 <= 4) || ((((a20 == 1 && a8 <= 13) || (a17 == 1 && a8 <= 13)) && a20 == 1) && a17 == 1)) || (a16 == 6 && 15 <= a8)) || ((a21 == 1 && a7 <= 0) && a20 == 1)) || (a16 <= 5 && a7 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.7s, OverallIterations: 14, TraceHistogramMax: 7, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 674 SDtfs, 1013 SDslu, 66 SDs, 0 SdLazy, 3087 SolverSat, 724 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 872 GetRequests, 846 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1707occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 14 MinimizatonAttempts, 1420 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 71 NumberOfFragments, 173 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3534 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 3 FomulaSimplificationsInter, 448 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 2160 NumberOfCodeBlocks, 2160 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 2559 ConstructedInterpolants, 0 QuantifiedInterpolants, 1333056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1010 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 18 InterpolantComputations, 16 PerfectInterpolantSequences, 2435/2553 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...