./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label34.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_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/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_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/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_f61ced23-c198-49b6-96aa-8da5e2e68f73/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 7d383be3b45c63d6b7da78462a154ab6c2d74592 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:28:52,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:52,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:52,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:52,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:52,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:52,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:52,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:52,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:52,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:52,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:52,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:52,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:52,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:52,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:52,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:52,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:52,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:52,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:52,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:52,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:52,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:52,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:52,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:52,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:52,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:52,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:52,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:52,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:52,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:52,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:52,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:52,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:52,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:52,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:52,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:52,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:52,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:52,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:52,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:52,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:52,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:52,200 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:52,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:52,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:52,202 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:52,202 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:52,202 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:52,202 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:52,203 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:52,203 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:52,203 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:52,204 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:52,204 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:52,205 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:52,205 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:52,205 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:52,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:52,206 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:52,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:52,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:52,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:52,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:52,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:52,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:52,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:52,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:52,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:52,208 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:52,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:52,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:52,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:52,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:52,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:52,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:52,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:52,211 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:52,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:52,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:52,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:52,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:52,212 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_f61ced23-c198-49b6-96aa-8da5e2e68f73/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d383be3b45c63d6b7da78462a154ab6c2d74592 [2021-10-11 02:28:52,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:52,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:52,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:52,563 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:52,564 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:52,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem01_label34.c [2021-10-11 02:28:52,670 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/data/4a55d85a6/5a499f7636eb406d81bf4da99970051b/FLAG5336d978b [2021-10-11 02:28:53,262 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:53,262 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/sv-benchmarks/c/eca-rers2012/Problem01_label34.c [2021-10-11 02:28:53,291 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/data/4a55d85a6/5a499f7636eb406d81bf4da99970051b/FLAG5336d978b [2021-10-11 02:28:53,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/data/4a55d85a6/5a499f7636eb406d81bf4da99970051b [2021-10-11 02:28:53,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:53,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:53,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:53,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:53,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:53,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfcbf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:53, skipping insertion in model container [2021-10-11 02:28:53,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:53" (1/1) ... [2021-10-11 02:28:53,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:53,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:54,075 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_f61ced23-c198-49b6-96aa-8da5e2e68f73/sv-benchmarks/c/eca-rers2012/Problem01_label34.c[18605,18618] [2021-10-11 02:28:54,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:54,135 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:54,269 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_f61ced23-c198-49b6-96aa-8da5e2e68f73/sv-benchmarks/c/eca-rers2012/Problem01_label34.c[18605,18618] [2021-10-11 02:28:54,296 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:54,316 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:54,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54 WrapperNode [2021-10-11 02:28:54,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:54,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:54,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:54,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:54,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... [2021-10-11 02:28:54,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... [2021-10-11 02:28:54,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:54,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:54,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:54,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:54,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... [2021-10-11 02:28:54,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... [2021-10-11 02:28:54,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... [2021-10-11 02:28:54,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... [2021-10-11 02:28:54,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... [2021-10-11 02:28:54,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... [2021-10-11 02:28:54,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... [2021-10-11 02:28:54,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:54,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:54,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:54,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:54,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/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 02:28:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:54,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:54,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:56,840 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:56,840 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:28:56,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:56 BoogieIcfgContainer [2021-10-11 02:28:56,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:56,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:56,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:56,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:56,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:53" (1/3) ... [2021-10-11 02:28:56,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dad7d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:56, skipping insertion in model container [2021-10-11 02:28:56,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:54" (2/3) ... [2021-10-11 02:28:56,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dad7d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:56, skipping insertion in model container [2021-10-11 02:28:56,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:56" (3/3) ... [2021-10-11 02:28:56,856 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label34.c [2021-10-11 02:28:56,874 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:56,878 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:28:56,890 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:28:56,918 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:56,919 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:56,919 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:56,919 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:56,919 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:56,919 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:56,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:56,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2021-10-11 02:28:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-11 02:28:56,943 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:56,944 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 02:28:56,944 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:56,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:56,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1806910808, now seen corresponding path program 1 times [2021-10-11 02:28:56,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:56,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684526451] [2021-10-11 02:28:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:57,622 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 02:28:57,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684526451] [2021-10-11 02:28:57,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:57,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:57,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521628585] [2021-10-11 02:28:57,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:57,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:57,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:57,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:57,654 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2021-10-11 02:28:58,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:58,387 INFO L93 Difference]: Finished difference Result 297 states and 569 transitions. [2021-10-11 02:28:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:58,388 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2021-10-11 02:28:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:58,420 INFO L225 Difference]: With dead ends: 297 [2021-10-11 02:28:58,421 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:28:58,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:58,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:28:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2021-10-11 02:28:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:28:58,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 336 transitions. [2021-10-11 02:28:58,503 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 336 transitions. Word has length 71 [2021-10-11 02:28:58,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:58,504 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 336 transitions. [2021-10-11 02:28:58,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 336 transitions. [2021-10-11 02:28:58,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-11 02:28:58,514 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:58,515 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:58,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:58,515 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:58,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:58,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1703775943, now seen corresponding path program 1 times [2021-10-11 02:28:58,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:58,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437466092] [2021-10-11 02:28:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:58,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437466092] [2021-10-11 02:28:58,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:58,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:58,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226474324] [2021-10-11 02:28:58,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:58,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:58,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:58,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:58,772 INFO L87 Difference]: Start difference. First operand 216 states and 336 transitions. Second operand 4 states. [2021-10-11 02:28:59,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,504 INFO L93 Difference]: Finished difference Result 500 states and 848 transitions. [2021-10-11 02:28:59,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:59,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2021-10-11 02:28:59,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,509 INFO L225 Difference]: With dead ends: 500 [2021-10-11 02:28:59,509 INFO L226 Difference]: Without dead ends: 287 [2021-10-11 02:28:59,516 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 02:28:59,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-11 02:28:59,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-10-11 02:28:59,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2021-10-11 02:28:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 293 transitions. [2021-10-11 02:28:59,543 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 293 transitions. Word has length 78 [2021-10-11 02:28:59,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,545 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 293 transitions. [2021-10-11 02:28:59,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 293 transitions. [2021-10-11 02:28:59,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:28:59,550 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:28:59,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:59,553 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:59,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,555 INFO L82 PathProgramCache]: Analyzing trace with hash 350100599, now seen corresponding path program 1 times [2021-10-11 02:28:59,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888075273] [2021-10-11 02:28:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:59,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888075273] [2021-10-11 02:28:59,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:59,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129007722] [2021-10-11 02:28:59,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:59,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:59,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:59,641 INFO L87 Difference]: Start difference. First operand 216 states and 293 transitions. Second operand 4 states. [2021-10-11 02:29:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:00,218 INFO L93 Difference]: Finished difference Result 573 states and 802 transitions. [2021-10-11 02:29:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:00,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2021-10-11 02:29:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:00,223 INFO L225 Difference]: With dead ends: 573 [2021-10-11 02:29:00,224 INFO L226 Difference]: Without dead ends: 358 [2021-10-11 02:29:00,226 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 02:29:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-10-11 02:29:00,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-10-11 02:29:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2021-10-11 02:29:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 483 transitions. [2021-10-11 02:29:00,245 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 483 transitions. Word has length 86 [2021-10-11 02:29:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:00,245 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 483 transitions. [2021-10-11 02:29:00,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 483 transitions. [2021-10-11 02:29:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-10-11 02:29:00,247 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:00,247 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 02:29:00,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:29:00,248 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:00,248 INFO L82 PathProgramCache]: Analyzing trace with hash -785766091, now seen corresponding path program 1 times [2021-10-11 02:29:00,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:00,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984919160] [2021-10-11 02:29:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:00,319 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 02:29:00,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984919160] [2021-10-11 02:29:00,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:00,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:00,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253359079] [2021-10-11 02:29:00,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:00,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:00,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:00,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:00,322 INFO L87 Difference]: Start difference. First operand 358 states and 483 transitions. Second operand 3 states. [2021-10-11 02:29:00,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:00,711 INFO L93 Difference]: Finished difference Result 999 states and 1339 transitions. [2021-10-11 02:29:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:00,712 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2021-10-11 02:29:00,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:00,716 INFO L225 Difference]: With dead ends: 999 [2021-10-11 02:29:00,716 INFO L226 Difference]: Without dead ends: 642 [2021-10-11 02:29:00,717 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 02:29:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-10-11 02:29:00,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 571. [2021-10-11 02:29:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2021-10-11 02:29:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 778 transitions. [2021-10-11 02:29:00,754 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 778 transitions. Word has length 111 [2021-10-11 02:29:00,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:00,754 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 778 transitions. [2021-10-11 02:29:00,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:00,755 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 778 transitions. [2021-10-11 02:29:00,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-11 02:29:00,757 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:00,757 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-10-11 02:29:00,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:29:00,757 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:00,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:00,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1896309305, now seen corresponding path program 1 times [2021-10-11 02:29:00,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:00,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828100240] [2021-10-11 02:29:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-10-11 02:29:00,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828100240] [2021-10-11 02:29:00,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:00,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:29:00,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782694888] [2021-10-11 02:29:00,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:00,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:00,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:00,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:00,837 INFO L87 Difference]: Start difference. First operand 571 states and 778 transitions. Second operand 4 states. [2021-10-11 02:29:01,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:01,343 INFO L93 Difference]: Finished difference Result 1283 states and 1752 transitions. [2021-10-11 02:29:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:01,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2021-10-11 02:29:01,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:01,348 INFO L225 Difference]: With dead ends: 1283 [2021-10-11 02:29:01,348 INFO L226 Difference]: Without dead ends: 713 [2021-10-11 02:29:01,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:01,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-10-11 02:29:01,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 642. [2021-10-11 02:29:01,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2021-10-11 02:29:01,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 857 transitions. [2021-10-11 02:29:01,370 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 857 transitions. Word has length 120 [2021-10-11 02:29:01,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:01,370 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 857 transitions. [2021-10-11 02:29:01,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:01,370 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 857 transitions. [2021-10-11 02:29:01,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-10-11 02:29:01,372 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:01,373 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:01,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:29:01,373 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:01,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1126657194, now seen corresponding path program 1 times [2021-10-11 02:29:01,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:01,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617382260] [2021-10-11 02:29:01,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:29:01,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617382260] [2021-10-11 02:29:01,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:01,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:01,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913773511] [2021-10-11 02:29:01,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:01,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:01,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:01,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:01,503 INFO L87 Difference]: Start difference. First operand 642 states and 857 transitions. Second operand 4 states. [2021-10-11 02:29:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:02,069 INFO L93 Difference]: Finished difference Result 1496 states and 1975 transitions. [2021-10-11 02:29:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:02,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2021-10-11 02:29:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:02,075 INFO L225 Difference]: With dead ends: 1496 [2021-10-11 02:29:02,075 INFO L226 Difference]: Without dead ends: 855 [2021-10-11 02:29:02,076 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 02:29:02,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-10-11 02:29:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 784. [2021-10-11 02:29:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:29:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1021 transitions. [2021-10-11 02:29:02,097 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1021 transitions. Word has length 134 [2021-10-11 02:29:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:02,097 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1021 transitions. [2021-10-11 02:29:02,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1021 transitions. [2021-10-11 02:29:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-10-11 02:29:02,100 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:02,101 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:29:02,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:29:02,101 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:02,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1220402177, now seen corresponding path program 1 times [2021-10-11 02:29:02,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:02,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19524494] [2021-10-11 02:29:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:29:02,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19524494] [2021-10-11 02:29:02,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:02,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:02,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538009246] [2021-10-11 02:29:02,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:02,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:02,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:02,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:02,248 INFO L87 Difference]: Start difference. First operand 784 states and 1021 transitions. Second operand 3 states. [2021-10-11 02:29:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:02,587 INFO L93 Difference]: Finished difference Result 1709 states and 2194 transitions. [2021-10-11 02:29:02,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:02,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2021-10-11 02:29:02,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:02,594 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:29:02,594 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:29:02,596 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 02:29:02,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:29:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 784. [2021-10-11 02:29:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2021-10-11 02:29:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1015 transitions. [2021-10-11 02:29:02,618 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1015 transitions. Word has length 167 [2021-10-11 02:29:02,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:02,620 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1015 transitions. [2021-10-11 02:29:02,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:02,621 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1015 transitions. [2021-10-11 02:29:02,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-10-11 02:29:02,624 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:02,624 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:29:02,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:29:02,625 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:02,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:02,625 INFO L82 PathProgramCache]: Analyzing trace with hash 827194143, now seen corresponding path program 1 times [2021-10-11 02:29:02,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:02,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004918548] [2021-10-11 02:29:02,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 225 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-11 02:29:02,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004918548] [2021-10-11 02:29:02,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:02,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:29:02,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502608569] [2021-10-11 02:29:02,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:02,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:02,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:02,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:29:02,834 INFO L87 Difference]: Start difference. First operand 784 states and 1015 transitions. Second operand 3 states. [2021-10-11 02:29:03,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:03,193 INFO L93 Difference]: Finished difference Result 1709 states and 2182 transitions. [2021-10-11 02:29:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:03,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2021-10-11 02:29:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:03,200 INFO L225 Difference]: With dead ends: 1709 [2021-10-11 02:29:03,200 INFO L226 Difference]: Without dead ends: 926 [2021-10-11 02:29:03,202 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 02:29:03,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2021-10-11 02:29:03,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2021-10-11 02:29:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 855 states. [2021-10-11 02:29:03,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1055 transitions. [2021-10-11 02:29:03,224 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1055 transitions. Word has length 210 [2021-10-11 02:29:03,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:03,226 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1055 transitions. [2021-10-11 02:29:03,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:03,226 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1055 transitions. [2021-10-11 02:29:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-10-11 02:29:03,230 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:03,230 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:29:03,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:29:03,231 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:03,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1307991104, now seen corresponding path program 1 times [2021-10-11 02:29:03,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:03,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672286753] [2021-10-11 02:29:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 235 proven. 35 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-10-11 02:29:03,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672286753] [2021-10-11 02:29:03,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364002672] [2021-10-11 02:29:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/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 02:29:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:03,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:03,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-10-11 02:29:04,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:04,515 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-10-11 02:29:04,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:04,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:29:04,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003219924] [2021-10-11 02:29:04,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:04,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:04,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:04,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:04,519 INFO L87 Difference]: Start difference. First operand 855 states and 1055 transitions. Second operand 3 states. [2021-10-11 02:29:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:04,915 INFO L93 Difference]: Finished difference Result 1993 states and 2470 transitions. [2021-10-11 02:29:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:04,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2021-10-11 02:29:04,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:04,923 INFO L225 Difference]: With dead ends: 1993 [2021-10-11 02:29:04,923 INFO L226 Difference]: Without dead ends: 1139 [2021-10-11 02:29:04,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 443 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 02:29:04,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-10-11 02:29:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 997. [2021-10-11 02:29:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2021-10-11 02:29:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1253 transitions. [2021-10-11 02:29:04,955 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1253 transitions. Word has length 223 [2021-10-11 02:29:04,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:04,956 INFO L481 AbstractCegarLoop]: Abstraction has 997 states and 1253 transitions. [2021-10-11 02:29:04,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:04,956 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1253 transitions. [2021-10-11 02:29:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-10-11 02:29:04,960 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:04,961 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:29:05,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-11 02:29:05,172 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:05,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1135214552, now seen corresponding path program 1 times [2021-10-11 02:29:05,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:05,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815764497] [2021-10-11 02:29:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 260 proven. 55 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-10-11 02:29:05,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815764497] [2021-10-11 02:29:05,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632829272] [2021-10-11 02:29:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/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 02:29:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:05,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:05,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:29:05,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:06,129 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-10-11 02:29:06,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:06,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:29:06,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176150245] [2021-10-11 02:29:06,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:06,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:06,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:06,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:06,133 INFO L87 Difference]: Start difference. First operand 997 states and 1253 transitions. Second operand 4 states. [2021-10-11 02:29:06,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:06,714 INFO L93 Difference]: Finished difference Result 2703 states and 3425 transitions. [2021-10-11 02:29:06,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:06,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2021-10-11 02:29:06,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:06,724 INFO L225 Difference]: With dead ends: 2703 [2021-10-11 02:29:06,724 INFO L226 Difference]: Without dead ends: 1707 [2021-10-11 02:29:06,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:06,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-11 02:29:06,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1068. [2021-10-11 02:29:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2021-10-11 02:29:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1333 transitions. [2021-10-11 02:29:06,764 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1333 transitions. Word has length 232 [2021-10-11 02:29:06,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:06,765 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1333 transitions. [2021-10-11 02:29:06,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:06,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1333 transitions. [2021-10-11 02:29:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-10-11 02:29:06,769 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:06,770 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-10-11 02:29:06,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-11 02:29:06,989 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:06,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:06,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1646206064, now seen corresponding path program 1 times [2021-10-11 02:29:06,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:06,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783640986] [2021-10-11 02:29:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 256 proven. 142 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-11 02:29:07,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783640986] [2021-10-11 02:29:07,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731113627] [2021-10-11 02:29:07,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:07,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:29:07,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:29:07,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-10-11 02:29:08,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:08,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2021-10-11 02:29:08,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162440110] [2021-10-11 02:29:08,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:29:08,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:08,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:29:08,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:08,075 INFO L87 Difference]: Start difference. First operand 1068 states and 1333 transitions. Second operand 3 states. [2021-10-11 02:29:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:08,418 INFO L93 Difference]: Finished difference Result 2133 states and 2664 transitions. [2021-10-11 02:29:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:29:08,419 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2021-10-11 02:29:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:08,420 INFO L225 Difference]: With dead ends: 2133 [2021-10-11 02:29:08,420 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:08,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 481 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:29:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:08,423 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2021-10-11 02:29:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:08,424 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:08,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:29:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:08,424 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:08,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-11 02:29:08,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:08,896 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-10-11 02:29:09,053 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2021-10-11 02:29:09,055 INFO L262 CegarLoopResult]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-11 02:29:09,056 INFO L262 CegarLoopResult]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-11 02:29:09,056 INFO L262 CegarLoopResult]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-11 02:29:09,056 INFO L262 CegarLoopResult]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:29:09,056 INFO L262 CegarLoopResult]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-11 02:29:09,056 INFO L262 CegarLoopResult]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-11 02:29:09,056 INFO L262 CegarLoopResult]: For program point L501(line 501) no Hoare annotation was computed. [2021-10-11 02:29:09,056 INFO L262 CegarLoopResult]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-11 02:29:09,057 INFO L262 CegarLoopResult]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-11 02:29:09,057 INFO L262 CegarLoopResult]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-11 02:29:09,057 INFO L262 CegarLoopResult]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-11 02:29:09,057 INFO L262 CegarLoopResult]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-11 02:29:09,057 INFO L262 CegarLoopResult]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-11 02:29:09,057 INFO L262 CegarLoopResult]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-11 02:29:09,057 INFO L262 CegarLoopResult]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-11 02:29:09,057 INFO L262 CegarLoopResult]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-11 02:29:09,058 INFO L262 CegarLoopResult]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-11 02:29:09,058 INFO L262 CegarLoopResult]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-11 02:29:09,058 INFO L262 CegarLoopResult]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-11 02:29:09,058 INFO L262 CegarLoopResult]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-11 02:29:09,058 INFO L262 CegarLoopResult]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-11 02:29:09,058 INFO L262 CegarLoopResult]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-11 02:29:09,058 INFO L262 CegarLoopResult]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-11 02:29:09,058 INFO L262 CegarLoopResult]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-11 02:29:09,059 INFO L262 CegarLoopResult]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-11 02:29:09,059 INFO L262 CegarLoopResult]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-11 02:29:09,059 INFO L262 CegarLoopResult]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-11 02:29:09,059 INFO L262 CegarLoopResult]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-11 02:29:09,059 INFO L262 CegarLoopResult]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-11 02:29:09,059 INFO L262 CegarLoopResult]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-11 02:29:09,059 INFO L262 CegarLoopResult]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-11 02:29:09,059 INFO L262 CegarLoopResult]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-11 02:29:09,060 INFO L262 CegarLoopResult]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-11 02:29:09,060 INFO L262 CegarLoopResult]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-11 02:29:09,060 INFO L262 CegarLoopResult]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-11 02:29:09,060 INFO L262 CegarLoopResult]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-11 02:29:09,060 INFO L262 CegarLoopResult]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-11 02:29:09,060 INFO L262 CegarLoopResult]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-11 02:29:09,060 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:09,060 INFO L262 CegarLoopResult]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-11 02:29:09,061 INFO L262 CegarLoopResult]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-11 02:29:09,061 INFO L262 CegarLoopResult]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-11 02:29:09,061 INFO L258 CegarLoopResult]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1)) (.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse2 (<= ~a16~0 5)) (.cse4 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and (< 13 ~a8~0) .cse2) (and .cse3 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse0 (= ~a16~0 4) (= ~a17~0 1)) (and .cse3 .cse1 (<= 15 ~a8~0)) (and .cse2 .cse1) (and .cse2 .cse4))) [2021-10-11 02:29:09,061 INFO L262 CegarLoopResult]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-11 02:29:09,061 INFO L262 CegarLoopResult]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-11 02:29:09,062 INFO L262 CegarLoopResult]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-11 02:29:09,062 INFO L262 CegarLoopResult]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-11 02:29:09,062 INFO L262 CegarLoopResult]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-11 02:29:09,062 INFO L262 CegarLoopResult]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-11 02:29:09,062 INFO L262 CegarLoopResult]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-11 02:29:09,062 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:09,062 INFO L262 CegarLoopResult]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-11 02:29:09,062 INFO L265 CegarLoopResult]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-11 02:29:09,063 INFO L262 CegarLoopResult]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-11 02:29:09,063 INFO L262 CegarLoopResult]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-11 02:29:09,063 INFO L262 CegarLoopResult]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-11 02:29:09,063 INFO L262 CegarLoopResult]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-11 02:29:09,063 INFO L262 CegarLoopResult]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-11 02:29:09,063 INFO L262 CegarLoopResult]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-11 02:29:09,063 INFO L262 CegarLoopResult]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-11 02:29:09,063 INFO L262 CegarLoopResult]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-11 02:29:09,063 INFO L262 CegarLoopResult]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-11 02:29:09,064 INFO L262 CegarLoopResult]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-11 02:29:09,064 INFO L262 CegarLoopResult]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-11 02:29:09,064 INFO L262 CegarLoopResult]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-11 02:29:09,064 INFO L262 CegarLoopResult]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-11 02:29:09,064 INFO L258 CegarLoopResult]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse0 (= ~a20~0 1)) (.cse3 (= ~a16~0 6)) (.cse1 (not (= ~a7~0 1))) (.cse2 (<= ~a16~0 5)) (.cse4 (<= ~a21~0 0))) (or (and .cse0 .cse1) (and (< 13 ~a8~0) .cse2) (and .cse3 .cse4) (and (= ~a21~0 1) (= ~a12~0 8) (= ~a8~0 13) .cse0 (= ~a16~0 4) (= ~a17~0 1)) (and .cse3 .cse1 (<= 15 ~a8~0)) (and .cse2 .cse1) (and .cse2 .cse4))) [2021-10-11 02:29:09,064 INFO L262 CegarLoopResult]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-11 02:29:09,065 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 501) no Hoare annotation was computed. [2021-10-11 02:29:09,065 INFO L262 CegarLoopResult]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-11 02:29:09,065 INFO L262 CegarLoopResult]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-11 02:29:09,065 INFO L262 CegarLoopResult]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2021-10-11 02:29:09,065 INFO L262 CegarLoopResult]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-11 02:29:09,065 INFO L262 CegarLoopResult]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-11 02:29:09,065 INFO L262 CegarLoopResult]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-11 02:29:09,065 INFO L262 CegarLoopResult]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-11 02:29:09,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:09 BoogieIcfgContainer [2021-10-11 02:29:09,084 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:09,085 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:09,085 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:09,085 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:09,086 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:56" (3/4) ... [2021-10-11 02:29:09,089 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:09,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2021-10-11 02:29:09,113 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:29:09,115 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:29:09,116 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:29:09,275 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f61ced23-c198-49b6-96aa-8da5e2e68f73/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:09,276 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:09,277 INFO L168 Benchmark]: Toolchain (without parser) took 15647.00 ms. Allocated memory was 98.6 MB in the beginning and 400.6 MB in the end (delta: 302.0 MB). Free memory was 55.7 MB in the beginning and 223.4 MB in the end (delta: -167.7 MB). Peak memory consumption was 136.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:09,277 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 98.6 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:09,279 INFO L168 Benchmark]: CACSL2BoogieTranslator took 685.88 ms. Allocated memory is still 98.6 MB. Free memory was 55.6 MB in the beginning and 57.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:09,280 INFO L168 Benchmark]: Boogie Procedure Inliner took 102.32 ms. Allocated memory is still 98.6 MB. Free memory was 57.4 MB in the beginning and 51.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:09,280 INFO L168 Benchmark]: Boogie Preprocessor took 65.09 ms. Allocated memory is still 98.6 MB. Free memory was 51.5 MB in the beginning and 47.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:09,281 INFO L168 Benchmark]: RCFGBuilder took 2359.04 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 47.0 MB in the beginning and 43.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:09,281 INFO L168 Benchmark]: TraceAbstraction took 12235.73 ms. Allocated memory was 125.8 MB in the beginning and 400.6 MB in the end (delta: 274.7 MB). Free memory was 43.5 MB in the beginning and 238.3 MB in the end (delta: -194.7 MB). Peak memory consumption was 80.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:09,281 INFO L168 Benchmark]: Witness Printer took 191.13 ms. Allocated memory is still 400.6 MB. Free memory was 238.3 MB in the beginning and 223.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:09,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 98.6 MB. Free memory is still 74.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 685.88 ms. Allocated memory is still 98.6 MB. Free memory was 55.6 MB in the beginning and 57.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 102.32 ms. Allocated memory is still 98.6 MB. Free memory was 57.4 MB in the beginning and 51.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.09 ms. Allocated memory is still 98.6 MB. Free memory was 51.5 MB in the beginning and 47.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2359.04 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 47.0 MB in the beginning and 43.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12235.73 ms. Allocated memory was 125.8 MB in the beginning and 400.6 MB in the end (delta: 274.7 MB). Free memory was 43.5 MB in the beginning and 238.3 MB in the end (delta: -194.7 MB). Peak memory consumption was 80.0 MB. Max. memory is 16.1 GB. * Witness Printer took 191.13 ms. Allocated memory is still 400.6 MB. Free memory was 238.3 MB in the beginning and 223.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 501]: 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: ((((((a20 == 1 && !(a7 == 1)) || (13 < a8 && a16 <= 5)) || (a16 == 6 && a21 <= 0)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((a20 == 1 && !(a7 == 1)) || (13 < a8 && a16 <= 5)) || (a16 == 6 && a21 <= 0)) || (((((a21 == 1 && a12 == 8) && a8 == 13) && a20 == 1) && a16 == 4) && a17 == 1)) || ((a16 == 6 && !(a7 == 1)) && 15 <= a8)) || (a16 <= 5 && !(a7 == 1))) || (a16 <= 5 && a21 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.7s, OverallIterations: 11, TraceHistogramMax: 8, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 483 SDtfs, 1090 SDslu, 70 SDs, 0 SdLazy, 2936 SolverSat, 721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1429 GetRequests, 1399 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1068occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 1278 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 38 NumberOfFragments, 137 HoareAnnotationTreeSize, 3 FomulaSimplifications, 11656 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 486 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2369 NumberOfCodeBlocks, 2369 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 3048 ConstructedInterpolants, 0 QuantifiedInterpolants, 1747108 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1610 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 4132/4364 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...