./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.01.cil-2.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_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/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_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/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_61a540c8-1cc1-4c14-add4-91e439f9c634/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 9a64ce668dc38bda3e5df5b168a4e471bb7128c4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:55,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:55,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:55,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:55,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:55,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:55,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:55,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:55,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:55,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:55,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:55,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:55,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:55,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:55,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:55,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:55,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:55,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:55,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:55,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:55,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:55,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:55,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:55,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:55,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:55,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:55,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:55,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:55,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:55,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:55,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:55,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:55,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:55,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:55,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:55,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:55,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:55,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:55,417 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:55,418 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:55,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:55,425 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:55,466 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:55,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:55,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:55,469 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:55,469 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:55,469 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:55,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:55,470 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:55,470 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:55,470 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:55,477 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:55,478 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:55,478 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:55,478 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:55,479 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:55,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:55,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:55,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:55,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:55,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:55,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:55,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:55,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:55,481 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:55,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:55,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:55,482 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:55,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:55,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:55,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:55,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:55,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:55,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:55,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:55,486 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:55,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:55,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:55,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:55,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:55,487 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_61a540c8-1cc1-4c14-add4-91e439f9c634/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a64ce668dc38bda3e5df5b168a4e471bb7128c4 [2021-10-11 02:20:55,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:55,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:55,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:55,836 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:55,839 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:55,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2021-10-11 02:20:55,897 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI/data/5207675b5/a7a7653c051d4e858a84cd9c0988e73e/FLAG40735d7ef [2021-10-11 02:20:56,492 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:56,494 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2021-10-11 02:20:56,514 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI/data/5207675b5/a7a7653c051d4e858a84cd9c0988e73e/FLAG40735d7ef [2021-10-11 02:20:56,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI/data/5207675b5/a7a7653c051d4e858a84cd9c0988e73e [2021-10-11 02:20:56,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:56,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:56,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:56,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:56,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:56,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:56,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@275ff629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:56, skipping insertion in model container [2021-10-11 02:20:56,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:56" (1/1) ... [2021-10-11 02:20:56,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:56,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:57,013 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_61a540c8-1cc1-4c14-add4-91e439f9c634/sv-benchmarks/c/systemc/token_ring.01.cil-2.c[366,379] [2021-10-11 02:20:57,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:57,092 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:57,107 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_61a540c8-1cc1-4c14-add4-91e439f9c634/sv-benchmarks/c/systemc/token_ring.01.cil-2.c[366,379] [2021-10-11 02:20:57,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:57,150 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:57,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57 WrapperNode [2021-10-11 02:20:57,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:57,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:57,153 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:57,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:57,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... [2021-10-11 02:20:57,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... [2021-10-11 02:20:57,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:57,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:57,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:57,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:57,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... [2021-10-11 02:20:57,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... [2021-10-11 02:20:57,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... [2021-10-11 02:20:57,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... [2021-10-11 02:20:57,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... [2021-10-11 02:20:57,267 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... [2021-10-11 02:20:57,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... [2021-10-11 02:20:57,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:57,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:57,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:57,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:57,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/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 02:20:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:57,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:58,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:58,639 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-10-11 02:20:58,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:58 BoogieIcfgContainer [2021-10-11 02:20:58,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:58,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:58,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:58,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:58,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:56" (1/3) ... [2021-10-11 02:20:58,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2923fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:58, skipping insertion in model container [2021-10-11 02:20:58,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:57" (2/3) ... [2021-10-11 02:20:58,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2923fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:58, skipping insertion in model container [2021-10-11 02:20:58,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:58" (3/3) ... [2021-10-11 02:20:58,654 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2021-10-11 02:20:58,668 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:58,672 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:20:58,683 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:20:58,718 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:58,718 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:58,718 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:58,718 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:58,718 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:58,718 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:58,719 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:58,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:58,736 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2021-10-11 02:20:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:20:58,749 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:58,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:58,751 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:58,757 INFO L82 PathProgramCache]: Analyzing trace with hash -918662650, now seen corresponding path program 1 times [2021-10-11 02:20:58,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:58,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191407108] [2021-10-11 02:20:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:59,013 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 02:20:59,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191407108] [2021-10-11 02:20:59,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:59,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:59,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348147700] [2021-10-11 02:20:59,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:59,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:59,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:59,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,038 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2021-10-11 02:20:59,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:59,146 INFO L93 Difference]: Finished difference Result 176 states and 271 transitions. [2021-10-11 02:20:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:59,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-10-11 02:20:59,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:59,170 INFO L225 Difference]: With dead ends: 176 [2021-10-11 02:20:59,172 INFO L226 Difference]: Without dead ends: 110 [2021-10-11 02:20:59,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-11 02:20:59,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2021-10-11 02:20:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2021-10-11 02:20:59,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 153 transitions. [2021-10-11 02:20:59,235 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 153 transitions. Word has length 16 [2021-10-11 02:20:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:59,235 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 153 transitions. [2021-10-11 02:20:59,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 153 transitions. [2021-10-11 02:20:59,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:20:59,236 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:59,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:59,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:59,237 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:59,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:59,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2088110117, now seen corresponding path program 1 times [2021-10-11 02:20:59,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:59,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459293117] [2021-10-11 02:20:59,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:59,318 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 02:20:59,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459293117] [2021-10-11 02:20:59,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:59,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:59,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314074886] [2021-10-11 02:20:59,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:59,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:59,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:59,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,328 INFO L87 Difference]: Start difference. First operand 105 states and 153 transitions. Second operand 3 states. [2021-10-11 02:20:59,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:59,405 INFO L93 Difference]: Finished difference Result 283 states and 408 transitions. [2021-10-11 02:20:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:59,406 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-10-11 02:20:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:59,408 INFO L225 Difference]: With dead ends: 283 [2021-10-11 02:20:59,410 INFO L226 Difference]: Without dead ends: 180 [2021-10-11 02:20:59,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-10-11 02:20:59,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 169. [2021-10-11 02:20:59,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2021-10-11 02:20:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 235 transitions. [2021-10-11 02:20:59,442 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 235 transitions. Word has length 16 [2021-10-11 02:20:59,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:59,442 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 235 transitions. [2021-10-11 02:20:59,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:59,443 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 235 transitions. [2021-10-11 02:20:59,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-11 02:20:59,446 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:59,447 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:20:59,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:20:59,447 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:59,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:59,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1548511293, now seen corresponding path program 1 times [2021-10-11 02:20:59,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:59,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116629646] [2021-10-11 02:20:59,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:59,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116629646] [2021-10-11 02:20:59,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:59,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:59,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084600374] [2021-10-11 02:20:59,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:59,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:59,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:59,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,567 INFO L87 Difference]: Start difference. First operand 169 states and 235 transitions. Second operand 3 states. [2021-10-11 02:20:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:59,622 INFO L93 Difference]: Finished difference Result 298 states and 426 transitions. [2021-10-11 02:20:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:59,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2021-10-11 02:20:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:59,626 INFO L225 Difference]: With dead ends: 298 [2021-10-11 02:20:59,626 INFO L226 Difference]: Without dead ends: 197 [2021-10-11 02:20:59,627 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 02:20:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-11 02:20:59,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 183. [2021-10-11 02:20:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2021-10-11 02:20:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 257 transitions. [2021-10-11 02:20:59,643 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 257 transitions. Word has length 29 [2021-10-11 02:20:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:59,643 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 257 transitions. [2021-10-11 02:20:59,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 257 transitions. [2021-10-11 02:20:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-11 02:20:59,646 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:59,646 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:20:59,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:20:59,647 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:59,647 INFO L82 PathProgramCache]: Analyzing trace with hash 824533557, now seen corresponding path program 1 times [2021-10-11 02:20:59,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:59,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923504157] [2021-10-11 02:20:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:59,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923504157] [2021-10-11 02:20:59,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:59,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:20:59,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445246218] [2021-10-11 02:20:59,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:20:59,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:59,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:20:59,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:20:59,734 INFO L87 Difference]: Start difference. First operand 183 states and 257 transitions. Second operand 3 states. [2021-10-11 02:20:59,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:59,778 INFO L93 Difference]: Finished difference Result 309 states and 439 transitions. [2021-10-11 02:20:59,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:20:59,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-10-11 02:20:59,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:59,781 INFO L225 Difference]: With dead ends: 309 [2021-10-11 02:20:59,781 INFO L226 Difference]: Without dead ends: 194 [2021-10-11 02:20:59,785 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 02:20:59,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-11 02:20:59,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2021-10-11 02:20:59,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2021-10-11 02:20:59,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 246 transitions. [2021-10-11 02:20:59,799 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 246 transitions. Word has length 42 [2021-10-11 02:20:59,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:59,800 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 246 transitions. [2021-10-11 02:20:59,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:20:59,800 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 246 transitions. [2021-10-11 02:20:59,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-11 02:20:59,802 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:59,802 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:20:59,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:20:59,803 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:59,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:59,804 INFO L82 PathProgramCache]: Analyzing trace with hash -315818154, now seen corresponding path program 1 times [2021-10-11 02:20:59,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:59,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471030259] [2021-10-11 02:20:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:00,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:21:00,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471030259] [2021-10-11 02:21:00,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:00,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:00,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751830971] [2021-10-11 02:21:00,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:21:00,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:00,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:21:00,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:00,024 INFO L87 Difference]: Start difference. First operand 183 states and 246 transitions. Second operand 5 states. [2021-10-11 02:21:00,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:00,078 INFO L93 Difference]: Finished difference Result 299 states and 407 transitions. [2021-10-11 02:21:00,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:00,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-10-11 02:21:00,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:00,084 INFO L225 Difference]: With dead ends: 299 [2021-10-11 02:21:00,084 INFO L226 Difference]: Without dead ends: 188 [2021-10-11 02:21:00,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:21:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-11 02:21:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 183. [2021-10-11 02:21:00,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2021-10-11 02:21:00,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 240 transitions. [2021-10-11 02:21:00,126 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 240 transitions. Word has length 42 [2021-10-11 02:21:00,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:00,127 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 240 transitions. [2021-10-11 02:21:00,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:21:00,127 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 240 transitions. [2021-10-11 02:21:00,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-11 02:21:00,130 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:00,130 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:21:00,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:21:00,130 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:00,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:00,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2041046082, now seen corresponding path program 1 times [2021-10-11 02:21:00,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:00,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087029833] [2021-10-11 02:21:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:21:00,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087029833] [2021-10-11 02:21:00,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:00,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 02:21:00,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583822269] [2021-10-11 02:21:00,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:00,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:00,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:00,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:00,276 INFO L87 Difference]: Start difference. First operand 183 states and 240 transitions. Second operand 6 states. [2021-10-11 02:21:00,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:00,482 INFO L93 Difference]: Finished difference Result 425 states and 571 transitions. [2021-10-11 02:21:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:21:00,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2021-10-11 02:21:00,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:00,486 INFO L225 Difference]: With dead ends: 425 [2021-10-11 02:21:00,486 INFO L226 Difference]: Without dead ends: 174 [2021-10-11 02:21:00,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-11 02:21:00,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2021-10-11 02:21:00,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-10-11 02:21:00,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2021-10-11 02:21:00,508 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 43 [2021-10-11 02:21:00,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:00,514 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2021-10-11 02:21:00,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:00,515 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2021-10-11 02:21:00,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-11 02:21:00,520 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:00,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:00,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:21:00,521 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:00,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:00,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1745780409, now seen corresponding path program 1 times [2021-10-11 02:21:00,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:00,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317039492] [2021-10-11 02:21:00,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:00,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317039492] [2021-10-11 02:21:00,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719301378] [2021-10-11 02:21:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/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 02:21:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:00,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:00,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:00,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:00,855 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-11 02:21:00,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:21:00,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2021-10-11 02:21:00,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123549890] [2021-10-11 02:21:00,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:00,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:00,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:00,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:00,857 INFO L87 Difference]: Start difference. First operand 140 states and 181 transitions. Second operand 3 states. [2021-10-11 02:21:00,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:00,890 INFO L93 Difference]: Finished difference Result 232 states and 307 transitions. [2021-10-11 02:21:00,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:00,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2021-10-11 02:21:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:00,892 INFO L225 Difference]: With dead ends: 232 [2021-10-11 02:21:00,892 INFO L226 Difference]: Without dead ends: 140 [2021-10-11 02:21:00,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:00,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-11 02:21:00,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-10-11 02:21:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2021-10-11 02:21:00,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 176 transitions. [2021-10-11 02:21:00,901 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 176 transitions. Word has length 46 [2021-10-11 02:21:00,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:00,902 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 176 transitions. [2021-10-11 02:21:00,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:00,902 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 176 transitions. [2021-10-11 02:21:00,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-11 02:21:00,902 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:00,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:01,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-11 02:21:01,118 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:01,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:01,118 INFO L82 PathProgramCache]: Analyzing trace with hash 457585880, now seen corresponding path program 1 times [2021-10-11 02:21:01,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:01,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054030845] [2021-10-11 02:21:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:01,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054030845] [2021-10-11 02:21:01,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99218903] [2021-10-11 02:21:01,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/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 02:21:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:01,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:21:01,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:01,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:01,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:21:01,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-10-11 02:21:01,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898301432] [2021-10-11 02:21:01,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:01,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:01,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:01,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:01,454 INFO L87 Difference]: Start difference. First operand 140 states and 176 transitions. Second operand 4 states. [2021-10-11 02:21:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:01,512 INFO L93 Difference]: Finished difference Result 230 states and 290 transitions. [2021-10-11 02:21:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:01,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-10-11 02:21:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:01,513 INFO L225 Difference]: With dead ends: 230 [2021-10-11 02:21:01,514 INFO L226 Difference]: Without dead ends: 138 [2021-10-11 02:21:01,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:01,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-11 02:21:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 128. [2021-10-11 02:21:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-10-11 02:21:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 155 transitions. [2021-10-11 02:21:01,524 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 155 transitions. Word has length 46 [2021-10-11 02:21:01,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:01,526 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 155 transitions. [2021-10-11 02:21:01,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 155 transitions. [2021-10-11 02:21:01,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-11 02:21:01,527 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:01,527 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:21:01,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:01,735 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:01,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:01,735 INFO L82 PathProgramCache]: Analyzing trace with hash 333433108, now seen corresponding path program 1 times [2021-10-11 02:21:01,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:01,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658513895] [2021-10-11 02:21:01,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:01,775 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 02:21:01,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658513895] [2021-10-11 02:21:01,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:01,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:21:01,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716285018] [2021-10-11 02:21:01,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:21:01,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:01,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:21:01,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:21:01,777 INFO L87 Difference]: Start difference. First operand 128 states and 155 transitions. Second operand 3 states. [2021-10-11 02:21:01,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:01,815 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2021-10-11 02:21:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:21:01,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2021-10-11 02:21:01,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:01,817 INFO L225 Difference]: With dead ends: 200 [2021-10-11 02:21:01,817 INFO L226 Difference]: Without dead ends: 129 [2021-10-11 02:21:01,817 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 02:21:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-11 02:21:01,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2021-10-11 02:21:01,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2021-10-11 02:21:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2021-10-11 02:21:01,827 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 47 [2021-10-11 02:21:01,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:01,827 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2021-10-11 02:21:01,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:21:01,827 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2021-10-11 02:21:01,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-11 02:21:01,828 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:01,829 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:21:01,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:21:01,829 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:01,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:01,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1452132665, now seen corresponding path program 1 times [2021-10-11 02:21:01,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:01,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088451662] [2021-10-11 02:21:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-11 02:21:01,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088451662] [2021-10-11 02:21:01,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:01,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:21:01,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824691954] [2021-10-11 02:21:01,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:21:01,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:01,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:21:01,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:01,899 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 4 states. [2021-10-11 02:21:01,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:01,944 INFO L93 Difference]: Finished difference Result 218 states and 252 transitions. [2021-10-11 02:21:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:21:01,945 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2021-10-11 02:21:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:01,947 INFO L225 Difference]: With dead ends: 218 [2021-10-11 02:21:01,947 INFO L226 Difference]: Without dead ends: 216 [2021-10-11 02:21:01,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:21:01,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-11 02:21:01,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 177. [2021-10-11 02:21:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2021-10-11 02:21:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 206 transitions. [2021-10-11 02:21:01,960 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 206 transitions. Word has length 48 [2021-10-11 02:21:01,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:01,961 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 206 transitions. [2021-10-11 02:21:01,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:21:01,961 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 206 transitions. [2021-10-11 02:21:01,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-11 02:21:01,962 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:01,963 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-10-11 02:21:01,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:21:01,963 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:01,964 INFO L82 PathProgramCache]: Analyzing trace with hash 2014038006, now seen corresponding path program 1 times [2021-10-11 02:21:01,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:01,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974004631] [2021-10-11 02:21:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:02,000 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:21:02,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:21:02,064 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:21:02,064 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:21:02,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:21:02,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:21:02 BoogieIcfgContainer [2021-10-11 02:21:02,204 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:21:02,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:21:02,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:21:02,204 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:21:02,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:58" (3/4) ... [2021-10-11 02:21:02,207 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:21:02,332 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61a540c8-1cc1-4c14-add4-91e439f9c634/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:21:02,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:21:02,334 INFO L168 Benchmark]: Toolchain (without parser) took 5535.56 ms. Allocated memory was 111.1 MB in the beginning and 163.6 MB in the end (delta: 52.4 MB). Free memory was 80.2 MB in the beginning and 104.6 MB in the end (delta: -24.5 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:02,334 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 81.8 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:21:02,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.63 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 82.8 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:02,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.99 ms. Allocated memory is still 111.1 MB. Free memory was 82.8 MB in the beginning and 80.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:02,335 INFO L168 Benchmark]: Boogie Preprocessor took 67.59 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 78.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:02,336 INFO L168 Benchmark]: RCFGBuilder took 1358.61 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 78.1 MB in the beginning and 88.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:02,336 INFO L168 Benchmark]: TraceAbstraction took 3557.56 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 88.0 MB in the beginning and 113.0 MB in the end (delta: -25.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:02,337 INFO L168 Benchmark]: Witness Printer took 127.90 ms. Allocated memory is still 163.6 MB. Free memory was 113.0 MB in the beginning and 104.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:21:02,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 81.8 MB. Free memory was 39.7 MB in the beginning and 39.6 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.63 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 82.8 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.99 ms. Allocated memory is still 111.1 MB. Free memory was 82.8 MB in the beginning and 80.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.59 ms. Allocated memory is still 111.1 MB. Free memory was 80.2 MB in the beginning and 78.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1358.61 ms. Allocated memory was 111.1 MB in the beginning and 136.3 MB in the end (delta: 25.2 MB). Free memory was 78.1 MB in the beginning and 88.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 46.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3557.56 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 88.0 MB in the beginning and 113.0 MB in the end (delta: -25.0 MB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Witness Printer took 127.90 ms. Allocated memory is still 163.6 MB. Free memory was 113.0 MB in the beginning and 104.6 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int m_pc = 0; [L17] int t1_pc = 0; [L18] int m_st ; [L19] int t1_st ; [L20] int m_i ; [L21] int t1_i ; [L22] int M_E = 2; [L23] int T1_E = 2; [L24] int E_M = 2; [L25] int E_1 = 2; [L29] int token ; [L31] int local ; [L477] int __retres1 ; [L392] m_i = 1 [L393] t1_i = 1 [L418] int kernel_st ; [L419] int tmp ; [L420] int tmp___0 ; [L424] kernel_st = 0 [L174] COND TRUE m_i == 1 [L175] m_st = 0 [L179] COND TRUE t1_i == 1 [L180] t1_st = 0 [L263] COND FALSE !(M_E == 0) [L268] COND FALSE !(T1_E == 0) [L273] COND FALSE !(E_M == 0) [L278] COND FALSE !(E_1 == 0) [L316] int tmp ; [L317] int tmp___0 ; [L125] int __retres1 ; VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L128] COND FALSE !(m_pc == 1) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L138] __retres1 = 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L140] return (__retres1); [L321] tmp = is_master_triggered() [L323] COND FALSE !(\read(tmp)) [L144] int __retres1 ; VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L147] COND FALSE !(t1_pc == 1) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L157] __retres1 = 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L159] return (__retres1); [L329] tmp___0 = is_transmit1_triggered() [L331] COND FALSE !(\read(tmp___0)) [L291] COND FALSE !(M_E == 1) [L296] COND FALSE !(T1_E == 1) [L301] COND FALSE !(E_M == 1) [L306] COND FALSE !(E_1 == 1) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L432] COND TRUE 1 [L435] kernel_st = 1 [L210] int tmp ; VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L214] COND TRUE 1 [L189] int __retres1 ; [L192] COND TRUE m_st == 0 [L193] __retres1 = 1 [L205] return (__retres1); [L217] tmp = exists_runnable_thread() [L219] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L224] COND TRUE m_st == 0 [L225] int tmp_ndt_1; [L226] tmp_ndt_1 = __VERIFIER_nondet_int() [L227] COND FALSE !(\read(tmp_ndt_1)) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=0, token=0] [L238] COND TRUE t1_st == 0 [L239] int tmp_ndt_2; [L240] tmp_ndt_2 = __VERIFIER_nondet_int() [L241] COND TRUE \read(tmp_ndt_2) [L243] t1_st = 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, token=0] [L92] COND TRUE t1_pc == 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=0, t1_st=1, token=0] [L103] COND TRUE 1 [L105] t1_pc = 1 [L106] t1_st = 2 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L214] COND TRUE 1 [L189] int __retres1 ; [L192] COND TRUE m_st == 0 [L193] __retres1 = 1 [L205] return (__retres1); [L217] tmp = exists_runnable_thread() [L219] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L224] COND TRUE m_st == 0 [L225] int tmp_ndt_1; [L226] tmp_ndt_1 = __VERIFIER_nondet_int() [L227] COND TRUE \read(tmp_ndt_1) [L229] m_st = 1 [L34] int tmp_var = __VERIFIER_nondet_int(); [L36] COND TRUE m_pc == 0 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L47] COND TRUE 1 [L50] token = __VERIFIER_nondet_int() [L51] local = token [L52] E_1 = 1 [L316] int tmp ; [L317] int tmp___0 ; [L125] int __retres1 ; VAL [E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L128] COND FALSE !(m_pc == 1) VAL [E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L138] __retres1 = 0 VAL [E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L140] return (__retres1); [L321] tmp = is_master_triggered() [L323] COND FALSE !(\read(tmp)) [L144] int __retres1 ; VAL [E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L147] COND TRUE t1_pc == 1 VAL [E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L148] COND TRUE E_1 == 1 [L149] __retres1 = 1 VAL [E_1=1, E_M=2, local=0, M_E=2, m_i=1, m_pc=0, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=0] [L159] return (__retres1); [L329] tmp___0 = is_transmit1_triggered() [L331] COND TRUE \read(tmp___0) [L332] t1_st = 0 [L54] E_1 = 2 [L55] m_pc = 1 [L56] m_st = 2 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=0, token=0] [L238] COND TRUE t1_st == 0 [L239] int tmp_ndt_2; [L240] tmp_ndt_2 = __VERIFIER_nondet_int() [L241] COND TRUE \read(tmp_ndt_2) [L243] t1_st = 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L92] COND FALSE !(t1_pc == 0) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=0] [L95] COND TRUE t1_pc == 1 [L111] token += 1 [L112] E_M = 1 [L316] int tmp ; [L317] int tmp___0 ; [L125] int __retres1 ; VAL [E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L128] COND TRUE m_pc == 1 VAL [E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L129] COND TRUE E_M == 1 [L130] __retres1 = 1 VAL [E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=2, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L140] return (__retres1); [L321] tmp = is_master_triggered() [L323] COND TRUE \read(tmp) [L324] m_st = 0 [L144] int __retres1 ; VAL [E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L147] COND TRUE t1_pc == 1 VAL [E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L148] COND FALSE !(E_1 == 1) VAL [E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L157] __retres1 = 0 VAL [E_1=2, E_M=1, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L159] return (__retres1); [L329] tmp___0 = is_transmit1_triggered() [L331] COND FALSE !(\read(tmp___0)) [L114] E_M = 2 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=1, token=1] [L103] COND TRUE 1 [L105] t1_pc = 1 [L106] t1_st = 2 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L214] COND TRUE 1 [L189] int __retres1 ; [L192] COND TRUE m_st == 0 [L193] __retres1 = 1 [L205] return (__retres1); [L217] tmp = exists_runnable_thread() [L219] COND TRUE \read(tmp) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=0, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L224] COND TRUE m_st == 0 [L225] int tmp_ndt_1; [L226] tmp_ndt_1 = __VERIFIER_nondet_int() [L227] COND TRUE \read(tmp_ndt_1) [L229] m_st = 1 [L34] int tmp_var = __VERIFIER_nondet_int(); [L36] COND FALSE !(m_pc == 0) VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L39] COND TRUE m_pc == 1 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L61] COND FALSE !(token != local + 1) [L66] COND TRUE tmp_var <= 5 [L67] COND TRUE tmp_var >= 5 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L72] COND TRUE tmp_var <= 5 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L73] COND TRUE tmp_var >= 5 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L74] COND TRUE tmp_var == 5 VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] [L12] reach_error() VAL [E_1=2, E_M=2, local=0, M_E=2, m_i=1, m_pc=1, m_st=1, T1_E=2, t1_i=1, t1_pc=1, t1_st=2, token=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 68 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1004 SDtfs, 858 SDslu, 714 SDs, 0 SdLazy, 216 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 130 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 518 NumberOfCodeBlocks, 518 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 545 ConstructedInterpolants, 0 QuantifiedInterpolants, 48423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 461 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 157/159 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 incorrect! Received shutdown request...