./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-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan --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 [2020-12-09 09:54:35,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:54:35,676 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:54:35,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:54:35,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:54:35,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:54:35,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:54:35,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:54:35,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:54:35,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:54:35,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:54:35,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:54:35,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:54:35,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:54:35,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:54:35,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:54:35,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:54:35,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:54:35,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:54:35,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:54:35,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:54:35,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:54:35,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:54:35,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:54:35,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:54:35,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:54:35,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:54:35,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:54:35,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:54:35,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:54:35,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:54:35,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:54:35,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:54:35,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:54:35,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:54:35,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:54:35,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:54:35,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:54:35,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:54:35,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:54:35,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:54:35,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:54:35,776 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:54:35,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:54:35,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:54:35,777 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:54:35,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:54:35,777 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:54:35,778 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:54:35,778 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:54:35,778 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:54:35,778 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:54:35,778 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:54:35,778 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:54:35,779 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:54:35,779 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:54:35,779 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:54:35,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:54:35,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:54:35,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:54:35,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:54:35,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:54:35,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:54:35,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:54:35,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:54:35,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:54:35,781 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:54:35,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:54:35,781 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:54:35,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:54:35,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:54:35,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:54:35,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:54:35,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:54:35,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:54:35,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:54:35,783 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:54:35,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:54:35,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:54:35,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:54:35,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:54:35,784 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-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a64ce668dc38bda3e5df5b168a4e471bb7128c4 [2020-12-09 09:54:35,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:54:35,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:54:36,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:54:36,001 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:54:36,001 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:54:36,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/../../sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2020-12-09 09:54:36,052 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/data/c475584d8/ad466f86951d4a8da7b9cdc2a815a3e0/FLAG91bfc3efb [2020-12-09 09:54:36,436 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:54:36,436 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/sv-benchmarks/c/systemc/token_ring.01.cil-2.c [2020-12-09 09:54:36,444 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/data/c475584d8/ad466f86951d4a8da7b9cdc2a815a3e0/FLAG91bfc3efb [2020-12-09 09:54:36,453 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/data/c475584d8/ad466f86951d4a8da7b9cdc2a815a3e0 [2020-12-09 09:54:36,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:54:36,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:54:36,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:54:36,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:54:36,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:54:36,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39aba484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36, skipping insertion in model container [2020-12-09 09:54:36,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:54:36,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:54:36,584 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/sv-benchmarks/c/systemc/token_ring.01.cil-2.c[366,379] [2020-12-09 09:54:36,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:54:36,633 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:54:36,641 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/sv-benchmarks/c/systemc/token_ring.01.cil-2.c[366,379] [2020-12-09 09:54:36,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:54:36,670 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:54:36,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36 WrapperNode [2020-12-09 09:54:36,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:54:36,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:54:36,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:54:36,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:54:36,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:54:36,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:54:36,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:54:36,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:54:36,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,719 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... [2020-12-09 09:54:36,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:54:36,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:54:36,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:54:36,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:54:36,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/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 [2020-12-09 09:54:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:54:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:54:36,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:54:36,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:54:37,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:54:37,603 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2020-12-09 09:54:37,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:54:37 BoogieIcfgContainer [2020-12-09 09:54:37,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:54:37,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:54:37,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:54:37,610 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:54:37,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:54:36" (1/3) ... [2020-12-09 09:54:37,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e9b770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:54:37, skipping insertion in model container [2020-12-09 09:54:37,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:54:36" (2/3) ... [2020-12-09 09:54:37,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e9b770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:54:37, skipping insertion in model container [2020-12-09 09:54:37,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:54:37" (3/3) ... [2020-12-09 09:54:37,612 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2020-12-09 09:54:37,621 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:54:37,624 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 09:54:37,631 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 09:54:37,647 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:54:37,647 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:54:37,647 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:54:37,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:54:37,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:54:37,648 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:54:37,648 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:54:37,648 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:54:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-12-09 09:54:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 09:54:37,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:37,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:54:37,662 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:37,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:37,665 INFO L82 PathProgramCache]: Analyzing trace with hash -918662650, now seen corresponding path program 1 times [2020-12-09 09:54:37,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:37,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864449793] [2020-12-09 09:54:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:37,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:37,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864449793] [2020-12-09 09:54:37,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:54:37,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:54:37,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880295702] [2020-12-09 09:54:37,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:54:37,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:37,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:54:37,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:54:37,800 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-12-09 09:54:37,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:37,844 INFO L93 Difference]: Finished difference Result 176 states and 271 transitions. [2020-12-09 09:54:37,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:54:37,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-09 09:54:37,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:37,853 INFO L225 Difference]: With dead ends: 176 [2020-12-09 09:54:37,853 INFO L226 Difference]: Without dead ends: 110 [2020-12-09 09:54:37,855 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 [2020-12-09 09:54:37,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-09 09:54:37,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 105. [2020-12-09 09:54:37,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-12-09 09:54:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 153 transitions. [2020-12-09 09:54:37,886 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 153 transitions. Word has length 16 [2020-12-09 09:54:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:37,887 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 153 transitions. [2020-12-09 09:54:37,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:54:37,887 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 153 transitions. [2020-12-09 09:54:37,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 09:54:37,887 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:37,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:54:37,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:54:37,888 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:37,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2088110117, now seen corresponding path program 1 times [2020-12-09 09:54:37,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:37,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707809104] [2020-12-09 09:54:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:37,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707809104] [2020-12-09 09:54:37,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:54:37,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:54:37,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720994751] [2020-12-09 09:54:37,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:54:37,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:37,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:54:37,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:54:37,934 INFO L87 Difference]: Start difference. First operand 105 states and 153 transitions. Second operand 3 states. [2020-12-09 09:54:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:37,976 INFO L93 Difference]: Finished difference Result 283 states and 408 transitions. [2020-12-09 09:54:37,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:54:37,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-12-09 09:54:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:37,979 INFO L225 Difference]: With dead ends: 283 [2020-12-09 09:54:37,979 INFO L226 Difference]: Without dead ends: 180 [2020-12-09 09:54:37,980 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 [2020-12-09 09:54:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-09 09:54:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 169. [2020-12-09 09:54:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-12-09 09:54:38,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 235 transitions. [2020-12-09 09:54:38,000 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 235 transitions. Word has length 16 [2020-12-09 09:54:38,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:38,001 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 235 transitions. [2020-12-09 09:54:38,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:54:38,001 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 235 transitions. [2020-12-09 09:54:38,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-09 09:54:38,002 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:38,003 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] [2020-12-09 09:54:38,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:54:38,003 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:38,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:38,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1548511293, now seen corresponding path program 1 times [2020-12-09 09:54:38,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:38,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277128690] [2020-12-09 09:54:38,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:38,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277128690] [2020-12-09 09:54:38,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:54:38,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:54:38,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924550619] [2020-12-09 09:54:38,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:54:38,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:38,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:54:38,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:54:38,073 INFO L87 Difference]: Start difference. First operand 169 states and 235 transitions. Second operand 3 states. [2020-12-09 09:54:38,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:38,107 INFO L93 Difference]: Finished difference Result 298 states and 426 transitions. [2020-12-09 09:54:38,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:54:38,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-09 09:54:38,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:38,113 INFO L225 Difference]: With dead ends: 298 [2020-12-09 09:54:38,113 INFO L226 Difference]: Without dead ends: 197 [2020-12-09 09:54:38,114 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 [2020-12-09 09:54:38,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-09 09:54:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 183. [2020-12-09 09:54:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-12-09 09:54:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 257 transitions. [2020-12-09 09:54:38,125 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 257 transitions. Word has length 29 [2020-12-09 09:54:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:38,125 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 257 transitions. [2020-12-09 09:54:38,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:54:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 257 transitions. [2020-12-09 09:54:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-09 09:54:38,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:38,127 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] [2020-12-09 09:54:38,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 09:54:38,127 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:38,128 INFO L82 PathProgramCache]: Analyzing trace with hash 824533557, now seen corresponding path program 1 times [2020-12-09 09:54:38,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:38,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14315662] [2020-12-09 09:54:38,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:38,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14315662] [2020-12-09 09:54:38,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:54:38,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:54:38,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780193] [2020-12-09 09:54:38,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:54:38,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:54:38,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:54:38,179 INFO L87 Difference]: Start difference. First operand 183 states and 257 transitions. Second operand 3 states. [2020-12-09 09:54:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:38,207 INFO L93 Difference]: Finished difference Result 309 states and 439 transitions. [2020-12-09 09:54:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:54:38,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2020-12-09 09:54:38,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:38,209 INFO L225 Difference]: With dead ends: 309 [2020-12-09 09:54:38,209 INFO L226 Difference]: Without dead ends: 194 [2020-12-09 09:54:38,211 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 [2020-12-09 09:54:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-12-09 09:54:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2020-12-09 09:54:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-12-09 09:54:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 246 transitions. [2020-12-09 09:54:38,224 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 246 transitions. Word has length 42 [2020-12-09 09:54:38,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:38,224 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 246 transitions. [2020-12-09 09:54:38,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:54:38,225 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 246 transitions. [2020-12-09 09:54:38,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-09 09:54:38,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:38,227 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] [2020-12-09 09:54:38,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 09:54:38,227 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -315818154, now seen corresponding path program 1 times [2020-12-09 09:54:38,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:38,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067349587] [2020-12-09 09:54:38,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 09:54:38,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067349587] [2020-12-09 09:54:38,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:54:38,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:54:38,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331154045] [2020-12-09 09:54:38,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:54:38,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:38,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:54:38,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:54:38,309 INFO L87 Difference]: Start difference. First operand 183 states and 246 transitions. Second operand 5 states. [2020-12-09 09:54:38,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:38,343 INFO L93 Difference]: Finished difference Result 299 states and 407 transitions. [2020-12-09 09:54:38,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:54:38,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-12-09 09:54:38,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:38,344 INFO L225 Difference]: With dead ends: 299 [2020-12-09 09:54:38,344 INFO L226 Difference]: Without dead ends: 188 [2020-12-09 09:54:38,345 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 [2020-12-09 09:54:38,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-09 09:54:38,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 183. [2020-12-09 09:54:38,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-12-09 09:54:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 240 transitions. [2020-12-09 09:54:38,352 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 240 transitions. Word has length 42 [2020-12-09 09:54:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:38,353 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 240 transitions. [2020-12-09 09:54:38,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:54:38,353 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 240 transitions. [2020-12-09 09:54:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-09 09:54:38,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:38,354 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] [2020-12-09 09:54:38,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 09:54:38,354 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:38,355 INFO L82 PathProgramCache]: Analyzing trace with hash 2041046082, now seen corresponding path program 1 times [2020-12-09 09:54:38,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:38,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378008814] [2020-12-09 09:54:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 09:54:38,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378008814] [2020-12-09 09:54:38,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:54:38,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:54:38,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495691626] [2020-12-09 09:54:38,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:54:38,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:38,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:54:38,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:54:38,416 INFO L87 Difference]: Start difference. First operand 183 states and 240 transitions. Second operand 6 states. [2020-12-09 09:54:38,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:38,539 INFO L93 Difference]: Finished difference Result 425 states and 571 transitions. [2020-12-09 09:54:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 09:54:38,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-12-09 09:54:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:38,541 INFO L225 Difference]: With dead ends: 425 [2020-12-09 09:54:38,541 INFO L226 Difference]: Without dead ends: 174 [2020-12-09 09:54:38,542 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 [2020-12-09 09:54:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-09 09:54:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-12-09 09:54:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-09 09:54:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2020-12-09 09:54:38,548 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 43 [2020-12-09 09:54:38,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:38,549 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2020-12-09 09:54:38,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:54:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2020-12-09 09:54:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-09 09:54:38,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:38,550 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] [2020-12-09 09:54:38,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 09:54:38,550 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:38,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:38,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1745780409, now seen corresponding path program 1 times [2020-12-09 09:54:38,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:38,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394956732] [2020-12-09 09:54:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:38,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394956732] [2020-12-09 09:54:38,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665748846] [2020-12-09 09:54:38,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/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 [2020-12-09 09:54:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:38,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 09:54:38,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:54:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 09:54:38,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:54:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 09:54:38,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 09:54:38,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2020-12-09 09:54:38,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358708291] [2020-12-09 09:54:38,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:54:38,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:38,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:54:38,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:54:38,755 INFO L87 Difference]: Start difference. First operand 140 states and 181 transitions. Second operand 3 states. [2020-12-09 09:54:38,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:38,783 INFO L93 Difference]: Finished difference Result 232 states and 307 transitions. [2020-12-09 09:54:38,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:54:38,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-12-09 09:54:38,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:38,785 INFO L225 Difference]: With dead ends: 232 [2020-12-09 09:54:38,785 INFO L226 Difference]: Without dead ends: 140 [2020-12-09 09:54:38,785 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 [2020-12-09 09:54:38,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-09 09:54:38,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-12-09 09:54:38,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-09 09:54:38,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 176 transitions. [2020-12-09 09:54:38,796 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 176 transitions. Word has length 46 [2020-12-09 09:54:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:38,797 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 176 transitions. [2020-12-09 09:54:38,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:54:38,797 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 176 transitions. [2020-12-09 09:54:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-09 09:54:38,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:38,799 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] [2020-12-09 09:54:38,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-09 09:54:39,000 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:39,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:39,002 INFO L82 PathProgramCache]: Analyzing trace with hash 457585880, now seen corresponding path program 1 times [2020-12-09 09:54:39,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:39,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180829012] [2020-12-09 09:54:39,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:39,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180829012] [2020-12-09 09:54:39,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517409827] [2020-12-09 09:54:39,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/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 [2020-12-09 09:54:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:39,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 09:54:39,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:54:39,388 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:39,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:54:39,416 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:39,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 09:54:39,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2020-12-09 09:54:39,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682525273] [2020-12-09 09:54:39,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:54:39,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:39,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:54:39,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:54:39,417 INFO L87 Difference]: Start difference. First operand 140 states and 176 transitions. Second operand 4 states. [2020-12-09 09:54:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:39,457 INFO L93 Difference]: Finished difference Result 230 states and 290 transitions. [2020-12-09 09:54:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:54:39,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-09 09:54:39,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:39,458 INFO L225 Difference]: With dead ends: 230 [2020-12-09 09:54:39,458 INFO L226 Difference]: Without dead ends: 138 [2020-12-09 09:54:39,459 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 [2020-12-09 09:54:39,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-12-09 09:54:39,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 128. [2020-12-09 09:54:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-09 09:54:39,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 155 transitions. [2020-12-09 09:54:39,464 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 155 transitions. Word has length 46 [2020-12-09 09:54:39,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:39,464 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 155 transitions. [2020-12-09 09:54:39,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:54:39,465 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 155 transitions. [2020-12-09 09:54:39,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-09 09:54:39,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:39,465 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] [2020-12-09 09:54:39,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:54:39,666 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:39,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:39,667 INFO L82 PathProgramCache]: Analyzing trace with hash 333433108, now seen corresponding path program 1 times [2020-12-09 09:54:39,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:39,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060491785] [2020-12-09 09:54:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:54:39,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060491785] [2020-12-09 09:54:39,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:54:39,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 09:54:39,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614564406] [2020-12-09 09:54:39,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:54:39,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:39,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:54:39,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:54:39,704 INFO L87 Difference]: Start difference. First operand 128 states and 155 transitions. Second operand 3 states. [2020-12-09 09:54:39,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:39,732 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-12-09 09:54:39,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:54:39,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-12-09 09:54:39,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:39,733 INFO L225 Difference]: With dead ends: 200 [2020-12-09 09:54:39,734 INFO L226 Difference]: Without dead ends: 129 [2020-12-09 09:54:39,734 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 [2020-12-09 09:54:39,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-12-09 09:54:39,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2020-12-09 09:54:39,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-09 09:54:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-12-09 09:54:39,739 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 47 [2020-12-09 09:54:39,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:39,739 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-12-09 09:54:39,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:54:39,740 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-12-09 09:54:39,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-09 09:54:39,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:39,740 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] [2020-12-09 09:54:39,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 09:54:39,740 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:39,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1452132665, now seen corresponding path program 1 times [2020-12-09 09:54:39,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:39,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166743752] [2020-12-09 09:54:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:54:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-12-09 09:54:39,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166743752] [2020-12-09 09:54:39,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:54:39,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:54:39,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754402616] [2020-12-09 09:54:39,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:54:39,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:54:39,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:54:39,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:54:39,790 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 4 states. [2020-12-09 09:54:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:54:39,811 INFO L93 Difference]: Finished difference Result 218 states and 252 transitions. [2020-12-09 09:54:39,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:54:39,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-09 09:54:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:54:39,813 INFO L225 Difference]: With dead ends: 218 [2020-12-09 09:54:39,813 INFO L226 Difference]: Without dead ends: 216 [2020-12-09 09:54:39,813 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 [2020-12-09 09:54:39,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-12-09 09:54:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 177. [2020-12-09 09:54:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-12-09 09:54:39,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 206 transitions. [2020-12-09 09:54:39,822 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 206 transitions. Word has length 48 [2020-12-09 09:54:39,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:54:39,822 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 206 transitions. [2020-12-09 09:54:39,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:54:39,822 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 206 transitions. [2020-12-09 09:54:39,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-09 09:54:39,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:54:39,823 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] [2020-12-09 09:54:39,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 09:54:39,823 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:54:39,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:54:39,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2014038006, now seen corresponding path program 1 times [2020-12-09 09:54:39,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:54:39,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37915625] [2020-12-09 09:54:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:54:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:54:39,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:54:39,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 09:54:39,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 09:54:39,875 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 09:54:39,875 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:54:39,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 09:54:39,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:54:39 BoogieIcfgContainer [2020-12-09 09:54:39,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:54:39,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:54:39,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:54:39,932 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:54:39,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:54:37" (3/4) ... [2020-12-09 09:54:39,934 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 09:54:40,000 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ff160305-a5e4-4ce8-a037-a530d68ef56d/bin/utaipan/witness.graphml [2020-12-09 09:54:40,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:54:40,002 INFO L168 Benchmark]: Toolchain (without parser) took 3545.14 ms. Allocated memory was 94.4 MB in the beginning and 138.4 MB in the end (delta: 44.0 MB). Free memory was 53.3 MB in the beginning and 41.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 58.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:54:40,002 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:54:40,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.25 ms. Allocated memory is still 94.4 MB. Free memory was 53.2 MB in the beginning and 64.3 MB in the end (delta: -11.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-09 09:54:40,003 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.17 ms. Allocated memory is still 94.4 MB. Free memory was 64.3 MB in the beginning and 61.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:54:40,003 INFO L168 Benchmark]: Boogie Preprocessor took 25.79 ms. Allocated memory is still 94.4 MB. Free memory was 61.6 MB in the beginning and 59.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:54:40,003 INFO L168 Benchmark]: RCFGBuilder took 874.19 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 59.5 MB in the beginning and 84.0 MB in the end (delta: -24.4 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:54:40,004 INFO L168 Benchmark]: TraceAbstraction took 2325.18 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 82.9 MB in the beginning and 50.7 MB in the end (delta: 32.2 MB). Peak memory consumption was 56.3 MB. Max. memory is 16.1 GB. [2020-12-09 09:54:40,004 INFO L168 Benchmark]: Witness Printer took 68.56 ms. Allocated memory is still 138.4 MB. Free memory was 49.6 MB in the beginning and 41.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:54:40,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 213.25 ms. Allocated memory is still 94.4 MB. Free memory was 53.2 MB in the beginning and 64.3 MB in the end (delta: -11.1 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.17 ms. Allocated memory is still 94.4 MB. Free memory was 64.3 MB in the beginning and 61.6 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.79 ms. Allocated memory is still 94.4 MB. Free memory was 61.6 MB in the beginning and 59.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 874.19 ms. Allocated memory was 94.4 MB in the beginning and 115.3 MB in the end (delta: 21.0 MB). Free memory was 59.5 MB in the beginning and 84.0 MB in the end (delta: -24.4 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2325.18 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 82.9 MB in the beginning and 50.7 MB in the end (delta: 32.2 MB). Peak memory consumption was 56.3 MB. Max. memory is 16.1 GB. * Witness Printer took 68.56 ms. Allocated memory is still 138.4 MB. Free memory was 49.6 MB in the beginning and 41.2 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: 2.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 0.4s, 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, 0.2s 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: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 130 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s 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...