./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i --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_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/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 09cc37004f61233243127b1a254be8b536d0c1f6 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:42:38,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:42:38,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:42:38,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:42:38,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:42:38,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:42:38,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:42:38,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:42:38,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:42:38,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:42:38,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:42:38,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:42:38,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:42:38,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:42:38,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:42:38,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:42:38,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:42:38,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:42:38,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:42:38,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:42:38,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:42:38,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:42:38,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:42:38,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:42:38,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:42:38,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:42:38,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:42:38,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:42:38,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:42:38,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:42:38,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:42:38,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:42:38,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:42:38,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:42:38,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:42:38,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:42:38,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:42:38,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:42:38,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:42:38,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:42:38,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:42:38,586 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:42:38,603 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:42:38,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:42:38,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:42:38,604 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:42:38,604 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:42:38,604 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:42:38,604 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:42:38,604 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:42:38,604 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:42:38,604 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:42:38,604 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:42:38,604 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:42:38,605 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:42:38,605 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:42:38,605 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:42:38,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:42:38,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:42:38,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:42:38,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:42:38,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:42:38,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:42:38,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:42:38,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:42:38,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:42:38,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:42:38,607 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:42:38,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:42:38,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:42:38,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:42:38,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:42:38,608 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_01663ced-12fa-4fa4-9394-fe2e33a2b09f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09cc37004f61233243127b1a254be8b536d0c1f6 [2020-12-09 05:42:38,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:42:38,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:42:38,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:42:38,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:42:38,784 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:42:38,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i [2020-12-09 05:42:38,839 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/data/59a2cae00/87b4c2f5447c487f86f263987ac1e8c8/FLAG2a605d72b [2020-12-09 05:42:39,233 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:42:39,233 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i [2020-12-09 05:42:39,245 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/data/59a2cae00/87b4c2f5447c487f86f263987ac1e8c8/FLAG2a605d72b [2020-12-09 05:42:39,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/data/59a2cae00/87b4c2f5447c487f86f263987ac1e8c8 [2020-12-09 05:42:39,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:42:39,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:42:39,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:42:39,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:42:39,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:42:39,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f541aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39, skipping insertion in model container [2020-12-09 05:42:39,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:42:39,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:42:39,425 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_01663ced-12fa-4fa4-9394-fe2e33a2b09f/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i[950,963] [2020-12-09 05:42:39,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:42:39,541 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:42:39,549 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_01663ced-12fa-4fa4-9394-fe2e33a2b09f/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc.i[950,963] [2020-12-09 05:42:39,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:42:39,621 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:42:39,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39 WrapperNode [2020-12-09 05:42:39,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:42:39,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:42:39,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:42:39,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:42:39,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:42:39,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:42:39,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:42:39,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:42:39,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... [2020-12-09 05:42:39,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:42:39,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:42:39,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:42:39,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:42:39,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/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 05:42:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 05:42:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 05:42:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:42:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 05:42:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 05:42:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 05:42:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 05:42:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 05:42:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 05:42:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 05:42:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:42:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 05:42:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:42:39,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:42:39,735 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 05:42:39,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:42:39,965 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 05:42:39,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:42:39 BoogieIcfgContainer [2020-12-09 05:42:39,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:42:39,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:42:39,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:42:39,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:42:39,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:42:39" (1/3) ... [2020-12-09 05:42:39,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea09935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:42:39, skipping insertion in model container [2020-12-09 05:42:39,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:39" (2/3) ... [2020-12-09 05:42:39,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea09935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:42:39, skipping insertion in model container [2020-12-09 05:42:39,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:42:39" (3/3) ... [2020-12-09 05:42:39,975 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2020-12-09 05:42:39,987 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 05:42:39,987 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:42:39,989 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:42:39,990 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 05:42:40,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,011 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,012 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,012 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,012 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,012 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,012 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,013 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,013 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,013 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,013 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,014 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,014 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,014 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,014 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,014 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,015 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,015 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,016 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,016 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,017 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,019 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,019 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,023 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,023 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,024 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,024 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,025 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,026 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,026 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,026 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 05:42:40,027 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 05:42:40,035 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 05:42:40,050 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:42:40,050 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:42:40,050 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:42:40,050 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:42:40,051 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:42:40,051 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:42:40,051 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:42:40,051 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:42:40,059 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 05:42:40,061 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 05:42:40,063 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 75 transitions, 165 flow [2020-12-09 05:42:40,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 75 transitions, 165 flow [2020-12-09 05:42:40,095 INFO L129 PetriNetUnfolder]: 2/72 cut-off events. [2020-12-09 05:42:40,095 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 05:42:40,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 05:42:40,101 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 05:42:41,840 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 05:42:42,042 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-12-09 05:42:42,106 INFO L131 LiptonReduction]: Checked pairs total: 2653 [2020-12-09 05:42:42,106 INFO L133 LiptonReduction]: Total number of compositions: 59 [2020-12-09 05:42:42,110 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-12-09 05:42:42,129 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-12-09 05:42:42,131 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-12-09 05:42:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 05:42:42,135 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:42,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:42,136 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:42,139 INFO L82 PathProgramCache]: Analyzing trace with hash -991402129, now seen corresponding path program 1 times [2020-12-09 05:42:42,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:42,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562104545] [2020-12-09 05:42:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:42,252 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 05:42:42,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562104545] [2020-12-09 05:42:42,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:42,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:42:42,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351241525] [2020-12-09 05:42:42,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:42:42,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:42,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:42:42,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:42:42,266 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-12-09 05:42:42,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:42,287 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-12-09 05:42:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:42:42,288 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 05:42:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:42,298 INFO L225 Difference]: With dead ends: 362 [2020-12-09 05:42:42,298 INFO L226 Difference]: Without dead ends: 298 [2020-12-09 05:42:42,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:42:42,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-12-09 05:42:42,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-12-09 05:42:42,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-12-09 05:42:42,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-12-09 05:42:42,346 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-12-09 05:42:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:42,347 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-12-09 05:42:42,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:42:42,347 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-12-09 05:42:42,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 05:42:42,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:42,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:42,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:42:42,348 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:42,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:42,348 INFO L82 PathProgramCache]: Analyzing trace with hash -668714259, now seen corresponding path program 1 times [2020-12-09 05:42:42,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:42,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335906191] [2020-12-09 05:42:42,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:42,441 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 05:42:42,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335906191] [2020-12-09 05:42:42,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:42,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:42:42,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424127046] [2020-12-09 05:42:42,443 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:42:42,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:42,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:42:42,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:42:42,443 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-12-09 05:42:42,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:42,467 INFO L93 Difference]: Finished difference Result 330 states and 912 transitions. [2020-12-09 05:42:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:42:42,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 05:42:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:42,470 INFO L225 Difference]: With dead ends: 330 [2020-12-09 05:42:42,470 INFO L226 Difference]: Without dead ends: 266 [2020-12-09 05:42:42,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:42:42,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-12-09 05:42:42,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-12-09 05:42:42,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-12-09 05:42:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 752 transitions. [2020-12-09 05:42:42,485 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 752 transitions. Word has length 9 [2020-12-09 05:42:42,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:42,485 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 752 transitions. [2020-12-09 05:42:42,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:42:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 752 transitions. [2020-12-09 05:42:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 05:42:42,487 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:42,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:42,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:42:42,487 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:42,487 INFO L82 PathProgramCache]: Analyzing trace with hash 744680885, now seen corresponding path program 1 times [2020-12-09 05:42:42,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:42,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072681150] [2020-12-09 05:42:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:42,547 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 05:42:42,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072681150] [2020-12-09 05:42:42,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:42,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:42:42,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647580908] [2020-12-09 05:42:42,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:42:42,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:42,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:42:42,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:42:42,549 INFO L87 Difference]: Start difference. First operand 266 states and 752 transitions. Second operand 5 states. [2020-12-09 05:42:42,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:42,594 INFO L93 Difference]: Finished difference Result 362 states and 1008 transitions. [2020-12-09 05:42:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:42:42,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-09 05:42:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:42,596 INFO L225 Difference]: With dead ends: 362 [2020-12-09 05:42:42,596 INFO L226 Difference]: Without dead ends: 218 [2020-12-09 05:42:42,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:42:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-09 05:42:42,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-12-09 05:42:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-12-09 05:42:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 592 transitions. [2020-12-09 05:42:42,605 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 592 transitions. Word has length 10 [2020-12-09 05:42:42,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:42,605 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 592 transitions. [2020-12-09 05:42:42,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:42:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 592 transitions. [2020-12-09 05:42:42,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 05:42:42,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:42,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:42,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 05:42:42,607 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:42,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:42,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1281410722, now seen corresponding path program 1 times [2020-12-09 05:42:42,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:42,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653008455] [2020-12-09 05:42:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:42,662 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 05:42:42,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653008455] [2020-12-09 05:42:42,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:42,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:42:42,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005196540] [2020-12-09 05:42:42,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:42:42,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:42:42,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:42:42,663 INFO L87 Difference]: Start difference. First operand 218 states and 592 transitions. Second operand 5 states. [2020-12-09 05:42:42,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:42,708 INFO L93 Difference]: Finished difference Result 278 states and 737 transitions. [2020-12-09 05:42:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:42:42,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 05:42:42,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:42,710 INFO L225 Difference]: With dead ends: 278 [2020-12-09 05:42:42,711 INFO L226 Difference]: Without dead ends: 170 [2020-12-09 05:42:42,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:42:42,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-12-09 05:42:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-12-09 05:42:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-12-09 05:42:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-12-09 05:42:42,718 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-12-09 05:42:42,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:42,719 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-12-09 05:42:42,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:42:42,719 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-12-09 05:42:42,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 05:42:42,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:42,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:42,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 05:42:42,721 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:42,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:42,721 INFO L82 PathProgramCache]: Analyzing trace with hash -663598862, now seen corresponding path program 1 times [2020-12-09 05:42:42,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:42,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127966595] [2020-12-09 05:42:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:42,783 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 05:42:42,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127966595] [2020-12-09 05:42:42,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:42,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:42:42,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187807879] [2020-12-09 05:42:42,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:42:42,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:42,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:42:42,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:42:42,785 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-12-09 05:42:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:42,804 INFO L93 Difference]: Finished difference Result 182 states and 446 transitions. [2020-12-09 05:42:42,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:42:42,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-09 05:42:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:42,806 INFO L225 Difference]: With dead ends: 182 [2020-12-09 05:42:42,806 INFO L226 Difference]: Without dead ends: 158 [2020-12-09 05:42:42,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:42:42,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-09 05:42:42,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-12-09 05:42:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-12-09 05:42:42,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-12-09 05:42:42,812 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 12 [2020-12-09 05:42:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:42,813 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-12-09 05:42:42,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:42:42,813 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-12-09 05:42:42,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 05:42:42,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:42,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:42,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 05:42:42,815 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:42,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1497460825, now seen corresponding path program 1 times [2020-12-09 05:42:42,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:42,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102912567] [2020-12-09 05:42:42,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:42,876 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 05:42:42,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102912567] [2020-12-09 05:42:42,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:42,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:42:42,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674998539] [2020-12-09 05:42:42,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:42:42,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:42,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:42:42,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:42:42,878 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 5 states. [2020-12-09 05:42:42,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:42,914 INFO L93 Difference]: Finished difference Result 188 states and 459 transitions. [2020-12-09 05:42:42,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:42:42,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 05:42:42,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:42,915 INFO L225 Difference]: With dead ends: 188 [2020-12-09 05:42:42,915 INFO L226 Difference]: Without dead ends: 80 [2020-12-09 05:42:42,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:42:42,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-09 05:42:42,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-09 05:42:42,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-09 05:42:42,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 176 transitions. [2020-12-09 05:42:42,918 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 176 transitions. Word has length 13 [2020-12-09 05:42:42,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:42,918 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 176 transitions. [2020-12-09 05:42:42,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:42:42,919 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 176 transitions. [2020-12-09 05:42:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 05:42:42,919 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:42,919 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:42,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 05:42:42,920 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:42,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:42,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2064800307, now seen corresponding path program 1 times [2020-12-09 05:42:42,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:42,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428946998] [2020-12-09 05:42:42,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:42,965 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 05:42:42,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428946998] [2020-12-09 05:42:42,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:42,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 05:42:42,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706889948] [2020-12-09 05:42:42,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:42:42,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:42,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:42:42,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:42:42,967 INFO L87 Difference]: Start difference. First operand 80 states and 176 transitions. Second operand 4 states. [2020-12-09 05:42:42,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:42,987 INFO L93 Difference]: Finished difference Result 91 states and 181 transitions. [2020-12-09 05:42:42,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 05:42:42,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-09 05:42:42,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:42,988 INFO L225 Difference]: With dead ends: 91 [2020-12-09 05:42:42,988 INFO L226 Difference]: Without dead ends: 69 [2020-12-09 05:42:42,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:42:42,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-09 05:42:42,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-12-09 05:42:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 05:42:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 138 transitions. [2020-12-09 05:42:42,990 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 138 transitions. Word has length 14 [2020-12-09 05:42:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:42,990 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 138 transitions. [2020-12-09 05:42:42,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:42:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 138 transitions. [2020-12-09 05:42:42,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 05:42:42,990 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:42,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:42,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 05:42:42,991 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:42,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:42,991 INFO L82 PathProgramCache]: Analyzing trace with hash 182443752, now seen corresponding path program 1 times [2020-12-09 05:42:42,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:42,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218538784] [2020-12-09 05:42:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:43,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:43,026 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 05:42:43,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218538784] [2020-12-09 05:42:43,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:43,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:42:43,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803354344] [2020-12-09 05:42:43,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:42:43,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:43,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:42:43,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:42:43,028 INFO L87 Difference]: Start difference. First operand 69 states and 138 transitions. Second operand 5 states. [2020-12-09 05:42:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:43,050 INFO L93 Difference]: Finished difference Result 65 states and 113 transitions. [2020-12-09 05:42:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:42:43,051 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-12-09 05:42:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:43,051 INFO L225 Difference]: With dead ends: 65 [2020-12-09 05:42:43,051 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 05:42:43,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:42:43,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 05:42:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-09 05:42:43,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 05:42:43,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 83 transitions. [2020-12-09 05:42:43,053 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 83 transitions. Word has length 15 [2020-12-09 05:42:43,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:43,053 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 83 transitions. [2020-12-09 05:42:43,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:42:43,053 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 83 transitions. [2020-12-09 05:42:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 05:42:43,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:43,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:43,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 05:42:43,053 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:43,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1015325315, now seen corresponding path program 1 times [2020-12-09 05:42:43,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:43,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909755973] [2020-12-09 05:42:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:43,090 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 05:42:43,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909755973] [2020-12-09 05:42:43,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:43,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 05:42:43,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921283910] [2020-12-09 05:42:43,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 05:42:43,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:43,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 05:42:43,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 05:42:43,092 INFO L87 Difference]: Start difference. First operand 50 states and 83 transitions. Second operand 6 states. [2020-12-09 05:42:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:43,126 INFO L93 Difference]: Finished difference Result 43 states and 67 transitions. [2020-12-09 05:42:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 05:42:43,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-09 05:42:43,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:43,126 INFO L225 Difference]: With dead ends: 43 [2020-12-09 05:42:43,126 INFO L226 Difference]: Without dead ends: 37 [2020-12-09 05:42:43,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:42:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-09 05:42:43,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-09 05:42:43,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-09 05:42:43,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-12-09 05:42:43,128 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 16 [2020-12-09 05:42:43,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:43,128 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-12-09 05:42:43,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 05:42:43,128 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-12-09 05:42:43,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 05:42:43,128 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:42:43,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:42:43,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 05:42:43,129 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:42:43,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:42:43,129 INFO L82 PathProgramCache]: Analyzing trace with hash 719368643, now seen corresponding path program 1 times [2020-12-09 05:42:43,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:42:43,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510650317] [2020-12-09 05:42:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:42:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:42:43,176 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 05:42:43,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510650317] [2020-12-09 05:42:43,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:42:43,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:42:43,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783899670] [2020-12-09 05:42:43,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 05:42:43,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:42:43,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 05:42:43,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:42:43,177 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 5 states. [2020-12-09 05:42:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:42:43,219 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-12-09 05:42:43,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 05:42:43,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-09 05:42:43,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:42:43,219 INFO L225 Difference]: With dead ends: 36 [2020-12-09 05:42:43,219 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:42:43,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:42:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:42:43,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:42:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:42:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:42:43,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 05:42:43,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:42:43,220 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:42:43,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 05:42:43,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:42:43,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:42:43,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 05:42:43,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:42:43 BasicIcfg [2020-12-09 05:42:43,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:42:43,222 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:42:43,222 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:42:43,222 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:42:43,223 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:42:39" (3/4) ... [2020-12-09 05:42:43,225 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:42:43,229 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 05:42:43,229 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 05:42:43,229 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 05:42:43,232 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 05:42:43,232 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 05:42:43,232 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:42:43,232 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:42:43,259 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_01663ced-12fa-4fa4-9394-fe2e33a2b09f/bin/utaipan/witness.graphml [2020-12-09 05:42:43,259 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:42:43,260 INFO L168 Benchmark]: Toolchain (without parser) took 3997.12 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 73.7 MB in the beginning and 76.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-12-09 05:42:43,260 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 73.4 MB. Free memory was 32.6 MB in the beginning and 32.6 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:42:43,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.13 ms. Allocated memory is still 109.1 MB. Free memory was 73.5 MB in the beginning and 64.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:42:43,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.15 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 61.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:42:43,262 INFO L168 Benchmark]: Boogie Preprocessor took 18.47 ms. Allocated memory is still 109.1 MB. Free memory was 61.9 MB in the beginning and 60.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:42:43,262 INFO L168 Benchmark]: RCFGBuilder took 296.70 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 60.4 MB in the beginning and 108.4 MB in the end (delta: -48.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2020-12-09 05:42:43,263 INFO L168 Benchmark]: TraceAbstraction took 3252.79 ms. Allocated memory is still 132.1 MB. Free memory was 108.4 MB in the beginning and 79.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2020-12-09 05:42:43,263 INFO L168 Benchmark]: Witness Printer took 36.54 ms. Allocated memory is still 132.1 MB. Free memory was 79.6 MB in the beginning and 76.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 05:42:43,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 73.4 MB. Free memory was 32.6 MB in the beginning and 32.6 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.13 ms. Allocated memory is still 109.1 MB. Free memory was 73.5 MB in the beginning and 64.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.15 ms. Allocated memory is still 109.1 MB. Free memory was 64.0 MB in the beginning and 61.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.47 ms. Allocated memory is still 109.1 MB. Free memory was 61.9 MB in the beginning and 60.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 296.70 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 60.4 MB in the beginning and 108.4 MB in the end (delta: -48.0 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3252.79 ms. Allocated memory is still 132.1 MB. Free memory was 108.4 MB in the beginning and 79.6 MB in the end (delta: 28.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * Witness Printer took 36.54 ms. Allocated memory is still 132.1 MB. Free memory was 79.6 MB in the beginning and 76.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 734 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 30 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 58 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.0s, 83 PlacesBefore, 32 PlacesAfterwards, 75 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2653 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 215 SDtfs, 211 SDslu, 316 SDs, 0 SdLazy, 160 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 5825 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...