./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 713cebf5ac496914464c3b07e269efb1002ec95d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:35:53,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:35:53,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:35:53,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:35:53,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:35:53,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:35:53,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:35:53,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:35:53,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:35:53,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:35:53,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:35:53,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:35:53,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:35:53,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:35:53,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:35:53,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:35:53,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:35:53,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:35:53,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:35:53,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:35:53,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:35:53,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:35:53,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:35:53,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:35:53,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:35:53,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:35:53,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:35:53,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:35:53,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:35:53,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:35:53,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:35:53,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:35:53,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:35:53,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:35:53,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:35:53,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:35:53,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:35:53,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:35:53,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:35:53,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:35:53,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:35:53,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:35:53,326 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:35:53,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:35:53,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:35:53,328 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:35:53,328 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:35:53,328 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:35:53,328 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:35:53,328 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:35:53,329 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:35:53,329 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:35:53,330 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:35:53,330 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:35:53,330 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:35:53,330 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:35:53,331 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:35:53,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:35:53,331 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:35:53,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:35:53,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:35:53,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:35:53,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:35:53,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:35:53,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:35:53,333 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:35:53,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:35:53,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:35:53,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:35:53,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:35:53,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:35:53,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:35:53,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:35:53,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:35:53,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:35:53,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:35:53,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:35:53,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:35:53,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:35:53,336 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/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(__VERIFIER_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 -> 713cebf5ac496914464c3b07e269efb1002ec95d [2019-11-26 02:35:53,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:35:53,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:35:53,491 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:35:53,492 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:35:53,493 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:35:53,493 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2019-11-26 02:35:53,555 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/data/33e2136f2/108b709d4bce4031bf98c8e811053e26/FLAG7008a0ba4 [2019-11-26 02:35:53,992 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:35:53,993 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/sv-benchmarks/c/pthread-wmm/thin002_tso.oepc.i [2019-11-26 02:35:54,016 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/data/33e2136f2/108b709d4bce4031bf98c8e811053e26/FLAG7008a0ba4 [2019-11-26 02:35:54,025 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/data/33e2136f2/108b709d4bce4031bf98c8e811053e26 [2019-11-26 02:35:54,028 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:35:54,029 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:35:54,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:35:54,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:35:54,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:35:54,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58cb715e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54, skipping insertion in model container [2019-11-26 02:35:54,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:35:54,082 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:35:54,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:35:54,486 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:35:54,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:35:54,633 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:35:54,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54 WrapperNode [2019-11-26 02:35:54,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:35:54,634 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:35:54,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:35:54,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:35:54,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:35:54,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:35:54,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:35:54,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:35:54,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,689 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... [2019-11-26 02:35:54,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:35:54,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:35:54,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:35:54,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:35:54,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/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 [2019-11-26 02:35:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:35:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:35:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:35:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:35:54,763 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-26 02:35:54,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-26 02:35:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-26 02:35:54,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-26 02:35:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-26 02:35:54,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-26 02:35:54,764 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-26 02:35:54,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-26 02:35:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:35:54,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:35:54,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:35:54,766 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:35:55,095 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:35:55,095 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-26 02:35:55,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:35:55 BoogieIcfgContainer [2019-11-26 02:35:55,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:35:55,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:35:55,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:35:55,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:35:55,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:35:54" (1/3) ... [2019-11-26 02:35:55,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fad885d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:35:55, skipping insertion in model container [2019-11-26 02:35:55,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:35:54" (2/3) ... [2019-11-26 02:35:55,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fad885d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:35:55, skipping insertion in model container [2019-11-26 02:35:55,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:35:55" (3/3) ... [2019-11-26 02:35:55,106 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc.i [2019-11-26 02:35:55,158 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,158 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,158 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,159 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,159 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,159 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,160 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,160 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,160 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,160 WARN L315 ript$VariableManager]: TermVariabe P0Thread3of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,160 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,161 WARN L315 ript$VariableManager]: TermVariabe |P0Thread3of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,161 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,161 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,161 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,162 WARN L315 ript$VariableManager]: TermVariabe P0Thread2of3ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,162 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,162 WARN L315 ript$VariableManager]: TermVariabe |P0Thread2of3ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,163 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,163 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,163 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,163 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,163 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,164 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,164 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,164 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,164 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,165 WARN L315 ript$VariableManager]: TermVariabe P1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,165 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,165 WARN L315 ript$VariableManager]: TermVariabe |P1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,166 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,166 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,166 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,166 WARN L315 ript$VariableManager]: TermVariabe P1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,166 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,167 WARN L315 ript$VariableManager]: TermVariabe |P1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,167 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,167 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,167 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,167 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,168 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,168 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,168 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,168 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,169 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,169 WARN L315 ript$VariableManager]: TermVariabe P2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,169 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,169 WARN L315 ript$VariableManager]: TermVariabe |P2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,170 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,170 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,170 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,170 WARN L315 ript$VariableManager]: TermVariabe P2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,170 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,171 WARN L315 ript$VariableManager]: TermVariabe |P2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,171 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,171 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,171 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,171 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,172 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,172 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,172 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,172 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,173 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,173 WARN L315 ript$VariableManager]: TermVariabe P3Thread2of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,173 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,173 WARN L315 ript$VariableManager]: TermVariabe |P3Thread2of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,174 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,174 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,174 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,174 WARN L315 ript$VariableManager]: TermVariabe P3Thread3of3ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,174 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,175 WARN L315 ript$VariableManager]: TermVariabe |P3Thread3of3ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:35:55,204 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:35:55,205 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:35:55,211 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:35:55,221 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:35:55,237 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:35:55,238 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:35:55,238 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:35:55,238 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:35:55,238 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:35:55,238 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:35:55,238 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:35:55,239 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:35:55,249 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 123 places, 95 transitions [2019-11-26 02:35:55,847 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5475 states. [2019-11-26 02:35:55,849 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states. [2019-11-26 02:35:55,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-26 02:35:55,884 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:35:55,885 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:35:55,885 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:35:55,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:35:55,891 INFO L82 PathProgramCache]: Analyzing trace with hash 531103723, now seen corresponding path program 1 times [2019-11-26 02:35:55,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:35:55,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410360698] [2019-11-26 02:35:55,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:35:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:35:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:35:56,265 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410360698] [2019-11-26 02:35:56,266 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:35:56,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:35:56,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938126269] [2019-11-26 02:35:56,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:35:56,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:35:56,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:35:56,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:35:56,287 INFO L87 Difference]: Start difference. First operand 5475 states. Second operand 4 states. [2019-11-26 02:35:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:35:56,463 INFO L93 Difference]: Finished difference Result 5712 states and 21937 transitions. [2019-11-26 02:35:56,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:35:56,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2019-11-26 02:35:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:35:56,518 INFO L225 Difference]: With dead ends: 5712 [2019-11-26 02:35:56,518 INFO L226 Difference]: Without dead ends: 2396 [2019-11-26 02:35:56,520 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:35:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2019-11-26 02:35:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2396. [2019-11-26 02:35:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2396 states. [2019-11-26 02:35:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2396 states to 2396 states and 8940 transitions. [2019-11-26 02:35:56,723 INFO L78 Accepts]: Start accepts. Automaton has 2396 states and 8940 transitions. Word has length 38 [2019-11-26 02:35:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:35:56,725 INFO L462 AbstractCegarLoop]: Abstraction has 2396 states and 8940 transitions. [2019-11-26 02:35:56,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:35:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 2396 states and 8940 transitions. [2019-11-26 02:35:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 02:35:56,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:35:56,731 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:35:56,731 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:35:56,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:35:56,732 INFO L82 PathProgramCache]: Analyzing trace with hash 246307377, now seen corresponding path program 1 times [2019-11-26 02:35:56,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:35:56,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718751830] [2019-11-26 02:35:56,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:35:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:35:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:35:56,905 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718751830] [2019-11-26 02:35:56,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:35:56,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:35:56,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172494928] [2019-11-26 02:35:56,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:35:56,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:35:56,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:35:56,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:35:56,908 INFO L87 Difference]: Start difference. First operand 2396 states and 8940 transitions. Second operand 5 states. [2019-11-26 02:35:57,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:35:57,031 INFO L93 Difference]: Finished difference Result 2567 states and 9324 transitions. [2019-11-26 02:35:57,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:35:57,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-11-26 02:35:57,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:35:57,055 INFO L225 Difference]: With dead ends: 2567 [2019-11-26 02:35:57,056 INFO L226 Difference]: Without dead ends: 2312 [2019-11-26 02:35:57,057 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:35:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2019-11-26 02:35:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2312. [2019-11-26 02:35:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2312 states. [2019-11-26 02:35:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 8548 transitions. [2019-11-26 02:35:57,212 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 8548 transitions. Word has length 39 [2019-11-26 02:35:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:35:57,213 INFO L462 AbstractCegarLoop]: Abstraction has 2312 states and 8548 transitions. [2019-11-26 02:35:57,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:35:57,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 8548 transitions. [2019-11-26 02:35:57,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:35:57,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:35:57,220 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:35:57,220 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:35:57,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:35:57,220 INFO L82 PathProgramCache]: Analyzing trace with hash 2135304403, now seen corresponding path program 1 times [2019-11-26 02:35:57,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:35:57,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556678465] [2019-11-26 02:35:57,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:35:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:35:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:35:57,348 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556678465] [2019-11-26 02:35:57,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:35:57,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:35:57,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159794017] [2019-11-26 02:35:57,349 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 02:35:57,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:35:57,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 02:35:57,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:35:57,350 INFO L87 Difference]: Start difference. First operand 2312 states and 8548 transitions. Second operand 6 states. [2019-11-26 02:35:57,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:35:57,468 INFO L93 Difference]: Finished difference Result 2177 states and 7684 transitions. [2019-11-26 02:35:57,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:35:57,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2019-11-26 02:35:57,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:35:57,485 INFO L225 Difference]: With dead ends: 2177 [2019-11-26 02:35:57,486 INFO L226 Difference]: Without dead ends: 1934 [2019-11-26 02:35:57,486 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:35:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2019-11-26 02:35:57,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1934. [2019-11-26 02:35:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2019-11-26 02:35:57,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 6910 transitions. [2019-11-26 02:35:57,551 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 6910 transitions. Word has length 40 [2019-11-26 02:35:57,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:35:57,552 INFO L462 AbstractCegarLoop]: Abstraction has 1934 states and 6910 transitions. [2019-11-26 02:35:57,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 02:35:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 6910 transitions. [2019-11-26 02:35:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-26 02:35:57,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:35:57,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:35:57,559 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:35:57,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:35:57,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1682641852, now seen corresponding path program 1 times [2019-11-26 02:35:57,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:35:57,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684892701] [2019-11-26 02:35:57,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:35:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:35:57,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:35:57,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684892701] [2019-11-26 02:35:57,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:35:57,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:35:57,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692021886] [2019-11-26 02:35:57,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:35:57,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:35:57,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:35:57,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:35:57,716 INFO L87 Difference]: Start difference. First operand 1934 states and 6910 transitions. Second operand 7 states. [2019-11-26 02:35:57,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:35:57,842 INFO L93 Difference]: Finished difference Result 1367 states and 4534 transitions. [2019-11-26 02:35:57,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:35:57,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-11-26 02:35:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:35:57,853 INFO L225 Difference]: With dead ends: 1367 [2019-11-26 02:35:57,853 INFO L226 Difference]: Without dead ends: 1178 [2019-11-26 02:35:57,854 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:35:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2019-11-26 02:35:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1178. [2019-11-26 02:35:57,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2019-11-26 02:35:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 3886 transitions. [2019-11-26 02:35:57,889 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 3886 transitions. Word has length 41 [2019-11-26 02:35:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:35:57,890 INFO L462 AbstractCegarLoop]: Abstraction has 1178 states and 3886 transitions. [2019-11-26 02:35:57,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:35:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 3886 transitions. [2019-11-26 02:35:57,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-26 02:35:57,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:35:57,893 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:35:57,894 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:35:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:35:57,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1085706427, now seen corresponding path program 1 times [2019-11-26 02:35:57,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:35:57,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948398150] [2019-11-26 02:35:57,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:35:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:35:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:35:58,027 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948398150] [2019-11-26 02:35:58,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:35:58,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:35:58,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925207457] [2019-11-26 02:35:58,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:35:58,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:35:58,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:35:58,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:35:58,029 INFO L87 Difference]: Start difference. First operand 1178 states and 3886 transitions. Second operand 8 states. [2019-11-26 02:35:58,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:35:58,145 INFO L93 Difference]: Finished difference Result 1871 states and 6223 transitions. [2019-11-26 02:35:58,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:35:58,146 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-11-26 02:35:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:35:58,155 INFO L225 Difference]: With dead ends: 1871 [2019-11-26 02:35:58,155 INFO L226 Difference]: Without dead ends: 1082 [2019-11-26 02:35:58,155 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:35:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2019-11-26 02:35:58,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 1082. [2019-11-26 02:35:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2019-11-26 02:35:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 3538 transitions. [2019-11-26 02:35:58,195 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 3538 transitions. Word has length 42 [2019-11-26 02:35:58,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:35:58,195 INFO L462 AbstractCegarLoop]: Abstraction has 1082 states and 3538 transitions. [2019-11-26 02:35:58,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:35:58,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 3538 transitions. [2019-11-26 02:35:58,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-26 02:35:58,198 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:35:58,198 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:35:58,198 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:35:58,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:35:58,199 INFO L82 PathProgramCache]: Analyzing trace with hash 590924317, now seen corresponding path program 2 times [2019-11-26 02:35:58,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:35:58,199 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355487731] [2019-11-26 02:35:58,199 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:35:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:35:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:35:58,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355487731] [2019-11-26 02:35:58,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:35:58,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-26 02:35:58,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230335933] [2019-11-26 02:35:58,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:35:58,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:35:58,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:35:58,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:35:58,380 INFO L87 Difference]: Start difference. First operand 1082 states and 3538 transitions. Second operand 8 states. [2019-11-26 02:35:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:35:58,490 INFO L93 Difference]: Finished difference Result 1604 states and 5341 transitions. [2019-11-26 02:35:58,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:35:58,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2019-11-26 02:35:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:35:58,498 INFO L225 Difference]: With dead ends: 1604 [2019-11-26 02:35:58,499 INFO L226 Difference]: Without dead ends: 827 [2019-11-26 02:35:58,499 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:35:58,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2019-11-26 02:35:58,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2019-11-26 02:35:58,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-11-26 02:35:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 2722 transitions. [2019-11-26 02:35:58,525 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 2722 transitions. Word has length 42 [2019-11-26 02:35:58,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:35:58,526 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 2722 transitions. [2019-11-26 02:35:58,526 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:35:58,526 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 2722 transitions. [2019-11-26 02:35:58,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-26 02:35:58,529 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:35:58,529 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:35:58,529 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:35:58,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:35:58,530 INFO L82 PathProgramCache]: Analyzing trace with hash 235616253, now seen corresponding path program 3 times [2019-11-26 02:35:58,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:35:58,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982015875] [2019-11-26 02:35:58,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:35:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:35:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:35:58,691 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982015875] [2019-11-26 02:35:58,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:35:58,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:35:58,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998871753] [2019-11-26 02:35:58,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:35:58,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:35:58,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:35:58,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:35:58,693 INFO L87 Difference]: Start difference. First operand 827 states and 2722 transitions. Second operand 7 states. [2019-11-26 02:35:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:35:58,809 INFO L93 Difference]: Finished difference Result 1340 states and 4504 transitions. [2019-11-26 02:35:58,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:35:58,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2019-11-26 02:35:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:35:58,817 INFO L225 Difference]: With dead ends: 1340 [2019-11-26 02:35:58,817 INFO L226 Difference]: Without dead ends: 779 [2019-11-26 02:35:58,817 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:35:58,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2019-11-26 02:35:58,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2019-11-26 02:35:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 779 states. [2019-11-26 02:35:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 2578 transitions. [2019-11-26 02:35:58,841 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 2578 transitions. Word has length 42 [2019-11-26 02:35:58,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:35:58,842 INFO L462 AbstractCegarLoop]: Abstraction has 779 states and 2578 transitions. [2019-11-26 02:35:58,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:35:58,842 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 2578 transitions. [2019-11-26 02:35:58,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-26 02:35:58,844 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:35:58,844 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:35:58,844 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:35:58,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:35:58,845 INFO L82 PathProgramCache]: Analyzing trace with hash -501530371, now seen corresponding path program 4 times [2019-11-26 02:35:58,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:35:58,845 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898134074] [2019-11-26 02:35:58,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:35:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:35:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:35:58,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898134074] [2019-11-26 02:35:58,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:35:58,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:35:58,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75794706] [2019-11-26 02:35:58,943 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:35:58,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:35:58,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:35:58,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:35:58,944 INFO L87 Difference]: Start difference. First operand 779 states and 2578 transitions. Second operand 7 states. [2019-11-26 02:35:59,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:35:59,044 INFO L93 Difference]: Finished difference Result 617 states and 1984 transitions. [2019-11-26 02:35:59,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:35:59,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2019-11-26 02:35:59,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:35:59,045 INFO L225 Difference]: With dead ends: 617 [2019-11-26 02:35:59,045 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:35:59,045 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:35:59,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:35:59,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:35:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:35:59,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:35:59,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2019-11-26 02:35:59,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:35:59,046 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:35:59,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:35:59,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:35:59,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:35:59,049 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:35:59,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:35:59 BasicIcfg [2019-11-26 02:35:59,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:35:59,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:35:59,051 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:35:59,052 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:35:59,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:35:55" (3/4) ... [2019-11-26 02:35:59,055 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:35:59,063 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-26 02:35:59,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-26 02:35:59,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-26 02:35:59,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-26 02:35:59,069 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-26 02:35:59,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:35:59,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:35:59,111 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_33041b86-5fe5-4b0b-8bd3-fb2bfc7f6bc6/bin/utaipan/witness.graphml [2019-11-26 02:35:59,111 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:35:59,113 INFO L168 Benchmark]: Toolchain (without parser) took 5084.02 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 264.8 MB). Free memory was 939.3 MB in the beginning and 893.4 MB in the end (delta: 46.0 MB). Peak memory consumption was 310.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:35:59,114 INFO L168 Benchmark]: CDTParser took 4.71 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:35:59,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -138.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:35:59,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:35:59,115 INFO L168 Benchmark]: Boogie Preprocessor took 22.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:35:59,115 INFO L168 Benchmark]: RCFGBuilder took 393.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:35:59,116 INFO L168 Benchmark]: TraceAbstraction took 3954.00 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 146.3 MB). Free memory was 1.0 GB in the beginning and 896.5 MB in the end (delta: 151.2 MB). Peak memory consumption was 297.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:35:59,116 INFO L168 Benchmark]: Witness Printer took 60.06 ms. Allocated memory is still 1.3 GB. Free memory was 896.5 MB in the beginning and 893.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:35:59,119 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.71 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 604.37 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.5 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -138.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.80 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 393.91 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3954.00 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 146.3 MB). Free memory was 1.0 GB in the beginning and 896.5 MB in the end (delta: 151.2 MB). Peak memory consumption was 297.5 MB. Max. memory is 11.5 GB. * Witness Printer took 60.06 ms. Allocated memory is still 1.3 GB. Free memory was 896.5 MB in the beginning and 893.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 17 procedures, 115 locations, 1 error locations. Result: SAFE, OverallTime: 3.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 470 SDtfs, 836 SDslu, 1295 SDs, 0 SdLazy, 177 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5475occurred 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: 0.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 318 ConstructedInterpolants, 0 QuantifiedInterpolants, 39038 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...