./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 46e60384d076cd36e28bd9e22b5f4fd53aad4615 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:00:50,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:00:50,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:00:50,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:00:50,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:00:50,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:00:50,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:00:50,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:00:50,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:00:50,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:00:50,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:00:50,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:00:50,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:00:50,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:00:50,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:00:50,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:00:50,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:00:50,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:00:50,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:00:50,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:00:50,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:00:50,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:00:50,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:00:50,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:00:50,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:00:50,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:00:50,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:00:50,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:00:50,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:00:50,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:00:50,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:00:50,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:00:50,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:00:50,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:00:50,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:00:50,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:00:50,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:00:50,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:00:50,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:00:50,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:00:50,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:00:50,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:00:50,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:00:50,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:00:50,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:00:50,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:00:50,508 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:00:50,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:00:50,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:00:50,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:00:50,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:00:50,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:00:50,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:00:50,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:00:50,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:00:50,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:00:50,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:00:50,510 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:00:50,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:00:50,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:00:50,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:00:50,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:00:50,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:00:50,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:00:50,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:00:50,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:00:50,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:00:50,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:00:50,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:00:50,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:00:50,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:00:50,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46e60384d076cd36e28bd9e22b5f4fd53aad4615 [2020-11-29 21:00:50,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:00:50,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:00:50,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:00:50,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:00:50,794 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:00:50,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2020-11-29 21:00:50,859 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/data/a6d03bcf1/00505feaecb341e68853404293f556a5/FLAG2f969148f [2020-11-29 21:00:51,467 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:00:51,467 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/sv-benchmarks/c/pthread-wmm/safe015_tso.oepc.i [2020-11-29 21:00:51,485 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/data/a6d03bcf1/00505feaecb341e68853404293f556a5/FLAG2f969148f [2020-11-29 21:00:51,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/data/a6d03bcf1/00505feaecb341e68853404293f556a5 [2020-11-29 21:00:51,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:00:51,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:00:51,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:00:51,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:00:51,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:00:51,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:00:51" (1/1) ... [2020-11-29 21:00:51,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fa59551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:51, skipping insertion in model container [2020-11-29 21:00:51,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:00:51" (1/1) ... [2020-11-29 21:00:51,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:00:51,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:00:52,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:00:52,172 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:00:52,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:00:52,322 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:00:52,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52 WrapperNode [2020-11-29 21:00:52,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:00:52,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:00:52,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:00:52,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:00:52,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... [2020-11-29 21:00:52,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... [2020-11-29 21:00:52,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:00:52,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:00:52,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:00:52,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:00:52,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... [2020-11-29 21:00:52,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... [2020-11-29 21:00:52,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... [2020-11-29 21:00:52,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... [2020-11-29 21:00:52,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... [2020-11-29 21:00:52,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... [2020-11-29 21:00:52,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... [2020-11-29 21:00:52,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:00:52,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:00:52,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:00:52,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:00:52,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/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 [2020-11-29 21:00:52,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:00:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 21:00:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:00:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:00:52,482 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 21:00:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 21:00:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 21:00:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 21:00:52,483 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 21:00:52,483 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 21:00:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:00:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 21:00:52,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:00:52,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:00:52,486 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-29 21:00:52,976 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:00:52,976 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 21:00:52,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:00:52 BoogieIcfgContainer [2020-11-29 21:00:52,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:00:52,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:00:52,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:00:52,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:00:52,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:00:51" (1/3) ... [2020-11-29 21:00:52,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478e7e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:00:52, skipping insertion in model container [2020-11-29 21:00:52,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:52" (2/3) ... [2020-11-29 21:00:52,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478e7e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:00:52, skipping insertion in model container [2020-11-29 21:00:52,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:00:52" (3/3) ... [2020-11-29 21:00:52,993 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2020-11-29 21:00:53,010 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 21:00:53,011 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:00:53,014 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 21:00:53,015 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 21:00:53,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,059 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,059 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,061 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,061 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,062 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,062 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,063 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,063 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,064 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,065 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,069 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,070 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,070 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,070 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,079 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,079 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,083 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,083 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,083 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,083 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 21:00:53,087 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 21:00:53,103 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 21:00:53,139 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:00:53,140 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:00:53,140 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:00:53,140 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:00:53,140 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:00:53,140 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:00:53,141 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:00:53,141 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:00:53,159 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 21:00:53,162 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-29 21:00:53,165 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-29 21:00:53,167 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-29 21:00:53,234 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-29 21:00:53,235 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 21:00:53,239 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-29 21:00:53,243 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 21:00:55,236 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-29 21:00:55,395 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-29 21:00:55,892 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-29 21:00:56,004 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-29 21:00:56,008 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-11-29 21:00:56,009 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-29 21:00:56,014 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-29 21:00:56,038 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-29 21:00:56,040 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-29 21:00:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 21:00:56,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:56,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:56,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:56,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:56,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-11-29 21:00:56,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:56,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671413969] [2020-11-29 21:00:56,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:56,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671413969] [2020-11-29 21:00:56,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:56,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 21:00:56,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898806756] [2020-11-29 21:00:56,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:00:56,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:56,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:00:56,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:56,342 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-29 21:00:56,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:56,426 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-29 21:00:56,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:00:56,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 21:00:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:56,452 INFO L225 Difference]: With dead ends: 282 [2020-11-29 21:00:56,453 INFO L226 Difference]: Without dead ends: 218 [2020-11-29 21:00:56,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:56,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-29 21:00:56,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-29 21:00:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-29 21:00:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-29 21:00:56,549 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-29 21:00:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:56,551 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-29 21:00:56,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:00:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-29 21:00:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:00:56,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:56,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:56,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:00:56,556 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:56,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1771488223, now seen corresponding path program 1 times [2020-11-29 21:00:56,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:56,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426469834] [2020-11-29 21:00:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:56,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426469834] [2020-11-29 21:00:56,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:56,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:00:56,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799703241] [2020-11-29 21:00:56,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:00:56,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:56,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:00:56,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:56,659 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-11-29 21:00:56,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:56,698 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-11-29 21:00:56,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:00:56,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 21:00:56,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:56,705 INFO L225 Difference]: With dead ends: 202 [2020-11-29 21:00:56,705 INFO L226 Difference]: Without dead ends: 202 [2020-11-29 21:00:56,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:56,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-29 21:00:56,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-29 21:00:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-29 21:00:56,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-29 21:00:56,741 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-11-29 21:00:56,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:56,741 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-29 21:00:56,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:00:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-29 21:00:56,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 21:00:56,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:56,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:56,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:00:56,745 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:56,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:56,746 INFO L82 PathProgramCache]: Analyzing trace with hash -918442191, now seen corresponding path program 1 times [2020-11-29 21:00:56,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:56,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535359704] [2020-11-29 21:00:56,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:56,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535359704] [2020-11-29 21:00:56,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:56,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 21:00:56,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667099094] [2020-11-29 21:00:56,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:00:56,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:56,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:00:56,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:56,830 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-29 21:00:56,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:56,845 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-11-29 21:00:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:00:56,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 21:00:56,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:56,849 INFO L225 Difference]: With dead ends: 198 [2020-11-29 21:00:56,849 INFO L226 Difference]: Without dead ends: 198 [2020-11-29 21:00:56,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:56,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-29 21:00:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-11-29 21:00:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-11-29 21:00:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-11-29 21:00:56,873 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-11-29 21:00:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:56,873 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-11-29 21:00:56,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:00:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-11-29 21:00:56,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:00:56,882 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:56,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:56,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:00:56,882 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:56,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:56,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061887, now seen corresponding path program 1 times [2020-11-29 21:00:56,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:56,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384294164] [2020-11-29 21:00:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:56,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384294164] [2020-11-29 21:00:56,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:56,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 21:00:56,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311699427] [2020-11-29 21:00:56,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:00:56,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:56,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:00:56,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:56,955 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-11-29 21:00:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:56,966 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-11-29 21:00:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:00:56,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-29 21:00:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:56,971 INFO L225 Difference]: With dead ends: 192 [2020-11-29 21:00:56,971 INFO L226 Difference]: Without dead ends: 192 [2020-11-29 21:00:56,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:56,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-29 21:00:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-11-29 21:00:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-29 21:00:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-11-29 21:00:56,986 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-11-29 21:00:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:56,987 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-11-29 21:00:56,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:00:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-11-29 21:00:56,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:00:56,993 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:56,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:56,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:00:56,994 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:56,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:56,995 INFO L82 PathProgramCache]: Analyzing trace with hash 2114610558, now seen corresponding path program 1 times [2020-11-29 21:00:56,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:56,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372537005] [2020-11-29 21:00:56,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:57,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372537005] [2020-11-29 21:00:57,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:57,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:00:57,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911347710] [2020-11-29 21:00:57,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 21:00:57,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:57,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 21:00:57,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:57,071 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 3 states. [2020-11-29 21:00:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:57,092 INFO L93 Difference]: Finished difference Result 248 states and 635 transitions. [2020-11-29 21:00:57,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 21:00:57,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-29 21:00:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:57,094 INFO L225 Difference]: With dead ends: 248 [2020-11-29 21:00:57,095 INFO L226 Difference]: Without dead ends: 200 [2020-11-29 21:00:57,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 21:00:57,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-29 21:00:57,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-11-29 21:00:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-29 21:00:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 475 transitions. [2020-11-29 21:00:57,125 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 475 transitions. Word has length 12 [2020-11-29 21:00:57,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:57,125 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 475 transitions. [2020-11-29 21:00:57,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 21:00:57,126 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 475 transitions. [2020-11-29 21:00:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:00:57,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:57,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:57,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:00:57,127 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:57,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2115787814, now seen corresponding path program 1 times [2020-11-29 21:00:57,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:57,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464223448] [2020-11-29 21:00:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:57,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464223448] [2020-11-29 21:00:57,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:57,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:00:57,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181195244] [2020-11-29 21:00:57,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:00:57,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:57,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:00:57,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:00:57,203 INFO L87 Difference]: Start difference. First operand 188 states and 475 transitions. Second operand 4 states. [2020-11-29 21:00:57,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:57,242 INFO L93 Difference]: Finished difference Result 260 states and 643 transitions. [2020-11-29 21:00:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:00:57,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 21:00:57,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:57,245 INFO L225 Difference]: With dead ends: 260 [2020-11-29 21:00:57,245 INFO L226 Difference]: Without dead ends: 188 [2020-11-29 21:00:57,245 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 [2020-11-29 21:00:57,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-11-29 21:00:57,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-11-29 21:00:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-29 21:00:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 467 transitions. [2020-11-29 21:00:57,257 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 467 transitions. Word has length 12 [2020-11-29 21:00:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:57,257 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 467 transitions. [2020-11-29 21:00:57,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:00:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 467 transitions. [2020-11-29 21:00:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 21:00:57,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:57,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:57,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 21:00:57,259 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:57,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 2 times [2020-11-29 21:00:57,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:57,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199131170] [2020-11-29 21:00:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:57,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:57,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199131170] [2020-11-29 21:00:57,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:57,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:00:57,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335513874] [2020-11-29 21:00:57,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:00:57,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:57,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:00:57,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:00:57,348 INFO L87 Difference]: Start difference. First operand 188 states and 467 transitions. Second operand 4 states. [2020-11-29 21:00:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:57,395 INFO L93 Difference]: Finished difference Result 221 states and 507 transitions. [2020-11-29 21:00:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:00:57,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 21:00:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:57,398 INFO L225 Difference]: With dead ends: 221 [2020-11-29 21:00:57,398 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 21:00:57,398 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 [2020-11-29 21:00:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 21:00:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-11-29 21:00:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-29 21:00:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 352 transitions. [2020-11-29 21:00:57,406 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 352 transitions. Word has length 12 [2020-11-29 21:00:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:57,406 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 352 transitions. [2020-11-29 21:00:57,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:00:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 352 transitions. [2020-11-29 21:00:57,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 21:00:57,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:57,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:57,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 21:00:57,408 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:57,408 INFO L82 PathProgramCache]: Analyzing trace with hash 596662620, now seen corresponding path program 1 times [2020-11-29 21:00:57,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:57,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212774073] [2020-11-29 21:00:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:57,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212774073] [2020-11-29 21:00:57,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:57,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:00:57,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809084206] [2020-11-29 21:00:57,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:00:57,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:57,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:00:57,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:00:57,462 INFO L87 Difference]: Start difference. First operand 157 states and 352 transitions. Second operand 5 states. [2020-11-29 21:00:57,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:57,518 INFO L93 Difference]: Finished difference Result 159 states and 336 transitions. [2020-11-29 21:00:57,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:00:57,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 21:00:57,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:57,520 INFO L225 Difference]: With dead ends: 159 [2020-11-29 21:00:57,520 INFO L226 Difference]: Without dead ends: 122 [2020-11-29 21:00:57,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:00:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-29 21:00:57,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-29 21:00:57,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-29 21:00:57,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 253 transitions. [2020-11-29 21:00:57,526 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 253 transitions. Word has length 13 [2020-11-29 21:00:57,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:57,526 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 253 transitions. [2020-11-29 21:00:57,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:00:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 253 transitions. [2020-11-29 21:00:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 21:00:57,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:57,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:57,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 21:00:57,528 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:57,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-11-29 21:00:57,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:57,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848677938] [2020-11-29 21:00:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:57,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848677938] [2020-11-29 21:00:57,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:57,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:00:57,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64818180] [2020-11-29 21:00:57,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:00:57,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:57,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:00:57,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:00:57,615 INFO L87 Difference]: Start difference. First operand 122 states and 253 transitions. Second operand 6 states. [2020-11-29 21:00:57,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:57,679 INFO L93 Difference]: Finished difference Result 118 states and 243 transitions. [2020-11-29 21:00:57,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:00:57,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-29 21:00:57,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:57,681 INFO L225 Difference]: With dead ends: 118 [2020-11-29 21:00:57,681 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 21:00:57,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:00:57,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 21:00:57,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-29 21:00:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:00:57,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-11-29 21:00:57,684 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-11-29 21:00:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:57,684 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-11-29 21:00:57,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:00:57,684 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-11-29 21:00:57,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 21:00:57,685 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:57,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:57,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 21:00:57,685 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:57,686 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-11-29 21:00:57,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:57,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053139494] [2020-11-29 21:00:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:57,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053139494] [2020-11-29 21:00:57,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:57,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:00:57,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088437274] [2020-11-29 21:00:57,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:00:57,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:57,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:00:57,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:00:57,736 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-11-29 21:00:57,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:57,761 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-11-29 21:00:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:00:57,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 21:00:57,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:57,762 INFO L225 Difference]: With dead ends: 63 [2020-11-29 21:00:57,763 INFO L226 Difference]: Without dead ends: 35 [2020-11-29 21:00:57,763 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 [2020-11-29 21:00:57,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-29 21:00:57,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-29 21:00:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 21:00:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-11-29 21:00:57,765 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-11-29 21:00:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:57,765 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-11-29 21:00:57,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:00:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-11-29 21:00:57,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 21:00:57,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:57,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:57,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 21:00:57,766 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:00:57,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:57,767 INFO L82 PathProgramCache]: Analyzing trace with hash -281731452, now seen corresponding path program 2 times [2020-11-29 21:00:57,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:57,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868910647] [2020-11-29 21:00:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:57,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868910647] [2020-11-29 21:00:57,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:57,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:00:57,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075014502] [2020-11-29 21:00:57,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:00:57,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:57,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:00:57,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:00:57,814 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-11-29 21:00:57,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:57,836 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-11-29 21:00:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:00:57,836 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-29 21:00:57,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:57,837 INFO L225 Difference]: With dead ends: 34 [2020-11-29 21:00:57,837 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:00:57,837 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 [2020-11-29 21:00:57,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:00:57,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:00:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:00:57,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:00:57,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-29 21:00:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:57,838 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:00:57,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:00:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:00:57,838 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:00:57,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 21:00:57,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:00:57 BasicIcfg [2020-11-29 21:00:57,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:00:57,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:00:57,842 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:00:57,842 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:00:57,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:00:52" (3/4) ... [2020-11-29 21:00:57,845 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:00:57,855 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 21:00:57,856 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 21:00:57,856 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 21:00:57,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 21:00:57,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:00:57,863 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:00:57,865 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:00:57,919 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0208c3db-cc5d-4bd8-8ab3-d162298505ee/bin/uautomizer/witness.graphml [2020-11-29 21:00:57,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:00:57,921 INFO L168 Benchmark]: Toolchain (without parser) took 6206.19 ms. Allocated memory was 102.8 MB in the beginning and 163.6 MB in the end (delta: 60.8 MB). Free memory was 77.0 MB in the beginning and 56.7 MB in the end (delta: 20.3 MB). Peak memory consumption was 79.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:57,921 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:00:57,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 608.80 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 46.1 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:57,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.08 ms. Allocated memory is still 102.8 MB. Free memory was 46.1 MB in the beginning and 44.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:00:57,922 INFO L168 Benchmark]: Boogie Preprocessor took 28.30 ms. Allocated memory is still 102.8 MB. Free memory was 44.3 MB in the beginning and 42.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:57,923 INFO L168 Benchmark]: RCFGBuilder took 574.43 ms. Allocated memory is still 102.8 MB. Free memory was 42.9 MB in the beginning and 74.5 MB in the end (delta: -31.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:57,923 INFO L168 Benchmark]: TraceAbstraction took 4856.98 ms. Allocated memory was 102.8 MB in the beginning and 163.6 MB in the end (delta: 60.8 MB). Free memory was 74.0 MB in the beginning and 59.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 74.8 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:57,924 INFO L168 Benchmark]: Witness Printer took 78.05 ms. Allocated memory is still 163.6 MB. Free memory was 59.9 MB in the beginning and 56.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:00:57,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 81.8 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 608.80 ms. Allocated memory is still 102.8 MB. Free memory was 77.0 MB in the beginning and 46.1 MB in the end (delta: 30.9 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.08 ms. Allocated memory is still 102.8 MB. Free memory was 46.1 MB in the beginning and 44.3 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.30 ms. Allocated memory is still 102.8 MB. Free memory was 44.3 MB in the beginning and 42.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 574.43 ms. Allocated memory is still 102.8 MB. Free memory was 42.9 MB in the beginning and 74.5 MB in the end (delta: -31.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4856.98 ms. Allocated memory was 102.8 MB in the beginning and 163.6 MB in the end (delta: 60.8 MB). Free memory was 74.0 MB in the beginning and 59.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 74.8 MB. Max. memory is 16.1 GB. * Witness Printer took 78.05 ms. Allocated memory is still 163.6 MB. Free memory was 59.9 MB in the beginning and 56.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 891 VarBasedMoverChecksPositive, 40 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 55 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.8s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: 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 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 220 SDtfs, 143 SDslu, 240 SDs, 0 SdLazy, 133 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 4359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...