./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_rmo.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/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 3132273b32663ab66f045741910f5adc6ffdfa99 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:00:06,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:00:06,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:00:06,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:00:06,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:00:06,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:00:06,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:00:06,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:00:06,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:00:06,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:00:06,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:00:06,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:00:06,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:00:06,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:00:06,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:00:06,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:00:06,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:00:06,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:00:06,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:00:06,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:00:06,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:00:06,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:00:06,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:00:06,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:00:06,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:00:06,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:00:06,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:00:06,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:00:06,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:00:06,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:00:06,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:00:06,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:00:06,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:00:06,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:00:06,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:00:06,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:00:06,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:00:06,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:00:06,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:00:06,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:00:06,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:00:06,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:00:06,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:00:06,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:00:06,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:00:06,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:00:06,541 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:00:06,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:00:06,542 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:00:06,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:00:06,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:00:06,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:00:06,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:00:06,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:00:06,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:00:06,545 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:00:06,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:00:06,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:00:06,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:00:06,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:00:06,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:00:06,546 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:00:06,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:00:06,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:00:06,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:00:06,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:00:06,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:00:06,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:00:06,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:00:06,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:00:06,548 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:00:06,548 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_e00296a5-2aaf-4b06-9a6c-65848c59f403/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3132273b32663ab66f045741910f5adc6ffdfa99 [2020-12-01 15:00:06,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:00:06,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:00:06,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:00:06,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:00:06,846 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:00:06,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe037_rmo.oepc.i [2020-12-01 15:00:06,932 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/data/5faad5b5b/de1ef0c1ef984df7a7021224c826f479/FLAGeed2d0b30 [2020-12-01 15:00:07,456 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:00:07,457 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/sv-benchmarks/c/pthread-wmm/safe037_rmo.oepc.i [2020-12-01 15:00:07,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/data/5faad5b5b/de1ef0c1ef984df7a7021224c826f479/FLAGeed2d0b30 [2020-12-01 15:00:07,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/data/5faad5b5b/de1ef0c1ef984df7a7021224c826f479 [2020-12-01 15:00:07,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:00:07,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:00:07,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:00:07,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:00:07,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:00:07,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:00:07" (1/1) ... [2020-12-01 15:00:07,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd1bd89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:07, skipping insertion in model container [2020-12-01 15:00:07,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:00:07" (1/1) ... [2020-12-01 15:00:07,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:00:07,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:00:08,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:00:08,292 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:00:08,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:00:08,446 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:00:08,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08 WrapperNode [2020-12-01 15:00:08,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:00:08,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:00:08,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:00:08,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:00:08,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... [2020-12-01 15:00:08,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... [2020-12-01 15:00:08,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:00:08,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:00:08,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:00:08,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:00:08,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... [2020-12-01 15:00:08,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... [2020-12-01 15:00:08,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... [2020-12-01 15:00:08,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... [2020-12-01 15:00:08,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... [2020-12-01 15:00:08,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... [2020-12-01 15:00:08,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... [2020-12-01 15:00:08,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:00:08,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:00:08,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:00:08,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:00:08,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/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 [2020-12-01 15:00:08,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 15:00:08,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-01 15:00:08,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:00:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:00:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-01 15:00:08,591 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-01 15:00:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-01 15:00:08,591 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-01 15:00:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-01 15:00:08,592 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-01 15:00:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:00:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-01 15:00:08,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:00:08,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:00:08,594 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-01 15:00:09,019 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:00:09,019 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 15:00:09,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:00:09 BoogieIcfgContainer [2020-12-01 15:00:09,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:00:09,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:00:09,039 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:00:09,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:00:09,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:00:07" (1/3) ... [2020-12-01 15:00:09,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19411ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:00:09, skipping insertion in model container [2020-12-01 15:00:09,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:00:08" (2/3) ... [2020-12-01 15:00:09,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19411ec7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:00:09, skipping insertion in model container [2020-12-01 15:00:09,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:00:09" (3/3) ... [2020-12-01 15:00:09,046 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_rmo.oepc.i [2020-12-01 15:00:09,060 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-01 15:00:09,060 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:00:09,063 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:00:09,063 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-01 15:00:09,087 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,088 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,088 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,089 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,089 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,090 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,091 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,091 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,093 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,093 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,094 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,094 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,095 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,095 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,095 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,095 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,097 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,098 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,098 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,102 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,102 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,103 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,103 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,105 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,105 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,105 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-01 15:00:09,107 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-01 15:00:09,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-01 15:00:09,137 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:00:09,138 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:00:09,138 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:00:09,138 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:00:09,138 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:00:09,138 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:00:09,138 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:00:09,138 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:00:09,150 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-01 15:00:09,152 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-12-01 15:00:09,155 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-12-01 15:00:09,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-12-01 15:00:09,200 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-12-01 15:00:09,200 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-01 15:00:09,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-12-01 15:00:09,207 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-12-01 15:00:12,477 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-01 15:00:12,785 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-01 15:00:13,175 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-12-01 15:00:13,267 INFO L131 LiptonReduction]: Checked pairs total: 2901 [2020-12-01 15:00:13,268 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-12-01 15:00:13,277 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-01 15:00:13,307 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-01 15:00:13,308 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-01 15:00:13,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:00:13,316 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:00:13,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:00:13,317 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:00:13,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:00:13,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1054042143, now seen corresponding path program 1 times [2020-12-01 15:00:13,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:00:13,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682376862] [2020-12-01 15:00:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:00:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:00:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:00:13,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682376862] [2020-12-01 15:00:13,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:00:13,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:00:13,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193188851] [2020-12-01 15:00:13,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:00:13,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:00:13,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:00:13,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:00:13,649 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-12-01 15:00:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:00:13,725 INFO L93 Difference]: Finished difference Result 281 states and 711 transitions. [2020-12-01 15:00:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:00:13,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-01 15:00:13,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:00:13,740 INFO L225 Difference]: With dead ends: 281 [2020-12-01 15:00:13,740 INFO L226 Difference]: Without dead ends: 180 [2020-12-01 15:00:13,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:00:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-01 15:00:13,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-12-01 15:00:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-01 15:00:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-12-01 15:00:13,802 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 8 [2020-12-01 15:00:13,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:00:13,802 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-12-01 15:00:13,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:00:13,803 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-12-01 15:00:13,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:00:13,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:00:13,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:00:13,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:00:13,805 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:00:13,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:00:13,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1550829140, now seen corresponding path program 1 times [2020-12-01 15:00:13,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:00:13,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284290674] [2020-12-01 15:00:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:00:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:00:13,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:00:13,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284290674] [2020-12-01 15:00:13,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:00:13,893 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:00:13,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030636497] [2020-12-01 15:00:13,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 15:00:13,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:00:13,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 15:00:13,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:00:13,897 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 5 states. [2020-12-01 15:00:13,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:00:13,938 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-12-01 15:00:13,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:00:13,939 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-01 15:00:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:00:13,941 INFO L225 Difference]: With dead ends: 163 [2020-12-01 15:00:13,941 INFO L226 Difference]: Without dead ends: 126 [2020-12-01 15:00:13,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:00:13,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-01 15:00:13,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-12-01 15:00:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-01 15:00:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-12-01 15:00:13,965 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-12-01 15:00:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:00:13,966 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-12-01 15:00:13,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 15:00:13,967 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-12-01 15:00:13,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:00:13,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:00:13,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:00:13,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:00:13,972 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:00:13,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:00:13,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1926964344, now seen corresponding path program 1 times [2020-12-01 15:00:13,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:00:13,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030034659] [2020-12-01 15:00:13,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:00:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:00:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:00:14,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030034659] [2020-12-01 15:00:14,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:00:14,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:00:14,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411140800] [2020-12-01 15:00:14,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:00:14,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:00:14,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:00:14,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:00:14,112 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 6 states. [2020-12-01 15:00:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:00:14,181 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-12-01 15:00:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:00:14,184 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-01 15:00:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:00:14,185 INFO L225 Difference]: With dead ends: 118 [2020-12-01 15:00:14,187 INFO L226 Difference]: Without dead ends: 108 [2020-12-01 15:00:14,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:00:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-01 15:00:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-12-01 15:00:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-01 15:00:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-12-01 15:00:14,202 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-12-01 15:00:14,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:00:14,203 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-12-01 15:00:14,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:00:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-12-01 15:00:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:00:14,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:00:14,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:00:14,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:00:14,205 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:00:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:00:14,206 INFO L82 PathProgramCache]: Analyzing trace with hash 337836795, now seen corresponding path program 1 times [2020-12-01 15:00:14,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:00:14,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307434309] [2020-12-01 15:00:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:00:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:00:14,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:00:14,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307434309] [2020-12-01 15:00:14,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:00:14,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:00:14,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381809923] [2020-12-01 15:00:14,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:00:14,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:00:14,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:00:14,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:00:14,282 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-12-01 15:00:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:00:14,304 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-12-01 15:00:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:00:14,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:00:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:00:14,307 INFO L225 Difference]: With dead ends: 133 [2020-12-01 15:00:14,307 INFO L226 Difference]: Without dead ends: 54 [2020-12-01 15:00:14,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:00:14,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-01 15:00:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-01 15:00:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-01 15:00:14,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-12-01 15:00:14,321 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-12-01 15:00:14,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:00:14,324 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-12-01 15:00:14,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:00:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-12-01 15:00:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:00:14,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:00:14,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:00:14,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:00:14,328 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:00:14,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:00:14,329 INFO L82 PathProgramCache]: Analyzing trace with hash 64468355, now seen corresponding path program 2 times [2020-12-01 15:00:14,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:00:14,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443453510] [2020-12-01 15:00:14,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:00:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:00:14,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:00:14,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443453510] [2020-12-01 15:00:14,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:00:14,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:00:14,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636284080] [2020-12-01 15:00:14,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:00:14,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:00:14,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:00:14,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:00:14,437 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-12-01 15:00:14,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:00:14,458 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-12-01 15:00:14,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:00:14,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:00:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:00:14,459 INFO L225 Difference]: With dead ends: 67 [2020-12-01 15:00:14,460 INFO L226 Difference]: Without dead ends: 30 [2020-12-01 15:00:14,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:00:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-01 15:00:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-01 15:00:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-01 15:00:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-12-01 15:00:14,464 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-12-01 15:00:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:00:14,465 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-12-01 15:00:14,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:00:14,465 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-12-01 15:00:14,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:00:14,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:00:14,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:00:14,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:00:14,467 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:00:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:00:14,467 INFO L82 PathProgramCache]: Analyzing trace with hash -339277395, now seen corresponding path program 3 times [2020-12-01 15:00:14,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:00:14,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292748138] [2020-12-01 15:00:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:00:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:00:14,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:00:14,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292748138] [2020-12-01 15:00:14,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:00:14,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:00:14,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722481393] [2020-12-01 15:00:14,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:00:14,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:00:14,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:00:14,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:00:14,540 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-12-01 15:00:14,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:00:14,551 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-12-01 15:00:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:00:14,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-01 15:00:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:00:14,552 INFO L225 Difference]: With dead ends: 29 [2020-12-01 15:00:14,552 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:00:14,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 15:00:14,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:00:14,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:00:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:00:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:00:14,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-01 15:00:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:00:14,554 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:00:14,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:00:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:00:14,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:00:14,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:00:14,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:00:14 BasicIcfg [2020-12-01 15:00:14,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:00:14,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:00:14,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:00:14,560 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:00:14,560 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:00:09" (3/4) ... [2020-12-01 15:00:14,563 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:00:14,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-01 15:00:14,571 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-01 15:00:14,572 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-01 15:00:14,576 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-01 15:00:14,577 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:00:14,577 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:00:14,577 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:00:14,625 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e00296a5-2aaf-4b06-9a6c-65848c59f403/bin/uautomizer/witness.graphml [2020-12-01 15:00:14,626 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:00:14,627 INFO L168 Benchmark]: Toolchain (without parser) took 6872.01 ms. Allocated memory was 107.0 MB in the beginning and 188.7 MB in the end (delta: 81.8 MB). Free memory was 71.1 MB in the beginning and 117.1 MB in the end (delta: -46.0 MB). Peak memory consumption was 35.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:00:14,636 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 107.0 MB. Free memory was 80.4 MB in the beginning and 80.3 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:00:14,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.80 ms. Allocated memory is still 107.0 MB. Free memory was 70.9 MB in the beginning and 62.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:00:14,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 107.0 MB. Free memory was 62.5 MB in the beginning and 60.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:00:14,637 INFO L168 Benchmark]: Boogie Preprocessor took 23.05 ms. Allocated memory is still 107.0 MB. Free memory was 60.8 MB in the beginning and 59.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:00:14,638 INFO L168 Benchmark]: RCFGBuilder took 501.78 ms. Allocated memory is still 107.0 MB. Free memory was 59.2 MB in the beginning and 81.2 MB in the end (delta: -22.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-12-01 15:00:14,639 INFO L168 Benchmark]: TraceAbstraction took 5519.64 ms. Allocated memory was 107.0 MB in the beginning and 188.7 MB in the end (delta: 81.8 MB). Free memory was 81.2 MB in the beginning and 119.2 MB in the end (delta: -38.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:00:14,639 INFO L168 Benchmark]: Witness Printer took 66.70 ms. Allocated memory is still 188.7 MB. Free memory was 119.2 MB in the beginning and 117.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:00:14,642 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 107.0 MB. Free memory was 80.4 MB in the beginning and 80.3 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 687.80 ms. Allocated memory is still 107.0 MB. Free memory was 70.9 MB in the beginning and 62.5 MB in the end (delta: 8.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.78 ms. Allocated memory is still 107.0 MB. Free memory was 62.5 MB in the beginning and 60.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.05 ms. Allocated memory is still 107.0 MB. Free memory was 60.8 MB in the beginning and 59.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 501.78 ms. Allocated memory is still 107.0 MB. Free memory was 59.2 MB in the beginning and 81.2 MB in the end (delta: -22.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5519.64 ms. Allocated memory was 107.0 MB in the beginning and 188.7 MB in the end (delta: 81.8 MB). Free memory was 81.2 MB in the beginning and 119.2 MB in the end (delta: -38.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. * Witness Printer took 66.70 ms. Allocated memory is still 188.7 MB. Free memory was 119.2 MB in the beginning and 117.1 MB in the end (delta: 2.1 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 950 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 TotalNumberOfCompositions, 2901 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, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 115 SDtfs, 168 SDslu, 151 SDs, 0 SdLazy, 57 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...