./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.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_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/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 ffd27eb51bbbfe3eeef30785e40b2473c24c7f3d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 18:38:07,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:38:07,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:38:07,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:38:07,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:38:07,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:38:07,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:38:07,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:38:07,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:38:07,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:38:07,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:38:07,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:38:07,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:38:07,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:38:07,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:38:07,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:38:07,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:38:07,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:38:07,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:38:07,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:38:07,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:38:07,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:38:07,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:38:07,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:38:07,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:38:07,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:38:07,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:38:07,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:38:07,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:38:07,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:38:07,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:38:07,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:38:07,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:38:07,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:38:07,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:38:07,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:38:07,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:38:07,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:38:07,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:38:07,373 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:38:07,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:38:07,377 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:38:07,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:38:07,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:38:07,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:38:07,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:38:07,420 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:38:07,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:38:07,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:38:07,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:38:07,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:38:07,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:38:07,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:38:07,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:38:07,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:38:07,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:38:07,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:38:07,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:38:07,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:38:07,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:38:07,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:38:07,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:38:07,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:38:07,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:38:07,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:38:07,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:38:07,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:38:07,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:38:07,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:38:07,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:38:07,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:38:07,427 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_0be37a25-84c5-40b5-9fb6-280b652ce04f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ffd27eb51bbbfe3eeef30785e40b2473c24c7f3d [2020-11-29 18:38:07,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:38:07,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:38:07,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:38:07,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:38:07,762 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:38:07,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i [2020-11-29 18:38:07,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/data/48b00b167/7b9d5db42b87402aa53da0bb55c12d5b/FLAG85488fcae [2020-11-29 18:38:08,355 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:38:08,355 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/sv-benchmarks/c/pthread-wmm/safe030_tso.opt.i [2020-11-29 18:38:08,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/data/48b00b167/7b9d5db42b87402aa53da0bb55c12d5b/FLAG85488fcae [2020-11-29 18:38:08,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/data/48b00b167/7b9d5db42b87402aa53da0bb55c12d5b [2020-11-29 18:38:08,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:38:08,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:38:08,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:38:08,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:38:08,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:38:08,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:38:08" (1/1) ... [2020-11-29 18:38:08,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@887594e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:08, skipping insertion in model container [2020-11-29 18:38:08,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:38:08" (1/1) ... [2020-11-29 18:38:08,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:38:08,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:38:09,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:38:09,241 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:38:09,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:38:09,412 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:38:09,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09 WrapperNode [2020-11-29 18:38:09,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:38:09,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:38:09,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:38:09,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:38:09,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... [2020-11-29 18:38:09,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... [2020-11-29 18:38:09,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:38:09,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:38:09,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:38:09,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:38:09,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... [2020-11-29 18:38:09,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... [2020-11-29 18:38:09,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... [2020-11-29 18:38:09,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... [2020-11-29 18:38:09,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... [2020-11-29 18:38:09,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... [2020-11-29 18:38:09,515 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... [2020-11-29 18:38:09,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:38:09,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:38:09,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:38:09,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:38:09,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/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 18:38:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 18:38:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-29 18:38:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:38:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:38:09,603 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-29 18:38:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-29 18:38:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-29 18:38:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-29 18:38:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-29 18:38:09,604 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-29 18:38:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:38:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-29 18:38:09,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:38:09,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:38:09,607 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 18:38:10,045 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:38:10,046 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-29 18:38:10,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:38:10 BoogieIcfgContainer [2020-11-29 18:38:10,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:38:10,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:38:10,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:38:10,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:38:10,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:38:08" (1/3) ... [2020-11-29 18:38:10,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c38c99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:38:10, skipping insertion in model container [2020-11-29 18:38:10,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:38:09" (2/3) ... [2020-11-29 18:38:10,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c38c99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:38:10, skipping insertion in model container [2020-11-29 18:38:10,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:38:10" (3/3) ... [2020-11-29 18:38:10,057 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.opt.i [2020-11-29 18:38:10,070 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 18:38:10,070 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:38:10,076 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:38:10,077 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 18:38:10,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,105 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,105 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,106 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,106 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,107 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,107 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,107 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,108 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,109 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,109 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,110 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,113 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,113 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,121 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,122 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,122 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,126 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,126 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,127 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 18:38:10,129 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-29 18:38:10,142 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 18:38:10,165 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:38:10,165 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:38:10,165 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:38:10,165 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:38:10,166 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:38:10,166 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:38:10,166 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:38:10,166 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:38:10,179 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 18:38:10,181 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-29 18:38:10,184 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 169 flow [2020-11-29 18:38:10,186 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 169 flow [2020-11-29 18:38:10,236 INFO L129 PetriNetUnfolder]: 3/74 cut-off events. [2020-11-29 18:38:10,236 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-29 18:38:10,240 INFO L80 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 3/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-29 18:38:10,244 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-29 18:38:12,201 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-11-29 18:38:12,540 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-29 18:38:12,658 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-11-29 18:38:12,720 INFO L131 LiptonReduction]: Checked pairs total: 3066 [2020-11-29 18:38:12,720 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-11-29 18:38:12,726 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-29 18:38:12,765 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-29 18:38:12,767 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-29 18:38:12,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 18:38:12,774 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:38:12,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:38:12,775 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:38:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:12,779 INFO L82 PathProgramCache]: Analyzing trace with hash 147242941, now seen corresponding path program 1 times [2020-11-29 18:38:12,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:12,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840401114] [2020-11-29 18:38:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:12,939 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 18:38:12,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840401114] [2020-11-29 18:38:12,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:38:12,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:38:12,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495615367] [2020-11-29 18:38:12,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:38:12,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:38:12,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:38:12,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:38:12,962 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-29 18:38:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:38:12,997 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-29 18:38:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:38:12,998 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 18:38:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:38:13,024 INFO L225 Difference]: With dead ends: 362 [2020-11-29 18:38:13,024 INFO L226 Difference]: Without dead ends: 298 [2020-11-29 18:38:13,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:38:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-29 18:38:13,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-29 18:38:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-29 18:38:13,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-29 18:38:13,103 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-29 18:38:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:38:13,104 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-29 18:38:13,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:38:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-29 18:38:13,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 18:38:13,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:38:13,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:38:13,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:38:13,106 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:38:13,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:13,107 INFO L82 PathProgramCache]: Analyzing trace with hash 269557700, now seen corresponding path program 1 times [2020-11-29 18:38:13,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:13,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576998149] [2020-11-29 18:38:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:13,229 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 18:38:13,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576998149] [2020-11-29 18:38:13,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:38:13,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:38:13,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957287753] [2020-11-29 18:38:13,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 18:38:13,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:38:13,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:38:13,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:38:13,233 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-11-29 18:38:13,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:38:13,263 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-11-29 18:38:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:38:13,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 18:38:13,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:38:13,266 INFO L225 Difference]: With dead ends: 217 [2020-11-29 18:38:13,266 INFO L226 Difference]: Without dead ends: 217 [2020-11-29 18:38:13,267 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 18:38:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-11-29 18:38:13,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-11-29 18:38:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-11-29 18:38:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-11-29 18:38:13,294 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-11-29 18:38:13,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:38:13,295 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-11-29 18:38:13,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 18:38:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-11-29 18:38:13,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 18:38:13,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:38:13,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:38:13,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:38:13,304 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:38:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:13,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1876534856, now seen corresponding path program 1 times [2020-11-29 18:38:13,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:13,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275578396] [2020-11-29 18:38:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:13,451 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 18:38:13,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275578396] [2020-11-29 18:38:13,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:38:13,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:38:13,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84311184] [2020-11-29 18:38:13,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:38:13,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:38:13,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:38:13,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:38:13,454 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-11-29 18:38:13,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:38:13,486 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-11-29 18:38:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:38:13,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 18:38:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:38:13,490 INFO L225 Difference]: With dead ends: 136 [2020-11-29 18:38:13,490 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 18:38:13,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:38:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 18:38:13,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-11-29 18:38:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-11-29 18:38:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-11-29 18:38:13,506 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-11-29 18:38:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:38:13,506 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-11-29 18:38:13,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:38:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-11-29 18:38:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 18:38:13,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:38:13,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:38:13,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:38:13,516 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:38:13,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:13,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1466848330, now seen corresponding path program 1 times [2020-11-29 18:38:13,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:13,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053260652] [2020-11-29 18:38:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:13,620 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 18:38:13,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053260652] [2020-11-29 18:38:13,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:38:13,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:38:13,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394612712] [2020-11-29 18:38:13,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:38:13,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:38:13,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:38:13,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:38:13,624 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-11-29 18:38:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:38:13,664 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-11-29 18:38:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:38:13,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 18:38:13,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:38:13,666 INFO L225 Difference]: With dead ends: 109 [2020-11-29 18:38:13,666 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 18:38:13,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:38:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 18:38:13,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-29 18:38:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 18:38:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-11-29 18:38:13,673 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-11-29 18:38:13,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:38:13,673 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-11-29 18:38:13,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:38:13,673 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-11-29 18:38:13,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:38:13,675 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:38:13,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:38:13,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:38:13,675 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:38:13,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:13,676 INFO L82 PathProgramCache]: Analyzing trace with hash -182122517, now seen corresponding path program 1 times [2020-11-29 18:38:13,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:13,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773870911] [2020-11-29 18:38:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:13,798 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 18:38:13,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773870911] [2020-11-29 18:38:13,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:38:13,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:38:13,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48031812] [2020-11-29 18:38:13,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:38:13,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:38:13,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:38:13,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:38:13,803 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 4 states. [2020-11-29 18:38:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:38:13,832 INFO L93 Difference]: Finished difference Result 135 states and 291 transitions. [2020-11-29 18:38:13,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:38:13,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 18:38:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:38:13,835 INFO L225 Difference]: With dead ends: 135 [2020-11-29 18:38:13,835 INFO L226 Difference]: Without dead ends: 85 [2020-11-29 18:38:13,836 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 18:38:13,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-29 18:38:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-11-29 18:38:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-29 18:38:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 177 transitions. [2020-11-29 18:38:13,841 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 177 transitions. Word has length 18 [2020-11-29 18:38:13,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:38:13,841 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 177 transitions. [2020-11-29 18:38:13,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:38:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 177 transitions. [2020-11-29 18:38:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:38:13,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:38:13,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:38:13,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:38:13,843 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:38:13,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:13,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1711993673, now seen corresponding path program 2 times [2020-11-29 18:38:13,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:13,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933029417] [2020-11-29 18:38:13,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:13,943 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 18:38:13,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933029417] [2020-11-29 18:38:13,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:38:13,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:38:13,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529185073] [2020-11-29 18:38:13,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:38:13,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:38:13,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:38:13,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:38:13,946 INFO L87 Difference]: Start difference. First operand 85 states and 177 transitions. Second operand 4 states. [2020-11-29 18:38:13,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:38:13,973 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-11-29 18:38:13,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:38:13,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 18:38:13,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:38:13,975 INFO L225 Difference]: With dead ends: 99 [2020-11-29 18:38:13,975 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 18:38:13,975 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 18:38:13,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 18:38:13,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 18:38:13,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 18:38:13,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 57 transitions. [2020-11-29 18:38:13,978 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 57 transitions. Word has length 18 [2020-11-29 18:38:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:38:13,978 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 57 transitions. [2020-11-29 18:38:13,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:38:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 57 transitions. [2020-11-29 18:38:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:38:13,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:38:13,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:38:13,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:38:13,980 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:38:13,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:38:13,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1121061337, now seen corresponding path program 3 times [2020-11-29 18:38:13,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:38:13,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593289309] [2020-11-29 18:38:13,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:38:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:38:14,069 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 18:38:14,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593289309] [2020-11-29 18:38:14,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:38:14,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:38:14,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272252006] [2020-11-29 18:38:14,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:38:14,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:38:14,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:38:14,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:38:14,071 INFO L87 Difference]: Start difference. First operand 37 states and 57 transitions. Second operand 4 states. [2020-11-29 18:38:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:38:14,090 INFO L93 Difference]: Finished difference Result 36 states and 56 transitions. [2020-11-29 18:38:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:38:14,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 18:38:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:38:14,090 INFO L225 Difference]: With dead ends: 36 [2020-11-29 18:38:14,090 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 18:38:14,091 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 18:38:14,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 18:38:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 18:38:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 18:38:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:38:14,091 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-11-29 18:38:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:38:14,092 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:38:14,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:38:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:38:14,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 18:38:14,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 18:38:14,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:38:14 BasicIcfg [2020-11-29 18:38:14,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:38:14,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:38:14,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:38:14,097 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:38:14,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:38:10" (3/4) ... [2020-11-29 18:38:14,101 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 18:38:14,107 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-29 18:38:14,108 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-29 18:38:14,108 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-29 18:38:14,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 18:38:14,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 18:38:14,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:38:14,114 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 18:38:14,164 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0be37a25-84c5-40b5-9fb6-280b652ce04f/bin/uautomizer/witness.graphml [2020-11-29 18:38:14,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:38:14,166 INFO L168 Benchmark]: Toolchain (without parser) took 5450.89 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 66.0 MB in the beginning and 46.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 42.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:38:14,167 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 75.1 MB in the beginning and 75.1 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:38:14,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.85 ms. Allocated memory is still 102.8 MB. Free memory was 65.8 MB in the beginning and 57.4 MB in the end (delta: 8.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 18:38:14,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.13 ms. Allocated memory is still 102.8 MB. Free memory was 57.4 MB in the beginning and 55.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:38:14,169 INFO L168 Benchmark]: Boogie Preprocessor took 27.63 ms. Allocated memory is still 102.8 MB. Free memory was 55.7 MB in the beginning and 54.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:38:14,169 INFO L168 Benchmark]: RCFGBuilder took 529.01 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 54.0 MB in the beginning and 100.6 MB in the end (delta: -46.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. [2020-11-29 18:38:14,169 INFO L168 Benchmark]: TraceAbstraction took 4045.60 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 49.9 MB in the end (delta: 50.7 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:38:14,170 INFO L168 Benchmark]: Witness Printer took 68.77 ms. Allocated memory is still 125.8 MB. Free memory was 49.9 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:38:14,172 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory was 75.1 MB in the beginning and 75.1 MB in the end (delta: 31.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 698.85 ms. Allocated memory is still 102.8 MB. Free memory was 65.8 MB in the beginning and 57.4 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 72.13 ms. Allocated memory is still 102.8 MB. Free memory was 57.4 MB in the beginning and 55.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.63 ms. Allocated memory is still 102.8 MB. Free memory was 55.7 MB in the beginning and 54.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 529.01 ms. Allocated memory was 102.8 MB in the beginning and 125.8 MB in the end (delta: 23.1 MB). Free memory was 54.0 MB in the beginning and 100.6 MB in the end (delta: -46.6 MB). Peak memory consumption was 23.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4045.60 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 49.9 MB in the end (delta: 50.7 MB). Peak memory consumption was 49.6 MB. Max. memory is 16.1 GB. * Witness Printer took 68.77 ms. Allocated memory is still 125.8 MB. Free memory was 49.9 MB in the beginning and 46.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 936 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 80 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.5s, 84 PlacesBefore, 32 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 3066 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, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 128 SDtfs, 64 SDslu, 159 SDs, 0 SdLazy, 50 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 2488 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...