./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe036_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_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe036_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/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 20e9938d3f7f94b90c2b76322e6e84aa217dc9ed .................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:11:45,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:45,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:45,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:45,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:45,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:45,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:45,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:45,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:45,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:45,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:45,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:45,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:45,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:45,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:45,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:45,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:45,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:45,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:45,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:45,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:45,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:45,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:45,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:45,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:45,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:45,508 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:45,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:45,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:45,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:45,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:45,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:45,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:45,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:45,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:45,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:45,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:45,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:45,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:45,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:45,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:45,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:11:45,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:45,587 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:45,589 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:45,589 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:45,590 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:45,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:45,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:45,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:45,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:45,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:45,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:11:45,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:45,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:11:45,602 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:45,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:11:45,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:45,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:11:45,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:45,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:45,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:45,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:45,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:45,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:45,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:45,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:11:45,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:11:45,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:11:45,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:11:45,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:45,608 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_587a5471-44cc-47e1-b772-e29518b09348/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20e9938d3f7f94b90c2b76322e6e84aa217dc9ed [2020-11-28 03:11:45,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:46,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:46,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:46,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:46,023 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:46,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe036_tso.opt.i [2020-11-28 03:11:46,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/data/bfba0812b/5459204c9ac246cf99c8642956671d64/FLAGf146297a9 [2020-11-28 03:11:46,770 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:46,770 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/sv-benchmarks/c/pthread-wmm/safe036_tso.opt.i [2020-11-28 03:11:46,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/data/bfba0812b/5459204c9ac246cf99c8642956671d64/FLAGf146297a9 [2020-11-28 03:11:46,996 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/data/bfba0812b/5459204c9ac246cf99c8642956671d64 [2020-11-28 03:11:46,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:47,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:11:47,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:47,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:47,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:47,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:46" (1/1) ... [2020-11-28 03:11:47,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757291f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47, skipping insertion in model container [2020-11-28 03:11:47,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:46" (1/1) ... [2020-11-28 03:11:47,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:47,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:47,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:47,474 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:47,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:47,640 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:47,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47 WrapperNode [2020-11-28 03:11:47,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:47,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:47,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:11:47,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:11:47,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... [2020-11-28 03:11:47,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... [2020-11-28 03:11:47,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:47,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:47,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:47,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:47,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... [2020-11-28 03:11:47,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... [2020-11-28 03:11:47,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... [2020-11-28 03:11:47,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... [2020-11-28 03:11:47,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... [2020-11-28 03:11:47,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... [2020-11-28 03:11:47,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... [2020-11-28 03:11:47,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:47,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:47,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:47,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:47,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/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 [2020-11-28 03:11:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:11:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 03:11:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:11:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 03:11:47,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 03:11:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 03:11:47,938 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 03:11:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:11:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 03:11:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:47,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:47,942 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 03:11:48,451 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:48,452 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 03:11:48,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:48 BoogieIcfgContainer [2020-11-28 03:11:48,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:48,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:48,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:48,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:48,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:46" (1/3) ... [2020-11-28 03:11:48,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121edb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:48, skipping insertion in model container [2020-11-28 03:11:48,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:47" (2/3) ... [2020-11-28 03:11:48,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121edb96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:48, skipping insertion in model container [2020-11-28 03:11:48,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:48" (3/3) ... [2020-11-28 03:11:48,464 INFO L111 eAbstractionObserver]: Analyzing ICFG safe036_tso.opt.i [2020-11-28 03:11:48,476 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 03:11:48,476 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:48,481 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:11:48,482 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 03:11:48,508 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,509 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,509 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,510 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,510 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,510 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,511 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,511 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,511 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,514 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,514 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,529 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,529 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,530 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,530 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 03:11:48,535 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 03:11:48,546 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-28 03:11:48,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:48,571 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:11:48,571 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:48,571 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:48,571 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:48,571 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:48,571 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:48,572 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:48,584 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 03:11:48,587 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-28 03:11:48,590 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 69 places, 65 transitions, 140 flow [2020-11-28 03:11:48,592 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 69 places, 65 transitions, 140 flow [2020-11-28 03:11:48,642 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2020-11-28 03:11:48,642 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 03:11:48,646 INFO L80 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 3/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-28 03:11:48,648 INFO L116 LiptonReduction]: Number of co-enabled transitions 792 [2020-11-28 03:11:50,318 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2020-11-28 03:11:50,430 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-11-28 03:11:51,113 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-28 03:11:51,227 INFO L131 LiptonReduction]: Checked pairs total: 1418 [2020-11-28 03:11:51,227 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-28 03:11:51,243 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 17 transitions, 44 flow [2020-11-28 03:11:51,255 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 90 states. [2020-11-28 03:11:51,257 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-11-28 03:11:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:11:51,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:51,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:11:51,263 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:51,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:51,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1338798449, now seen corresponding path program 1 times [2020-11-28 03:11:51,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:51,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4635227] [2020-11-28 03:11:51,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:51,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4635227] [2020-11-28 03:11:51,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:51,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:11:51,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936949520] [2020-11-28 03:11:51,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:11:51,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:51,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:11:51,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:11:51,551 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2020-11-28 03:11:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:51,578 INFO L93 Difference]: Finished difference Result 90 states and 200 transitions. [2020-11-28 03:11:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:11:51,579 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 03:11:51,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:51,591 INFO L225 Difference]: With dead ends: 90 [2020-11-28 03:11:51,591 INFO L226 Difference]: Without dead ends: 74 [2020-11-28 03:11:51,593 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 [2020-11-28 03:11:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-28 03:11:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-28 03:11:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 03:11:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 160 transitions. [2020-11-28 03:11:51,647 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 160 transitions. Word has length 6 [2020-11-28 03:11:51,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:51,647 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 160 transitions. [2020-11-28 03:11:51,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:11:51,648 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 160 transitions. [2020-11-28 03:11:51,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 03:11:51,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:51,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:51,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:11:51,649 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:51,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:51,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1446900907, now seen corresponding path program 1 times [2020-11-28 03:11:51,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:51,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452037084] [2020-11-28 03:11:51,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:51,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:51,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452037084] [2020-11-28 03:11:51,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:51,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:11:51,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103605282] [2020-11-28 03:11:51,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:11:51,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:51,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:11:51,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:11:51,880 INFO L87 Difference]: Start difference. First operand 74 states and 160 transitions. Second operand 4 states. [2020-11-28 03:11:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:51,976 INFO L93 Difference]: Finished difference Result 63 states and 112 transitions. [2020-11-28 03:11:51,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:11:51,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 03:11:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:51,979 INFO L225 Difference]: With dead ends: 63 [2020-11-28 03:11:51,979 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 03:11:51,980 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 [2020-11-28 03:11:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 03:11:51,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-28 03:11:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 03:11:51,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 79 transitions. [2020-11-28 03:11:51,994 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 79 transitions. Word has length 7 [2020-11-28 03:11:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:51,994 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 79 transitions. [2020-11-28 03:11:51,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:11:51,994 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 79 transitions. [2020-11-28 03:11:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:11:51,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:51,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:51,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:11:51,997 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:51,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:51,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1074461755, now seen corresponding path program 1 times [2020-11-28 03:11:51,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:51,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826998992] [2020-11-28 03:11:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:52,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:52,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826998992] [2020-11-28 03:11:52,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:52,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:11:52,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131642211] [2020-11-28 03:11:52,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:11:52,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:52,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:11:52,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:52,197 INFO L87 Difference]: Start difference. First operand 47 states and 79 transitions. Second operand 5 states. [2020-11-28 03:11:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:52,247 INFO L93 Difference]: Finished difference Result 36 states and 55 transitions. [2020-11-28 03:11:52,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:11:52,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:11:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:52,248 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:11:52,249 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 03:11:52,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:11:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 03:11:52,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 03:11:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:11:52,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2020-11-28 03:11:52,253 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 43 transitions. Word has length 10 [2020-11-28 03:11:52,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:52,254 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 43 transitions. [2020-11-28 03:11:52,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:11:52,255 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 43 transitions. [2020-11-28 03:11:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:11:52,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:52,256 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:52,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:11:52,256 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:52,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:52,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1774648449, now seen corresponding path program 1 times [2020-11-28 03:11:52,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:52,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287787526] [2020-11-28 03:11:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:52,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287787526] [2020-11-28 03:11:52,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:52,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:11:52,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263655142] [2020-11-28 03:11:52,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:11:52,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:52,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:11:52,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:52,331 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand 5 states. [2020-11-28 03:11:52,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:52,388 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2020-11-28 03:11:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:11:52,388 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:11:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:52,389 INFO L225 Difference]: With dead ends: 37 [2020-11-28 03:11:52,389 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:11:52,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:11:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:11:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:11:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:11:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-28 03:11:52,392 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2020-11-28 03:11:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:52,392 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-28 03:11:52,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:11:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-28 03:11:52,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:11:52,393 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:52,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:52,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:11:52,394 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:52,394 INFO L82 PathProgramCache]: Analyzing trace with hash 290614237, now seen corresponding path program 2 times [2020-11-28 03:11:52,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:52,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086016143] [2020-11-28 03:11:52,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:52,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086016143] [2020-11-28 03:11:52,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:52,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:11:52,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371591341] [2020-11-28 03:11:52,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:11:52,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:52,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:11:52,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:11:52,495 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2020-11-28 03:11:52,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:52,520 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2020-11-28 03:11:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:11:52,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:11:52,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:52,521 INFO L225 Difference]: With dead ends: 16 [2020-11-28 03:11:52,521 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:11:52,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:11:52,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:11:52,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:11:52,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:11:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:11:52,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-28 03:11:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:52,522 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:11:52,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:11:52,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:11:52,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:11:52,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 03:11:52,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:52 BasicIcfg [2020-11-28 03:11:52,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:52,527 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:52,527 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:52,527 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:52,528 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:48" (3/4) ... [2020-11-28 03:11:52,531 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:11:52,538 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 03:11:52,538 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 03:11:52,543 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 03:11:52,543 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:11:52,544 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:11:52,544 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:11:52,584 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_587a5471-44cc-47e1-b772-e29518b09348/bin/uautomizer/witness.graphml [2020-11-28 03:11:52,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:52,586 INFO L168 Benchmark]: Toolchain (without parser) took 5582.72 ms. Allocated memory was 86.0 MB in the beginning and 130.0 MB in the end (delta: 44.0 MB). Free memory was 63.7 MB in the beginning and 91.1 MB in the end (delta: -27.4 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:52,586 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 60.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:52,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.98 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 63.4 MB in the beginning and 81.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:52,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.37 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 81.1 MB in the end (delta: -74.0 kB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:52,589 INFO L168 Benchmark]: Boogie Preprocessor took 70.38 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 80.4 MB in the end (delta: 727.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:52,589 INFO L168 Benchmark]: RCFGBuilder took 630.92 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 60.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:52,590 INFO L168 Benchmark]: TraceAbstraction took 4070.45 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 60.1 MB in the beginning and 93.2 MB in the end (delta: -33.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:52,591 INFO L168 Benchmark]: Witness Printer took 57.75 ms. Allocated memory is still 130.0 MB. Free memory was 93.2 MB in the beginning and 91.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:52,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 86.0 MB. Free memory is still 60.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 635.98 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 63.4 MB in the beginning and 81.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 34.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.37 ms. Allocated memory is still 104.9 MB. Free memory was 81.0 MB in the beginning and 81.1 MB in the end (delta: -74.0 kB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.38 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 80.4 MB in the end (delta: 727.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 630.92 ms. Allocated memory is still 104.9 MB. Free memory was 80.4 MB in the beginning and 60.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4070.45 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 60.1 MB in the beginning and 93.2 MB in the end (delta: -33.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.75 ms. Allocated memory is still 130.0 MB. Free memory was 93.2 MB in the beginning and 91.1 MB in the end (delta: 2.1 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 525 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 36 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.6s, 69 PlacesBefore, 23 PlacesAfterwards, 65 TransitionsBefore, 17 TransitionsAfterwards, 792 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1418 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 3 procedures, 63 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 71 SDtfs, 48 SDslu, 99 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...