./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack-2.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_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/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 222125c717d992fdf8da41f61f0a35e98727dda6 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:26:31,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:26:31,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:26:31,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:26:31,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:26:31,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:26:31,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:26:31,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:26:31,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:26:31,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:26:31,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:26:31,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:26:31,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:26:31,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:26:31,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:26:31,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:26:31,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:26:31,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:26:31,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:26:31,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:26:31,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:26:31,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:26:31,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:26:31,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:26:31,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:26:31,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:26:31,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:26:31,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:26:31,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:26:31,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:26:31,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:26:31,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:26:31,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:26:31,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:26:31,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:26:31,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:26:31,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:26:31,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:26:31,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:26:31,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:26:31,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:26:31,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:26:31,634 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:26:31,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:26:31,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:26:31,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:26:31,637 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:26:31,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:26:31,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:26:31,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:26:31,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:26:31,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:26:31,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:26:31,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:26:31,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:26:31,640 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:26:31,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:26:31,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:26:31,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:26:31,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:26:31,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:26:31,641 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:26:31,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:26:31,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:26:31,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:26:31,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:26:31,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:26:31,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:26:31,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:26:31,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:26:31,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:26:31,643 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_db33db0c-a433-43c7-89d6-80b13540f199/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 222125c717d992fdf8da41f61f0a35e98727dda6 [2020-11-29 20:26:31,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:26:31,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:26:31,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:26:31,947 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:26:31,948 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:26:31,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/../../sv-benchmarks/c/pthread/stack-2.i [2020-11-29 20:26:32,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/data/1bf9e2619/dbf25614b8064feb931792221f902c0e/FLAG1027b6b95 [2020-11-29 20:26:32,663 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:26:32,664 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/sv-benchmarks/c/pthread/stack-2.i [2020-11-29 20:26:32,684 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/data/1bf9e2619/dbf25614b8064feb931792221f902c0e/FLAG1027b6b95 [2020-11-29 20:26:32,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/data/1bf9e2619/dbf25614b8064feb931792221f902c0e [2020-11-29 20:26:32,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:26:32,890 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:26:32,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:26:32,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:26:32,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:26:32,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:26:32" (1/1) ... [2020-11-29 20:26:32,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c34d7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:32, skipping insertion in model container [2020-11-29 20:26:32,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:26:32" (1/1) ... [2020-11-29 20:26:32,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:26:32,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:26:33,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:26:33,587 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:26:33,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:26:33,851 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:26:33,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33 WrapperNode [2020-11-29 20:26:33,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:26:33,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:26:33,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:26:33,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:26:33,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... [2020-11-29 20:26:33,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... [2020-11-29 20:26:33,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:26:33,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:26:33,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:26:33,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:26:33,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... [2020-11-29 20:26:33,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... [2020-11-29 20:26:33,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... [2020-11-29 20:26:33,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... [2020-11-29 20:26:33,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... [2020-11-29 20:26:33,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... [2020-11-29 20:26:33,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... [2020-11-29 20:26:33,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:26:33,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:26:33,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:26:33,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:26:33,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/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 20:26:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-29 20:26:34,044 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-29 20:26:34,044 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-29 20:26:34,044 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-29 20:26:34,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:26:34,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 20:26:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 20:26:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 20:26:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-29 20:26:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:26:34,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:26:34,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:26:34,048 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 20:26:34,947 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:26:34,948 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-11-29 20:26:34,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:34 BoogieIcfgContainer [2020-11-29 20:26:34,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:26:34,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:26:34,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:26:34,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:26:34,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:26:32" (1/3) ... [2020-11-29 20:26:34,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7217ab0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:26:34, skipping insertion in model container [2020-11-29 20:26:34,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:26:33" (2/3) ... [2020-11-29 20:26:34,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7217ab0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:26:34, skipping insertion in model container [2020-11-29 20:26:34,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:34" (3/3) ... [2020-11-29 20:26:34,963 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-2.i [2020-11-29 20:26:34,989 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 20:26:34,989 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:26:34,995 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 20:26:34,996 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 20:26:35,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,040 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,041 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,042 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,043 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,044 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,044 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,045 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,045 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,045 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,046 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,046 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,046 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,047 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,047 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,047 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,047 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,048 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,048 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,048 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,049 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,049 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,050 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,050 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,050 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,050 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,051 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,051 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,052 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,053 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,054 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,054 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,055 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,055 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,055 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,056 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,056 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,056 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,056 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,056 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,057 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,057 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,058 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,059 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,059 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,059 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,059 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,060 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,061 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,062 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,062 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,062 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,062 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,063 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,063 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,063 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,063 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,064 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,064 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,064 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,065 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,065 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,065 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,065 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,066 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,066 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,067 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,067 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,067 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,067 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,068 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,068 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,069 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,069 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,070 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,071 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,072 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,073 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,074 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,075 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,076 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,077 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,077 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,077 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,077 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,078 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,079 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,081 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,082 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,082 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,082 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,083 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,083 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,084 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,084 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,084 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,084 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,085 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,085 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,085 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,085 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,086 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,086 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,087 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,095 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,096 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,096 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,096 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,096 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,097 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,097 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,097 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,097 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,097 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,097 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,098 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,098 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,098 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,098 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,098 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,099 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,099 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,099 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,099 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,099 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,099 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,100 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,100 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,100 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 20:26:35,112 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-29 20:26:35,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 20:26:35,157 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:26:35,158 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:26:35,158 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:26:35,158 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:26:35,158 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:26:35,158 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:26:35,158 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:26:35,158 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:26:35,184 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 20:26:35,187 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 163 transitions, 348 flow [2020-11-29 20:26:35,190 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 163 transitions, 348 flow [2020-11-29 20:26:35,191 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 156 places, 163 transitions, 348 flow [2020-11-29 20:26:35,319 INFO L129 PetriNetUnfolder]: 13/163 cut-off events. [2020-11-29 20:26:35,319 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-29 20:26:35,328 INFO L80 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 163 events. 13/163 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 445 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 123. Up to 3 conditions per place. [2020-11-29 20:26:35,336 INFO L116 LiptonReduction]: Number of co-enabled transitions 7732 [2020-11-29 20:26:38,873 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 20:26:39,000 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-29 20:26:39,719 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-11-29 20:26:39,920 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-29 20:26:41,328 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 158 DAG size of output: 146 [2020-11-29 20:26:41,757 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-11-29 20:26:41,925 INFO L131 LiptonReduction]: Checked pairs total: 13131 [2020-11-29 20:26:41,926 INFO L133 LiptonReduction]: Total number of compositions: 157 [2020-11-29 20:26:41,936 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 41 transitions, 104 flow [2020-11-29 20:26:41,984 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-11-29 20:26:41,986 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-11-29 20:26:41,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:26:41,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:41,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:26:41,994 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:42,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1417848858, now seen corresponding path program 1 times [2020-11-29 20:26:42,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:42,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290783742] [2020-11-29 20:26:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:42,297 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 20:26:42,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290783742] [2020-11-29 20:26:42,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:42,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:26:42,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088770259] [2020-11-29 20:26:42,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:26:42,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:42,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:26:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:26:42,335 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-11-29 20:26:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:42,452 INFO L93 Difference]: Finished difference Result 602 states and 1541 transitions. [2020-11-29 20:26:42,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:26:42,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-29 20:26:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:42,475 INFO L225 Difference]: With dead ends: 602 [2020-11-29 20:26:42,475 INFO L226 Difference]: Without dead ends: 580 [2020-11-29 20:26:42,476 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 20:26:42,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-11-29 20:26:42,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 427. [2020-11-29 20:26:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-29 20:26:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1148 transitions. [2020-11-29 20:26:42,587 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1148 transitions. Word has length 6 [2020-11-29 20:26:42,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:42,587 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 1148 transitions. [2020-11-29 20:26:42,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:26:42,597 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1148 transitions. [2020-11-29 20:26:42,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:26:42,599 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:42,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:42,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:26:42,599 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:42,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:42,600 INFO L82 PathProgramCache]: Analyzing trace with hash 2040891315, now seen corresponding path program 1 times [2020-11-29 20:26:42,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:42,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525232569] [2020-11-29 20:26:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:42,737 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 20:26:42,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525232569] [2020-11-29 20:26:42,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:42,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:26:42,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543917819] [2020-11-29 20:26:42,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:26:42,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:42,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:26:42,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:26:42,740 INFO L87 Difference]: Start difference. First operand 427 states and 1148 transitions. Second operand 3 states. [2020-11-29 20:26:42,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:42,762 INFO L93 Difference]: Finished difference Result 530 states and 1370 transitions. [2020-11-29 20:26:42,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:26:42,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 20:26:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:42,774 INFO L225 Difference]: With dead ends: 530 [2020-11-29 20:26:42,774 INFO L226 Difference]: Without dead ends: 508 [2020-11-29 20:26:42,775 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 20:26:42,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-29 20:26:42,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 468. [2020-11-29 20:26:42,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-11-29 20:26:42,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1250 transitions. [2020-11-29 20:26:42,813 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1250 transitions. Word has length 8 [2020-11-29 20:26:42,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:42,814 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 1250 transitions. [2020-11-29 20:26:42,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:26:42,814 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1250 transitions. [2020-11-29 20:26:42,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:26:42,815 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:42,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:42,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:26:42,816 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:42,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:42,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1542370467, now seen corresponding path program 1 times [2020-11-29 20:26:42,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:42,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601484556] [2020-11-29 20:26:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:26:42,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601484556] [2020-11-29 20:26:42,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:42,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:26:42,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489001435] [2020-11-29 20:26:42,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:26:42,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:42,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:26:42,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:26:42,878 INFO L87 Difference]: Start difference. First operand 468 states and 1250 transitions. Second operand 3 states. [2020-11-29 20:26:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:42,896 INFO L93 Difference]: Finished difference Result 504 states and 1343 transitions. [2020-11-29 20:26:42,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:26:42,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 20:26:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:42,903 INFO L225 Difference]: With dead ends: 504 [2020-11-29 20:26:42,903 INFO L226 Difference]: Without dead ends: 504 [2020-11-29 20:26:42,903 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 20:26:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-29 20:26:42,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-29 20:26:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-11-29 20:26:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1343 transitions. [2020-11-29 20:26:42,935 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1343 transitions. Word has length 10 [2020-11-29 20:26:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:42,936 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 1343 transitions. [2020-11-29 20:26:42,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:26:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1343 transitions. [2020-11-29 20:26:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 20:26:42,940 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:42,940 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:42,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 20:26:42,941 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:42,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1453291019, now seen corresponding path program 1 times [2020-11-29 20:26:42,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:42,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099727259] [2020-11-29 20:26:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:43,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:26:43,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099727259] [2020-11-29 20:26:43,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248169940] [2020-11-29 20:26:43,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:26:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:43,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:26:43,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:26:43,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:26:43,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-29 20:26:43,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754760908] [2020-11-29 20:26:43,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:26:43,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:43,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:26:43,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:26:43,452 INFO L87 Difference]: Start difference. First operand 504 states and 1343 transitions. Second operand 7 states. [2020-11-29 20:26:43,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:43,629 INFO L93 Difference]: Finished difference Result 940 states and 2424 transitions. [2020-11-29 20:26:43,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:26:43,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-29 20:26:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:43,640 INFO L225 Difference]: With dead ends: 940 [2020-11-29 20:26:43,642 INFO L226 Difference]: Without dead ends: 940 [2020-11-29 20:26:43,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 20:26:43,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-11-29 20:26:43,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 688. [2020-11-29 20:26:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-11-29 20:26:43,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1842 transitions. [2020-11-29 20:26:43,682 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1842 transitions. Word has length 14 [2020-11-29 20:26:43,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:43,682 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 1842 transitions. [2020-11-29 20:26:43,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:26:43,682 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1842 transitions. [2020-11-29 20:26:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 20:26:43,690 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:43,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:43,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:26:43,909 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash 492744942, now seen corresponding path program 1 times [2020-11-29 20:26:43,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:43,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204303598] [2020-11-29 20:26:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:43,993 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 20:26:43,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204303598] [2020-11-29 20:26:43,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:43,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:26:43,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284580763] [2020-11-29 20:26:43,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:26:43,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:43,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:26:43,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:26:43,996 INFO L87 Difference]: Start difference. First operand 688 states and 1842 transitions. Second operand 3 states. [2020-11-29 20:26:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:44,044 INFO L93 Difference]: Finished difference Result 343 states and 775 transitions. [2020-11-29 20:26:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:26:44,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-29 20:26:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:44,047 INFO L225 Difference]: With dead ends: 343 [2020-11-29 20:26:44,047 INFO L226 Difference]: Without dead ends: 339 [2020-11-29 20:26:44,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 20:26:44,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-11-29 20:26:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 313. [2020-11-29 20:26:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-11-29 20:26:44,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 700 transitions. [2020-11-29 20:26:44,062 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 700 transitions. Word has length 16 [2020-11-29 20:26:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:44,062 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 700 transitions. [2020-11-29 20:26:44,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:26:44,062 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 700 transitions. [2020-11-29 20:26:44,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 20:26:44,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:44,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:44,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 20:26:44,065 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:44,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:44,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1972798213, now seen corresponding path program 1 times [2020-11-29 20:26:44,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:44,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981036284] [2020-11-29 20:26:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:44,179 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 20:26:44,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981036284] [2020-11-29 20:26:44,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:44,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 20:26:44,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340499761] [2020-11-29 20:26:44,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:26:44,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:44,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:26:44,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:26:44,181 INFO L87 Difference]: Start difference. First operand 313 states and 700 transitions. Second operand 5 states. [2020-11-29 20:26:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:44,326 INFO L93 Difference]: Finished difference Result 473 states and 1056 transitions. [2020-11-29 20:26:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:26:44,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-29 20:26:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:44,331 INFO L225 Difference]: With dead ends: 473 [2020-11-29 20:26:44,331 INFO L226 Difference]: Without dead ends: 473 [2020-11-29 20:26:44,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:26:44,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-11-29 20:26:44,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 351. [2020-11-29 20:26:44,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-11-29 20:26:44,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 791 transitions. [2020-11-29 20:26:44,348 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 791 transitions. Word has length 17 [2020-11-29 20:26:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:44,348 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 791 transitions. [2020-11-29 20:26:44,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:26:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 791 transitions. [2020-11-29 20:26:44,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 20:26:44,350 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:44,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:44,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 20:26:44,351 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:44,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:44,352 INFO L82 PathProgramCache]: Analyzing trace with hash -380326838, now seen corresponding path program 1 times [2020-11-29 20:26:44,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:44,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462528557] [2020-11-29 20:26:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:45,074 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 20:26:45,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462528557] [2020-11-29 20:26:45,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:26:45,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 20:26:45,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79280012] [2020-11-29 20:26:45,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 20:26:45,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:45,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 20:26:45,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-29 20:26:45,077 INFO L87 Difference]: Start difference. First operand 351 states and 791 transitions. Second operand 14 states. [2020-11-29 20:26:46,303 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-11-29 20:26:46,454 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-11-29 20:26:46,668 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-29 20:26:46,887 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-29 20:26:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:47,087 INFO L93 Difference]: Finished difference Result 750 states and 1641 transitions. [2020-11-29 20:26:47,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 20:26:47,088 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 21 [2020-11-29 20:26:47,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:47,094 INFO L225 Difference]: With dead ends: 750 [2020-11-29 20:26:47,094 INFO L226 Difference]: Without dead ends: 750 [2020-11-29 20:26:47,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2020-11-29 20:26:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-11-29 20:26:47,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 436. [2020-11-29 20:26:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-11-29 20:26:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 990 transitions. [2020-11-29 20:26:47,116 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 990 transitions. Word has length 21 [2020-11-29 20:26:47,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:47,117 INFO L481 AbstractCegarLoop]: Abstraction has 436 states and 990 transitions. [2020-11-29 20:26:47,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 20:26:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 990 transitions. [2020-11-29 20:26:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 20:26:47,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:47,118 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 20:26:47,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 20:26:47,119 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:47,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:47,119 INFO L82 PathProgramCache]: Analyzing trace with hash 569654532, now seen corresponding path program 2 times [2020-11-29 20:26:47,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:47,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569867920] [2020-11-29 20:26:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:26:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:26:47,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569867920] [2020-11-29 20:26:47,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899168962] [2020-11-29 20:26:47,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:26:47,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:26:47,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:26:47,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:26:47,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:26:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:26:47,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:26:47,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-29 20:26:47,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570782441] [2020-11-29 20:26:47,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 20:26:47,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:26:47,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 20:26:47,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:26:47,489 INFO L87 Difference]: Start difference. First operand 436 states and 990 transitions. Second operand 9 states. [2020-11-29 20:26:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:26:47,627 INFO L93 Difference]: Finished difference Result 789 states and 1756 transitions. [2020-11-29 20:26:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:26:47,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-11-29 20:26:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:26:47,635 INFO L225 Difference]: With dead ends: 789 [2020-11-29 20:26:47,636 INFO L226 Difference]: Without dead ends: 789 [2020-11-29 20:26:47,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-29 20:26:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-11-29 20:26:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 548. [2020-11-29 20:26:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-11-29 20:26:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1256 transitions. [2020-11-29 20:26:47,667 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1256 transitions. Word has length 22 [2020-11-29 20:26:47,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:26:47,667 INFO L481 AbstractCegarLoop]: Abstraction has 548 states and 1256 transitions. [2020-11-29 20:26:47,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 20:26:47,668 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1256 transitions. [2020-11-29 20:26:47,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 20:26:47,669 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:26:47,670 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:26:47,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:26:47,883 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:26:47,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:26:47,884 INFO L82 PathProgramCache]: Analyzing trace with hash -191252421, now seen corresponding path program 1 times [2020-11-29 20:26:47,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:26:47,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950984360] [2020-11-29 20:26:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:26:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:26:47,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:26:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:26:47,970 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:26:48,009 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:26:48,009 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:26:48,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 20:26:48,011 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-29 20:26:48,011 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-29 20:26:48,011 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-29 20:26:48,019 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [642] [642] L995-1-->L960: Formula: (let ((.cse0 (mod t1Thread1of1ForFork1_~tmp~0_In1956185839 4294967296))) (and (= |t1Thread1of1ForFork1_push_#in~stack.base_Out1956185839| |~#arr~0.base_In1956185839|) (= .cse0 |t1Thread1of1ForFork1_push_#in~x_Out1956185839|) (= t1Thread1of1ForFork1_assume_abort_if_not_~cond_Out1956185839 |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1956185839|) (= |t1Thread1of1ForFork1_push_#in~stack.offset_Out1956185839| |~#arr~0.offset_In1956185839|) (= |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1956185839| 1) (< .cse0 5))) InVars {~#arr~0.offset=|~#arr~0.offset_In1956185839|, t1Thread1of1ForFork1_~tmp~0=t1Thread1of1ForFork1_~tmp~0_In1956185839, ~#arr~0.base=|~#arr~0.base_In1956185839|} OutVars{t1Thread1of1ForFork1_push_#in~x=|t1Thread1of1ForFork1_push_#in~x_Out1956185839|, ~#arr~0.offset=|~#arr~0.offset_In1956185839|, t1Thread1of1ForFork1_push_#t~nondet36=|t1Thread1of1ForFork1_push_#t~nondet36_Out1956185839|, t1Thread1of1ForFork1_push_~stack.offset=t1Thread1of1ForFork1_push_~stack.offset_Out1956185839, t1Thread1of1ForFork1_push_#res=|t1Thread1of1ForFork1_push_#res_Out1956185839|, t1Thread1of1ForFork1_push_~stack.base=t1Thread1of1ForFork1_push_~stack.base_Out1956185839, t1Thread1of1ForFork1_push_#t~ret38=|t1Thread1of1ForFork1_push_#t~ret38_Out1956185839|, t1Thread1of1ForFork1_assume_abort_if_not_~cond=t1Thread1of1ForFork1_assume_abort_if_not_~cond_Out1956185839, t1Thread1of1ForFork1_~tmp~0=t1Thread1of1ForFork1_~tmp~0_In1956185839, t1Thread1of1ForFork1_push_#in~stack.base=|t1Thread1of1ForFork1_push_#in~stack.base_Out1956185839|, t1Thread1of1ForFork1_push_~x=t1Thread1of1ForFork1_push_~x_Out1956185839, t1Thread1of1ForFork1_#t~nondet46=|t1Thread1of1ForFork1_#t~nondet46_Out1956185839|, t1Thread1of1ForFork1_push_#in~stack.offset=|t1Thread1of1ForFork1_push_#in~stack.offset_Out1956185839|, t1Thread1of1ForFork1_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1956185839|, ~#arr~0.base=|~#arr~0.base_In1956185839|} AuxVars[] AssignedVars[t1Thread1of1ForFork1_push_#in~x, t1Thread1of1ForFork1_assume_abort_if_not_~cond, t1Thread1of1ForFork1_push_#in~stack.base, t1Thread1of1ForFork1_push_~x, t1Thread1of1ForFork1_push_#t~nondet36, t1Thread1of1ForFork1_push_~stack.offset, t1Thread1of1ForFork1_push_#res, t1Thread1of1ForFork1_#t~nondet46, t1Thread1of1ForFork1_push_~stack.base, t1Thread1of1ForFork1_push_#in~stack.offset, t1Thread1of1ForFork1_assume_abort_if_not_#in~cond, t1Thread1of1ForFork1_push_#t~ret38] because there is no mapped edge [2020-11-29 20:26:48,027 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L997-2-->L1000: Formula: (and (= ~flag~0_Out26046982 1) (<= |t1Thread1of1ForFork1_#t~ret47_In26046982| 2147483647) (<= 0 (+ |t1Thread1of1ForFork1_#t~ret47_In26046982| 2147483648)) (= |t1Thread1of1ForFork1_reach_error_#t~nondet2.base_In26046982| |t1Thread1of1ForFork1_reach_error_#t~nondet2.base_Out26046982|) (= |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_In26046982| |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out26046982|) (not (= (- 1) |t1Thread1of1ForFork1_#t~ret47_In26046982|))) InVars {t1Thread1of1ForFork1_#t~ret47=|t1Thread1of1ForFork1_#t~ret47_In26046982|, t1Thread1of1ForFork1_reach_error_#t~nondet2.base=|t1Thread1of1ForFork1_reach_error_#t~nondet2.base_In26046982|, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_In26046982|} OutVars{~flag~0=~flag~0_Out26046982, t1Thread1of1ForFork1_#t~ret47=|t1Thread1of1ForFork1_#t~ret47_Out26046982|, t1Thread1of1ForFork1_reach_error_#t~nondet2.base=|t1Thread1of1ForFork1_reach_error_#t~nondet2.base_Out26046982|, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out26046982|} AuxVars[] AssignedVars[~flag~0, t1Thread1of1ForFork1_#t~ret47, t1Thread1of1ForFork1_reach_error_#t~nondet2.base, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-29 20:26:48,034 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [652] [652] L1012-4-->L1007-6: Formula: (and (not (= (- 2) |t2Thread1of1ForFork0_#t~ret50_In-243753659|)) (= |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out-243753659| |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_In-243753659|) (= |t2Thread1of1ForFork0_reach_error_#t~nondet2.base_Out-243753659| |t2Thread1of1ForFork0_reach_error_#t~nondet2.base_In-243753659|) (= (+ t2Thread1of1ForFork0_~i~1_In-243753659 1) t2Thread1of1ForFork0_~i~1_Out-243753659) (= (store |#pthreadsMutex_In-243753659| |~#m~0.base_In-243753659| (store (select |#pthreadsMutex_In-243753659| |~#m~0.base_In-243753659|) |~#m~0.offset_In-243753659| 0)) |#pthreadsMutex_Out-243753659|)) InVars {t2Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_In-243753659|, #pthreadsMutex=|#pthreadsMutex_In-243753659|, t2Thread1of1ForFork0_reach_error_#t~nondet2.base=|t2Thread1of1ForFork0_reach_error_#t~nondet2.base_In-243753659|, ~#m~0.base=|~#m~0.base_In-243753659|, t2Thread1of1ForFork0_#t~ret50=|t2Thread1of1ForFork0_#t~ret50_In-243753659|, ~#m~0.offset=|~#m~0.offset_In-243753659|, t2Thread1of1ForFork0_~i~1=t2Thread1of1ForFork0_~i~1_In-243753659} OutVars{#pthreadsMutex=|#pthreadsMutex_Out-243753659|, t2Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out-243753659|, t2Thread1of1ForFork0_reach_error_#t~nondet2.base=|t2Thread1of1ForFork0_reach_error_#t~nondet2.base_Out-243753659|, ~#m~0.base=|~#m~0.base_In-243753659|, t2Thread1of1ForFork0_#t~ret50=|t2Thread1of1ForFork0_#t~ret50_Out-243753659|, ~#m~0.offset=|~#m~0.offset_In-243753659|, t2Thread1of1ForFork0_#t~post48=|t2Thread1of1ForFork0_#t~post48_Out-243753659|, t2Thread1of1ForFork0_~i~1=t2Thread1of1ForFork0_~i~1_Out-243753659} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork0_reach_error_#t~nondet2.offset, t2Thread1of1ForFork0_reach_error_#t~nondet2.base, t2Thread1of1ForFork0_#t~ret50, t2Thread1of1ForFork0_#t~post48, t2Thread1of1ForFork0_~i~1] because there is no mapped edge [2020-11-29 20:26:48,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:26:48 BasicIcfg [2020-11-29 20:26:48,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:26:48,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:26:48,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:26:48,106 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:26:48,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:26:34" (3/4) ... [2020-11-29 20:26:48,109 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:26:48,111 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [642] [642] L995-1-->L960: Formula: (let ((.cse0 (mod t1Thread1of1ForFork1_~tmp~0_In1956185839 4294967296))) (and (= |t1Thread1of1ForFork1_push_#in~stack.base_Out1956185839| |~#arr~0.base_In1956185839|) (= .cse0 |t1Thread1of1ForFork1_push_#in~x_Out1956185839|) (= t1Thread1of1ForFork1_assume_abort_if_not_~cond_Out1956185839 |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1956185839|) (= |t1Thread1of1ForFork1_push_#in~stack.offset_Out1956185839| |~#arr~0.offset_In1956185839|) (= |t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1956185839| 1) (< .cse0 5))) InVars {~#arr~0.offset=|~#arr~0.offset_In1956185839|, t1Thread1of1ForFork1_~tmp~0=t1Thread1of1ForFork1_~tmp~0_In1956185839, ~#arr~0.base=|~#arr~0.base_In1956185839|} OutVars{t1Thread1of1ForFork1_push_#in~x=|t1Thread1of1ForFork1_push_#in~x_Out1956185839|, ~#arr~0.offset=|~#arr~0.offset_In1956185839|, t1Thread1of1ForFork1_push_#t~nondet36=|t1Thread1of1ForFork1_push_#t~nondet36_Out1956185839|, t1Thread1of1ForFork1_push_~stack.offset=t1Thread1of1ForFork1_push_~stack.offset_Out1956185839, t1Thread1of1ForFork1_push_#res=|t1Thread1of1ForFork1_push_#res_Out1956185839|, t1Thread1of1ForFork1_push_~stack.base=t1Thread1of1ForFork1_push_~stack.base_Out1956185839, t1Thread1of1ForFork1_push_#t~ret38=|t1Thread1of1ForFork1_push_#t~ret38_Out1956185839|, t1Thread1of1ForFork1_assume_abort_if_not_~cond=t1Thread1of1ForFork1_assume_abort_if_not_~cond_Out1956185839, t1Thread1of1ForFork1_~tmp~0=t1Thread1of1ForFork1_~tmp~0_In1956185839, t1Thread1of1ForFork1_push_#in~stack.base=|t1Thread1of1ForFork1_push_#in~stack.base_Out1956185839|, t1Thread1of1ForFork1_push_~x=t1Thread1of1ForFork1_push_~x_Out1956185839, t1Thread1of1ForFork1_#t~nondet46=|t1Thread1of1ForFork1_#t~nondet46_Out1956185839|, t1Thread1of1ForFork1_push_#in~stack.offset=|t1Thread1of1ForFork1_push_#in~stack.offset_Out1956185839|, t1Thread1of1ForFork1_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork1_assume_abort_if_not_#in~cond_Out1956185839|, ~#arr~0.base=|~#arr~0.base_In1956185839|} AuxVars[] AssignedVars[t1Thread1of1ForFork1_push_#in~x, t1Thread1of1ForFork1_assume_abort_if_not_~cond, t1Thread1of1ForFork1_push_#in~stack.base, t1Thread1of1ForFork1_push_~x, t1Thread1of1ForFork1_push_#t~nondet36, t1Thread1of1ForFork1_push_~stack.offset, t1Thread1of1ForFork1_push_#res, t1Thread1of1ForFork1_#t~nondet46, t1Thread1of1ForFork1_push_~stack.base, t1Thread1of1ForFork1_push_#in~stack.offset, t1Thread1of1ForFork1_assume_abort_if_not_#in~cond, t1Thread1of1ForFork1_push_#t~ret38] because there is no mapped edge [2020-11-29 20:26:48,116 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L997-2-->L1000: Formula: (and (= ~flag~0_Out26046982 1) (<= |t1Thread1of1ForFork1_#t~ret47_In26046982| 2147483647) (<= 0 (+ |t1Thread1of1ForFork1_#t~ret47_In26046982| 2147483648)) (= |t1Thread1of1ForFork1_reach_error_#t~nondet2.base_In26046982| |t1Thread1of1ForFork1_reach_error_#t~nondet2.base_Out26046982|) (= |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_In26046982| |t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out26046982|) (not (= (- 1) |t1Thread1of1ForFork1_#t~ret47_In26046982|))) InVars {t1Thread1of1ForFork1_#t~ret47=|t1Thread1of1ForFork1_#t~ret47_In26046982|, t1Thread1of1ForFork1_reach_error_#t~nondet2.base=|t1Thread1of1ForFork1_reach_error_#t~nondet2.base_In26046982|, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_In26046982|} OutVars{~flag~0=~flag~0_Out26046982, t1Thread1of1ForFork1_#t~ret47=|t1Thread1of1ForFork1_#t~ret47_Out26046982|, t1Thread1of1ForFork1_reach_error_#t~nondet2.base=|t1Thread1of1ForFork1_reach_error_#t~nondet2.base_Out26046982|, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out26046982|} AuxVars[] AssignedVars[~flag~0, t1Thread1of1ForFork1_#t~ret47, t1Thread1of1ForFork1_reach_error_#t~nondet2.base, t1Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-29 20:26:48,121 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [652] [652] L1012-4-->L1007-6: Formula: (and (not (= (- 2) |t2Thread1of1ForFork0_#t~ret50_In-243753659|)) (= |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out-243753659| |t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_In-243753659|) (= |t2Thread1of1ForFork0_reach_error_#t~nondet2.base_Out-243753659| |t2Thread1of1ForFork0_reach_error_#t~nondet2.base_In-243753659|) (= (+ t2Thread1of1ForFork0_~i~1_In-243753659 1) t2Thread1of1ForFork0_~i~1_Out-243753659) (= (store |#pthreadsMutex_In-243753659| |~#m~0.base_In-243753659| (store (select |#pthreadsMutex_In-243753659| |~#m~0.base_In-243753659|) |~#m~0.offset_In-243753659| 0)) |#pthreadsMutex_Out-243753659|)) InVars {t2Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_In-243753659|, #pthreadsMutex=|#pthreadsMutex_In-243753659|, t2Thread1of1ForFork0_reach_error_#t~nondet2.base=|t2Thread1of1ForFork0_reach_error_#t~nondet2.base_In-243753659|, ~#m~0.base=|~#m~0.base_In-243753659|, t2Thread1of1ForFork0_#t~ret50=|t2Thread1of1ForFork0_#t~ret50_In-243753659|, ~#m~0.offset=|~#m~0.offset_In-243753659|, t2Thread1of1ForFork0_~i~1=t2Thread1of1ForFork0_~i~1_In-243753659} OutVars{#pthreadsMutex=|#pthreadsMutex_Out-243753659|, t2Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out-243753659|, t2Thread1of1ForFork0_reach_error_#t~nondet2.base=|t2Thread1of1ForFork0_reach_error_#t~nondet2.base_Out-243753659|, ~#m~0.base=|~#m~0.base_In-243753659|, t2Thread1of1ForFork0_#t~ret50=|t2Thread1of1ForFork0_#t~ret50_Out-243753659|, ~#m~0.offset=|~#m~0.offset_In-243753659|, t2Thread1of1ForFork0_#t~post48=|t2Thread1of1ForFork0_#t~post48_Out-243753659|, t2Thread1of1ForFork0_~i~1=t2Thread1of1ForFork0_~i~1_Out-243753659} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork0_reach_error_#t~nondet2.offset, t2Thread1of1ForFork0_reach_error_#t~nondet2.base, t2Thread1of1ForFork0_#t~ret50, t2Thread1of1ForFork0_#t~post48, t2Thread1of1ForFork0_~i~1] because there is no mapped edge [2020-11-29 20:26:48,210 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_db33db0c-a433-43c7-89d6-80b13540f199/bin/uautomizer/witness.graphml [2020-11-29 20:26:48,210 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:26:48,211 INFO L168 Benchmark]: Toolchain (without parser) took 15321.02 ms. Allocated memory was 86.0 MB in the beginning and 232.8 MB in the end (delta: 146.8 MB). Free memory was 58.9 MB in the beginning and 132.0 MB in the end (delta: -73.1 MB). Peak memory consumption was 75.0 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:48,212 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:26:48,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 961.27 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 58.7 MB in the beginning and 53.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:48,213 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.44 ms. Allocated memory is still 109.1 MB. Free memory was 53.1 MB in the beginning and 50.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:48,213 INFO L168 Benchmark]: Boogie Preprocessor took 40.28 ms. Allocated memory is still 109.1 MB. Free memory was 50.5 MB in the beginning and 49.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:48,214 INFO L168 Benchmark]: RCFGBuilder took 995.38 ms. Allocated memory is still 109.1 MB. Free memory was 49.1 MB in the beginning and 60.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:48,214 INFO L168 Benchmark]: TraceAbstraction took 13143.42 ms. Allocated memory was 109.1 MB in the beginning and 232.8 MB in the end (delta: 123.7 MB). Free memory was 60.8 MB in the beginning and 142.5 MB in the end (delta: -81.7 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:48,215 INFO L168 Benchmark]: Witness Printer took 111.66 ms. Allocated memory is still 232.8 MB. Free memory was 142.5 MB in the beginning and 132.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:26:48,218 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 86.0 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 961.27 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 58.7 MB in the beginning and 53.1 MB in the end (delta: 5.6 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.44 ms. Allocated memory is still 109.1 MB. Free memory was 53.1 MB in the beginning and 50.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.28 ms. Allocated memory is still 109.1 MB. Free memory was 50.5 MB in the beginning and 49.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 995.38 ms. Allocated memory is still 109.1 MB. Free memory was 49.1 MB in the beginning and 60.8 MB in the end (delta: -11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13143.42 ms. Allocated memory was 109.1 MB in the beginning and 232.8 MB in the end (delta: 123.7 MB). Free memory was 60.8 MB in the beginning and 142.5 MB in the end (delta: -81.7 MB). Peak memory consumption was 42.9 MB. Max. memory is 16.1 GB. * Witness Printer took 111.66 ms. Allocated memory is still 232.8 MB. Free memory was 142.5 MB in the beginning and 132.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 5728 VarBasedMoverChecksPositive, 100 VarBasedMoverChecksNegative, 35 SemBasedMoverChecksPositive, 65 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.7s, 345 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.7s, 156 PlacesBefore, 40 PlacesAfterwards, 163 TransitionsBefore, 41 TransitionsAfterwards, 7732 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 91 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 6 ChoiceCompositions, 157 TotalNumberOfCompositions, 13131 MoverChecksTotal - CounterExampleResult [Line: 20]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(5)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1021] 0 pthread_t id1, id2; [L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={9:0}, flag=0, m={7:0}, top=0] [L990] 1 int i; [L991] 1 unsigned int tmp; [L992] 1 i=0 VAL [arr={9:0}, flag=0, m={7:0}, top=0] [L992] COND TRUE 1 i<(5) [L995] 1 tmp = __VERIFIER_nondet_uint() [L962] COND FALSE 1 !(top==(5)) [L954] 1 return top; [L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={9:0}, flag=0, m={7:0}, top=0] [L1006] 2 int i; [L1007] 2 i=0 VAL [arr={9:0}, flag=0, m={7:0}, top=0] [L969] 1 stack[get_top()] = x [L946] 1 top++ [L972] 1 return 0; [L992] 1 i++ VAL [arr={9:0}, flag=1, m={7:0}, top=1] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L954] 2 return top; [L976] COND FALSE 2 !(get_top()==0) [L950] 2 top-- VAL [arr={9:0}, flag=1, m={7:0}, top=0] [L954] 2 return top; VAL [arr={9:0}, flag=1, m={7:0}, top=0] [L984] EXPR 2 stack[get_top()] [L984] 2 return stack[get_top()]; [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L954] 2 return top; [L976] COND TRUE 2 get_top()==0 [L979] 2 return (-2); [L1012] COND TRUE 2 !(pop(arr)!=(-2)) [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack-2.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={9:0}, flag=1, m={7:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 150 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.8s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 397 SDtfs, 513 SDslu, 1047 SDs, 0 SdLazy, 801 SolverSat, 46 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=688occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1148 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 12776 SizeOfPredicates, 5 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 6/34 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 incorrect! Received shutdown request...