./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longest-1.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_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longest-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/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 bad9cc2e90a70823ddce7e56d5b422bec700ab42 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:58:01,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:01,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:01,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:01,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:01,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:01,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:01,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:01,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:01,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:01,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:01,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:01,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:01,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:01,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:01,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:01,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:01,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:01,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:01,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:01,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:01,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:01,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:01,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:01,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:01,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:01,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:01,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:01,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:01,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:01,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:01,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:01,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:01,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:01,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:01,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:01,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:01,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:01,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:01,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:01,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:01,283 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:58:01,331 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:01,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:01,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:01,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:01,335 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:01,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:01,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:01,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:58:01,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:01,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:01,338 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:58:01,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:58:01,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:58:01,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:01,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:01,339 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:01,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:58:01,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:01,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:01,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:58:01,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:58:01,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:01,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:01,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:58:01,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:58:01,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:58:01,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:58:01,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:58:01,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:01,343 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_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad9cc2e90a70823ddce7e56d5b422bec700ab42 [2020-11-29 23:58:01,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:01,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:01,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:01,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:01,703 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:01,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longest-1.i [2020-11-29 23:58:01,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/data/d84354ddb/650ef6a19a604abf917d364db5db72f7/FLAG28eaac50a [2020-11-29 23:58:02,656 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:02,657 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/sv-benchmarks/c/pthread/stack_longest-1.i [2020-11-29 23:58:02,691 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/data/d84354ddb/650ef6a19a604abf917d364db5db72f7/FLAG28eaac50a [2020-11-29 23:58:02,849 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/data/d84354ddb/650ef6a19a604abf917d364db5db72f7 [2020-11-29 23:58:02,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:02,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:02,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:02,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:02,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:02,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:02" (1/1) ... [2020-11-29 23:58:02,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ada49e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:02, skipping insertion in model container [2020-11-29 23:58:02,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:02" (1/1) ... [2020-11-29 23:58:02,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:02,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:03,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:03,571 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:03,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:03,847 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:03,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03 WrapperNode [2020-11-29 23:58:03,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:03,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:03,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:03,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:03,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... [2020-11-29 23:58:03,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... [2020-11-29 23:58:03,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:03,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:03,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:03,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:03,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... [2020-11-29 23:58:03,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... [2020-11-29 23:58:04,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... [2020-11-29 23:58:04,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... [2020-11-29 23:58:04,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... [2020-11-29 23:58:04,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... [2020-11-29 23:58:04,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... [2020-11-29 23:58:04,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:04,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:04,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:04,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:04,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/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 23:58:04,139 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-29 23:58:04,139 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-29 23:58:04,140 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-29 23:58:04,141 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-29 23:58:04,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:04,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:58:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:58:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:58:04,143 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-29 23:58:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:58:04,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:04,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:58:04,146 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 23:58:04,837 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:58:04,837 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-11-29 23:58:04,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:04 BoogieIcfgContainer [2020-11-29 23:58:04,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:58:04,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:58:04,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:58:04,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:58:04,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:58:02" (1/3) ... [2020-11-29 23:58:04,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f894774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:04, skipping insertion in model container [2020-11-29 23:58:04,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:03" (2/3) ... [2020-11-29 23:58:04,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f894774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:04, skipping insertion in model container [2020-11-29 23:58:04,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:04" (3/3) ... [2020-11-29 23:58:04,858 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longest-1.i [2020-11-29 23:58:04,871 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-29 23:58:04,872 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:58:04,878 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 23:58:04,879 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-29 23:58:04,935 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,935 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,935 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,935 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,936 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,936 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,936 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,936 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,938 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,939 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,939 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,939 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,940 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,940 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,940 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,941 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,941 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,941 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,941 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,942 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,942 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,943 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,943 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,943 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,943 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,944 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,944 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,944 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,945 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,946 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,946 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,946 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,946 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,947 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,947 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,948 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,948 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,948 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,948 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,949 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,949 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,949 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,949 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,950 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,950 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,950 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,950 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,950 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,951 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,951 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,951 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,951 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,952 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,952 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,952 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,953 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,953 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,953 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,953 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,953 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,954 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,955 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,955 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,955 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,956 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,957 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,957 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,958 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,958 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,958 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,961 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,961 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,961 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,962 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,962 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,962 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,963 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,963 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,964 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,964 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,965 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,965 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,966 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,968 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,969 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,969 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,969 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,969 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,970 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,970 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,971 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,972 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,976 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,977 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,977 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,977 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,978 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,979 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,979 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,981 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,981 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,982 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,982 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,986 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,986 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,986 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,986 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,987 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,988 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,989 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,989 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,989 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,989 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,989 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,990 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,990 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,990 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,990 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,990 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,990 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,991 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,991 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,991 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,991 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,991 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,991 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,992 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,992 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,994 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,994 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,995 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,995 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,996 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,996 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,996 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,997 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,997 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,997 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,997 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,997 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,998 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,998 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,998 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,998 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,998 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,998 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,999 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,999 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,999 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,999 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,999 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:04,999 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,000 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,013 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,013 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,013 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,014 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,014 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,014 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,014 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,014 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,014 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,015 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,016 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,016 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,016 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,016 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,016 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,016 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-29 23:58:05,024 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-29 23:58:05,037 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 23:58:05,061 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:58:05,062 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:58:05,062 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:58:05,062 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:58:05,062 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:58:05,063 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:58:05,063 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:58:05,063 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:58:05,086 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-29 23:58:05,089 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-29 23:58:05,093 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-29 23:58:05,095 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 340 flow [2020-11-29 23:58:05,230 INFO L129 PetriNetUnfolder]: 13/159 cut-off events. [2020-11-29 23:58:05,230 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-29 23:58:05,244 INFO L80 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 159 events. 13/159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 449 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 123. Up to 3 conditions per place. [2020-11-29 23:58:05,256 INFO L116 LiptonReduction]: Number of co-enabled transitions 7732 [2020-11-29 23:58:08,112 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-11-29 23:58:08,988 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-11-29 23:58:09,637 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-11-29 23:58:09,781 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-11-29 23:58:10,804 WARN L193 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 135 [2020-11-29 23:58:11,217 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-11-29 23:58:11,465 INFO L131 LiptonReduction]: Checked pairs total: 11922 [2020-11-29 23:58:11,465 INFO L133 LiptonReduction]: Total number of compositions: 153 [2020-11-29 23:58:11,471 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 40 transitions, 102 flow [2020-11-29 23:58:11,501 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-11-29 23:58:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-11-29 23:58:11,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 23:58:11,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:11,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:58:11,512 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 23:58:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:11,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1856423894, now seen corresponding path program 1 times [2020-11-29 23:58:11,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:11,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849446636] [2020-11-29 23:58:11,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:11,800 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 23:58:11,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849446636] [2020-11-29 23:58:11,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:11,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:11,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294527473] [2020-11-29 23:58:11,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:58:11,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:11,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:58:11,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:58:11,839 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-11-29 23:58:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:12,018 INFO L93 Difference]: Finished difference Result 602 states and 1541 transitions. [2020-11-29 23:58:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:58:12,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-29 23:58:12,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:12,056 INFO L225 Difference]: With dead ends: 602 [2020-11-29 23:58:12,056 INFO L226 Difference]: Without dead ends: 580 [2020-11-29 23:58:12,058 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 23:58:12,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-11-29 23:58:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 427. [2020-11-29 23:58:12,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-29 23:58:12,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1148 transitions. [2020-11-29 23:58:12,202 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1148 transitions. Word has length 6 [2020-11-29 23:58:12,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:12,203 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 1148 transitions. [2020-11-29 23:58:12,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:58:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1148 transitions. [2020-11-29 23:58:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 23:58:12,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:12,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:12,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:58:12,206 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 23:58:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:12,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1263754107, now seen corresponding path program 1 times [2020-11-29 23:58:12,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:12,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770166300] [2020-11-29 23:58:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:12,339 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 23:58:12,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770166300] [2020-11-29 23:58:12,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:12,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:12,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447703637] [2020-11-29 23:58:12,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:58:12,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:12,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:58:12,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:58:12,346 INFO L87 Difference]: Start difference. First operand 427 states and 1148 transitions. Second operand 3 states. [2020-11-29 23:58:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:12,410 INFO L93 Difference]: Finished difference Result 530 states and 1370 transitions. [2020-11-29 23:58:12,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:58:12,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 23:58:12,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:12,420 INFO L225 Difference]: With dead ends: 530 [2020-11-29 23:58:12,420 INFO L226 Difference]: Without dead ends: 508 [2020-11-29 23:58:12,421 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 23:58:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-29 23:58:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 468. [2020-11-29 23:58:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-11-29 23:58:12,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1250 transitions. [2020-11-29 23:58:12,459 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1250 transitions. Word has length 8 [2020-11-29 23:58:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:12,462 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 1250 transitions. [2020-11-29 23:58:12,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:58:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1250 transitions. [2020-11-29 23:58:12,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:58:12,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:12,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:12,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:58:12,466 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 23:58:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1433094520, now seen corresponding path program 1 times [2020-11-29 23:58:12,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:12,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168692772] [2020-11-29 23:58:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:12,588 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 23:58:12,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168692772] [2020-11-29 23:58:12,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:12,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:12,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646504974] [2020-11-29 23:58:12,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:58:12,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:12,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:58:12,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:58:12,591 INFO L87 Difference]: Start difference. First operand 468 states and 1250 transitions. Second operand 3 states. [2020-11-29 23:58:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:12,624 INFO L93 Difference]: Finished difference Result 504 states and 1343 transitions. [2020-11-29 23:58:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:58:12,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-29 23:58:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:12,629 INFO L225 Difference]: With dead ends: 504 [2020-11-29 23:58:12,629 INFO L226 Difference]: Without dead ends: 504 [2020-11-29 23:58:12,629 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 23:58:12,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-29 23:58:12,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-29 23:58:12,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-11-29 23:58:12,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1343 transitions. [2020-11-29 23:58:12,653 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1343 transitions. Word has length 10 [2020-11-29 23:58:12,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:12,654 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 1343 transitions. [2020-11-29 23:58:12,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:58:12,654 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1343 transitions. [2020-11-29 23:58:12,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 23:58:12,662 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:12,662 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:12,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:58:12,663 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 23:58:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:12,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1251716059, now seen corresponding path program 1 times [2020-11-29 23:58:12,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:12,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138956068] [2020-11-29 23:58:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:12,796 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 23:58:12,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138956068] [2020-11-29 23:58:12,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985379391] [2020-11-29 23:58:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/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 23:58:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:12,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:58:12,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:13,089 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 23:58:13,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:58:13,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-29 23:58:13,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533186655] [2020-11-29 23:58:13,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:58:13,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:13,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:58:13,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:58:13,091 INFO L87 Difference]: Start difference. First operand 504 states and 1343 transitions. Second operand 7 states. [2020-11-29 23:58:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:13,311 INFO L93 Difference]: Finished difference Result 940 states and 2424 transitions. [2020-11-29 23:58:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:13,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-29 23:58:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:13,328 INFO L225 Difference]: With dead ends: 940 [2020-11-29 23:58:13,333 INFO L226 Difference]: Without dead ends: 940 [2020-11-29 23:58:13,334 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 23:58:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-11-29 23:58:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 688. [2020-11-29 23:58:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-11-29 23:58:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1842 transitions. [2020-11-29 23:58:13,373 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1842 transitions. Word has length 14 [2020-11-29 23:58:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:13,374 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 1842 transitions. [2020-11-29 23:58:13,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:58:13,374 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1842 transitions. [2020-11-29 23:58:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:58:13,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:13,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:13,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:13,604 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 23:58:13,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:13,604 INFO L82 PathProgramCache]: Analyzing trace with hash -947618172, now seen corresponding path program 1 times [2020-11-29 23:58:13,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:13,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305961164] [2020-11-29 23:58:13,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:13,675 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 23:58:13,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305961164] [2020-11-29 23:58:13,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:13,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:58:13,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534035727] [2020-11-29 23:58:13,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:58:13,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:13,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:58:13,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:58:13,677 INFO L87 Difference]: Start difference. First operand 688 states and 1842 transitions. Second operand 3 states. [2020-11-29 23:58:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:13,725 INFO L93 Difference]: Finished difference Result 343 states and 775 transitions. [2020-11-29 23:58:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:58:13,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-29 23:58:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:13,729 INFO L225 Difference]: With dead ends: 343 [2020-11-29 23:58:13,730 INFO L226 Difference]: Without dead ends: 339 [2020-11-29 23:58:13,731 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 23:58:13,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-11-29 23:58:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 313. [2020-11-29 23:58:13,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-11-29 23:58:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 700 transitions. [2020-11-29 23:58:13,742 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 700 transitions. Word has length 16 [2020-11-29 23:58:13,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:13,742 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 700 transitions. [2020-11-29 23:58:13,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:58:13,743 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 700 transitions. [2020-11-29 23:58:13,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 23:58:13,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:13,744 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 23:58:13,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:58:13,744 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 23:58:13,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:13,745 INFO L82 PathProgramCache]: Analyzing trace with hash 690121372, now seen corresponding path program 1 times [2020-11-29 23:58:13,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:13,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268949043] [2020-11-29 23:58:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:13,859 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 23:58:13,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268949043] [2020-11-29 23:58:13,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:13,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:58:13,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794801312] [2020-11-29 23:58:13,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:58:13,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:13,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:58:13,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:13,861 INFO L87 Difference]: Start difference. First operand 313 states and 700 transitions. Second operand 5 states. [2020-11-29 23:58:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:13,963 INFO L93 Difference]: Finished difference Result 473 states and 1056 transitions. [2020-11-29 23:58:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:58:13,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-29 23:58:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:13,969 INFO L225 Difference]: With dead ends: 473 [2020-11-29 23:58:13,969 INFO L226 Difference]: Without dead ends: 473 [2020-11-29 23:58:13,970 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 23:58:13,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-11-29 23:58:13,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 351. [2020-11-29 23:58:13,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-11-29 23:58:13,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 791 transitions. [2020-11-29 23:58:13,986 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 791 transitions. Word has length 17 [2020-11-29 23:58:13,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:13,987 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 791 transitions. [2020-11-29 23:58:13,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:58:13,987 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 791 transitions. [2020-11-29 23:58:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 23:58:13,989 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:13,989 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 23:58:13,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 23:58:13,990 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 23:58:13,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:13,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1892561304, now seen corresponding path program 1 times [2020-11-29 23:58:13,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:13,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517307771] [2020-11-29 23:58:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:14,627 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 14 [2020-11-29 23:58:14,866 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2020-11-29 23:58:15,039 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 23:58:15,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517307771] [2020-11-29 23:58:15,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:15,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:58:15,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775680399] [2020-11-29 23:58:15,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:58:15,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:58:15,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:58:15,042 INFO L87 Difference]: Start difference. First operand 351 states and 791 transitions. Second operand 8 states. [2020-11-29 23:58:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:15,567 INFO L93 Difference]: Finished difference Result 653 states and 1454 transitions. [2020-11-29 23:58:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:58:15,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-29 23:58:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:15,574 INFO L225 Difference]: With dead ends: 653 [2020-11-29 23:58:15,574 INFO L226 Difference]: Without dead ends: 653 [2020-11-29 23:58:15,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:58:15,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-11-29 23:58:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 484. [2020-11-29 23:58:15,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-11-29 23:58:15,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1129 transitions. [2020-11-29 23:58:15,597 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1129 transitions. Word has length 21 [2020-11-29 23:58:15,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:15,598 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 1129 transitions. [2020-11-29 23:58:15,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:58:15,599 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1129 transitions. [2020-11-29 23:58:15,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 23:58:15,600 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:15,601 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 23:58:15,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 23:58:15,601 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 23:58:15,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:15,602 INFO L82 PathProgramCache]: Analyzing trace with hash 158059450, now seen corresponding path program 2 times [2020-11-29 23:58:15,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:15,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833436925] [2020-11-29 23:58:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:15,994 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 23:58:15,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833436925] [2020-11-29 23:58:15,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:15,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:58:15,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194875258] [2020-11-29 23:58:15,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:58:15,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:15,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:58:15,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:58:15,996 INFO L87 Difference]: Start difference. First operand 484 states and 1129 transitions. Second operand 8 states. [2020-11-29 23:58:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:16,390 INFO L93 Difference]: Finished difference Result 779 states and 1769 transitions. [2020-11-29 23:58:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:58:16,391 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-29 23:58:16,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:16,398 INFO L225 Difference]: With dead ends: 779 [2020-11-29 23:58:16,398 INFO L226 Difference]: Without dead ends: 779 [2020-11-29 23:58:16,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:58:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-11-29 23:58:16,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 470. [2020-11-29 23:58:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-11-29 23:58:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1092 transitions. [2020-11-29 23:58:16,422 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1092 transitions. Word has length 21 [2020-11-29 23:58:16,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:16,422 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 1092 transitions. [2020-11-29 23:58:16,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:58:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1092 transitions. [2020-11-29 23:58:16,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 23:58:16,424 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:16,424 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-29 23:58:16,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 23:58:16,424 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 23:58:16,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:16,425 INFO L82 PathProgramCache]: Analyzing trace with hash 893207840, now seen corresponding path program 2 times [2020-11-29 23:58:16,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:16,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561759509] [2020-11-29 23:58:16,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:16,546 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 23:58:16,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561759509] [2020-11-29 23:58:16,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602965525] [2020-11-29 23:58:16,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/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 23:58:16,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:58:16,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:58:16,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:58:16,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:16,781 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 23:58:16,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 23:58:16,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-29 23:58:16,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955355343] [2020-11-29 23:58:16,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 23:58:16,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:16,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:58:16,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:58:16,783 INFO L87 Difference]: Start difference. First operand 470 states and 1092 transitions. Second operand 9 states. [2020-11-29 23:58:16,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:16,935 INFO L93 Difference]: Finished difference Result 778 states and 1761 transitions. [2020-11-29 23:58:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:58:16,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-11-29 23:58:16,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:16,943 INFO L225 Difference]: With dead ends: 778 [2020-11-29 23:58:16,943 INFO L226 Difference]: Without dead ends: 778 [2020-11-29 23:58:16,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:58:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-11-29 23:58:16,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 560. [2020-11-29 23:58:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-11-29 23:58:16,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1291 transitions. [2020-11-29 23:58:16,969 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1291 transitions. Word has length 22 [2020-11-29 23:58:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:16,971 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1291 transitions. [2020-11-29 23:58:16,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 23:58:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1291 transitions. [2020-11-29 23:58:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 23:58:16,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:16,973 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 23:58:17,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:17,200 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:17,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:17,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1256686503, now seen corresponding path program 1 times [2020-11-29 23:58:17,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:17,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669658984] [2020-11-29 23:58:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:17,307 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 23:58:17,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669658984] [2020-11-29 23:58:17,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302877414] [2020-11-29 23:58:17,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:17,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:58:17,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 23:58:17,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:58:17,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-11-29 23:58:17,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138220004] [2020-11-29 23:58:17,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:58:17,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:17,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:17,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:58:17,483 INFO L87 Difference]: Start difference. First operand 560 states and 1291 transitions. Second operand 6 states. [2020-11-29 23:58:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:17,631 INFO L93 Difference]: Finished difference Result 775 states and 1744 transitions. [2020-11-29 23:58:17,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:58:17,632 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-29 23:58:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:17,638 INFO L225 Difference]: With dead ends: 775 [2020-11-29 23:58:17,639 INFO L226 Difference]: Without dead ends: 775 [2020-11-29 23:58:17,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:58:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-11-29 23:58:17,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 586. [2020-11-29 23:58:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-11-29 23:58:17,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1362 transitions. [2020-11-29 23:58:17,691 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1362 transitions. Word has length 24 [2020-11-29 23:58:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:17,692 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1362 transitions. [2020-11-29 23:58:17,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:58:17,692 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1362 transitions. [2020-11-29 23:58:17,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 23:58:17,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:17,694 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 23:58:17,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 23:58:17,904 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:17,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:17,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1256691651, now seen corresponding path program 1 times [2020-11-29 23:58:17,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:17,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650527132] [2020-11-29 23:58:17,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:17,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:17,956 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:58:18,015 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:58:18,054 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:58:18,054 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:58:18,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 23:58:18,055 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-29 23:58:18,056 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-29 23:58:18,056 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-29 23:58:18,064 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [636] [636] L994-1-->L996-1: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-178475995 4294967296))) (and (= |t1Thread1of1ForFork0_push_#in~stack.base_Out-178475995| |~#arr~0.base_In-178475995|) (= |t1Thread1of1ForFork0_push_#in~stack.offset_Out-178475995| |~#arr~0.offset_In-178475995|) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-178475995| 1) (< .cse0 800) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-178475995 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-178475995|) (= |t1Thread1of1ForFork0_push_#in~x_Out-178475995| .cse0))) InVars {~#arr~0.offset=|~#arr~0.offset_In-178475995|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-178475995, ~#arr~0.base=|~#arr~0.base_In-178475995|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-178475995|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-178475995|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-178475995, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-178475995|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-178475995, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_Out-178475995|, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-178475995|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-178475995|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-178475995|, ~#arr~0.base=|~#arr~0.base_In-178475995|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_#t~nondet46, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset] because there is no mapped edge [2020-11-29 23:58:18,072 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [635] [635] L996-2-->L999: Formula: (and (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1636869139| |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1636869139|) (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In1636869139| |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1636869139|) (<= 0 (+ |t1Thread1of1ForFork0_#t~ret47_In1636869139| 2147483648)) (not (= (- 1) |t1Thread1of1ForFork0_#t~ret47_In1636869139|)) (= ~flag~0_Out1636869139 1) (<= |t1Thread1of1ForFork0_#t~ret47_In1636869139| 2147483647)) InVars {t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_In1636869139|, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In1636869139|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1636869139|} OutVars{t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_Out1636869139|, ~flag~0=~flag~0_Out1636869139, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1636869139|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1636869139|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_#t~ret47, ~flag~0, t1Thread1of1ForFork0_reach_error_#t~nondet2.base, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-29 23:58:18,081 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L1011-4-->L1006-6: Formula: (and (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In1174855941| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out1174855941|) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In1174855941|)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In1174855941| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out1174855941|) (= t2Thread1of1ForFork1_~i~1_Out1174855941 (+ t2Thread1of1ForFork1_~i~1_In1174855941 1)) (= (store |#pthreadsMutex_In1174855941| |~#m~0.base_In1174855941| (store (select |#pthreadsMutex_In1174855941| |~#m~0.base_In1174855941|) |~#m~0.offset_In1174855941| 0)) |#pthreadsMutex_Out1174855941|)) InVars {t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In1174855941|, #pthreadsMutex=|#pthreadsMutex_In1174855941|, ~#m~0.base=|~#m~0.base_In1174855941|, ~#m~0.offset=|~#m~0.offset_In1174855941|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In1174855941|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In1174855941, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In1174855941|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out1174855941|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out1174855941|, ~#m~0.base=|~#m~0.base_In1174855941|, ~#m~0.offset=|~#m~0.offset_In1174855941|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out1174855941|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out1174855941|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out1174855941, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out1174855941|} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork1_reach_error_#t~nondet2.base, t2Thread1of1ForFork1_#t~post48, t2Thread1of1ForFork1_#t~ret50, t2Thread1of1ForFork1_~i~1, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-29 23:58:18,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:58:18 BasicIcfg [2020-11-29 23:58:18,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:58:18,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:58:18,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:58:18,170 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:58:18,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:04" (3/4) ... [2020-11-29 23:58:18,178 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:58:18,184 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [636] [636] L994-1-->L996-1: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-178475995 4294967296))) (and (= |t1Thread1of1ForFork0_push_#in~stack.base_Out-178475995| |~#arr~0.base_In-178475995|) (= |t1Thread1of1ForFork0_push_#in~stack.offset_Out-178475995| |~#arr~0.offset_In-178475995|) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-178475995| 1) (< .cse0 800) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-178475995 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-178475995|) (= |t1Thread1of1ForFork0_push_#in~x_Out-178475995| .cse0))) InVars {~#arr~0.offset=|~#arr~0.offset_In-178475995|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-178475995, ~#arr~0.base=|~#arr~0.base_In-178475995|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-178475995|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-178475995|, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-178475995, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-178475995|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-178475995, t1Thread1of1ForFork0_#t~nondet46=|t1Thread1of1ForFork0_#t~nondet46_Out-178475995|, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-178475995|, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-178475995|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-178475995|, ~#arr~0.base=|~#arr~0.base_In-178475995|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_#t~nondet46, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset] because there is no mapped edge [2020-11-29 23:58:18,188 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [635] [635] L996-2-->L999: Formula: (and (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1636869139| |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1636869139|) (= |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In1636869139| |t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1636869139|) (<= 0 (+ |t1Thread1of1ForFork0_#t~ret47_In1636869139| 2147483648)) (not (= (- 1) |t1Thread1of1ForFork0_#t~ret47_In1636869139|)) (= ~flag~0_Out1636869139 1) (<= |t1Thread1of1ForFork0_#t~ret47_In1636869139| 2147483647)) InVars {t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_In1636869139|, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_In1636869139|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_In1636869139|} OutVars{t1Thread1of1ForFork0_#t~ret47=|t1Thread1of1ForFork0_#t~ret47_Out1636869139|, ~flag~0=~flag~0_Out1636869139, t1Thread1of1ForFork0_reach_error_#t~nondet2.base=|t1Thread1of1ForFork0_reach_error_#t~nondet2.base_Out1636869139|, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset=|t1Thread1of1ForFork0_reach_error_#t~nondet2.offset_Out1636869139|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_#t~ret47, ~flag~0, t1Thread1of1ForFork0_reach_error_#t~nondet2.base, t1Thread1of1ForFork0_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-29 23:58:18,191 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [643] [643] L1011-4-->L1006-6: Formula: (and (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In1174855941| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out1174855941|) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In1174855941|)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In1174855941| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out1174855941|) (= t2Thread1of1ForFork1_~i~1_Out1174855941 (+ t2Thread1of1ForFork1_~i~1_In1174855941 1)) (= (store |#pthreadsMutex_In1174855941| |~#m~0.base_In1174855941| (store (select |#pthreadsMutex_In1174855941| |~#m~0.base_In1174855941|) |~#m~0.offset_In1174855941| 0)) |#pthreadsMutex_Out1174855941|)) InVars {t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In1174855941|, #pthreadsMutex=|#pthreadsMutex_In1174855941|, ~#m~0.base=|~#m~0.base_In1174855941|, ~#m~0.offset=|~#m~0.offset_In1174855941|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In1174855941|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In1174855941, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In1174855941|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out1174855941|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out1174855941|, ~#m~0.base=|~#m~0.base_In1174855941|, ~#m~0.offset=|~#m~0.offset_In1174855941|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out1174855941|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out1174855941|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out1174855941, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out1174855941|} AuxVars[] AssignedVars[#pthreadsMutex, t2Thread1of1ForFork1_reach_error_#t~nondet2.base, t2Thread1of1ForFork1_#t~post48, t2Thread1of1ForFork1_#t~ret50, t2Thread1of1ForFork1_~i~1, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset] because there is no mapped edge [2020-11-29 23:58:18,280 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b2e8f9a0-19b5-409e-a69d-9fd4daaca079/bin/uautomizer/witness.graphml [2020-11-29 23:58:18,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:58:18,281 INFO L168 Benchmark]: Toolchain (without parser) took 15424.77 ms. Allocated memory was 100.7 MB in the beginning and 211.8 MB in the end (delta: 111.1 MB). Free memory was 71.0 MB in the beginning and 139.9 MB in the end (delta: -68.9 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:18,282 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 100.7 MB. Free memory is still 58.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:58:18,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 990.20 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.7 MB in the beginning and 79.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:18,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.71 ms. Allocated memory is still 121.6 MB. Free memory was 79.6 MB in the beginning and 77.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:18,284 INFO L168 Benchmark]: Boogie Preprocessor took 63.48 ms. Allocated memory is still 121.6 MB. Free memory was 77.5 MB in the beginning and 75.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:18,284 INFO L168 Benchmark]: RCFGBuilder took 801.31 ms. Allocated memory is still 121.6 MB. Free memory was 75.4 MB in the beginning and 42.7 MB in the end (delta: 32.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:18,285 INFO L168 Benchmark]: TraceAbstraction took 13320.13 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 94.4 MB in the beginning and 150.4 MB in the end (delta: -55.9 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:18,286 INFO L168 Benchmark]: Witness Printer took 110.25 ms. Allocated memory is still 211.8 MB. Free memory was 150.4 MB in the beginning and 139.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:58:18,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 100.7 MB. Free memory is still 58.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 990.20 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.7 MB in the beginning and 79.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 31.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.71 ms. Allocated memory is still 121.6 MB. Free memory was 79.6 MB in the beginning and 77.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.48 ms. Allocated memory is still 121.6 MB. Free memory was 77.5 MB in the beginning and 75.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 801.31 ms. Allocated memory is still 121.6 MB. Free memory was 75.4 MB in the beginning and 42.7 MB in the end (delta: 32.7 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13320.13 ms. Allocated memory was 121.6 MB in the beginning and 211.8 MB in the end (delta: 90.2 MB). Free memory was 94.4 MB in the beginning and 150.4 MB in the end (delta: -55.9 MB). Peak memory consumption was 34.2 MB. Max. memory is 16.1 GB. * Witness Printer took 110.25 ms. Allocated memory is still 211.8 MB. Free memory was 150.4 MB in the beginning and 139.9 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 5574 VarBasedMoverChecksPositive, 81 VarBasedMoverChecksNegative, 20 SemBasedMoverChecksPositive, 61 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.6s, 302 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.3s, 152 PlacesBefore, 40 PlacesAfterwards, 159 TransitionsBefore, 40 TransitionsAfterwards, 7732 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 93 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 23 ConcurrentYvCompositions, 7 ChoiceCompositions, 153 TotalNumberOfCompositions, 11922 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[(800)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1020] 0 pthread_t id1, id2; [L1022] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L989] 1 int i; [L990] 1 unsigned int tmp; [L991] 1 i=0 VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L991] COND TRUE 1 i<(800) [L994] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L961] COND FALSE 1 !(top==(800)) VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L1023] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L1005] 2 int i; [L1006] 2 i=0 VAL [arr={9:0}, flag=0, m={13:0}, top=0] [L953] 1 return top; [L968] 1 stack[get_top()] = x [L945] 1 top++ [L971] 1 return 0; [L991] 1 i++ VAL [arr={9:0}, flag=1, m={13:0}, top=1] [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L953] 2 return top; [L975] COND FALSE 2 !(get_top()==0) [L949] 2 top-- [L953] 2 return top; [L983] EXPR 2 stack[get_top()] [L983] 2 return stack[get_top()]; [L1006] COND TRUE 2 i<(800) [L1009] COND TRUE 2 \read(flag) [L953] 2 return top; [L975] COND TRUE 2 get_top()==0 [L978] 2 return (-2); [L1011] COND TRUE 2 !(pop(arr)!=(-2)) [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack_longest-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={9:0}, flag=1, m={13:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 146 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.9s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.4s, HoareTripleCheckerStatistics: 445 SDtfs, 563 SDslu, 922 SDs, 0 SdLazy, 468 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s 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: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 1478 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 206 ConstructedInterpolants, 0 QuantifiedInterpolants, 42584 SizeOfPredicates, 9 NumberOfNonLiveVariables, 594 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 10/40 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...