./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/stack_longer-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_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/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 13f29567e5bda53c24647cdbec0951bfcde74176 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:00:40,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:00:40,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:00:40,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:00:40,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:00:40,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:00:40,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:00:40,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:00:40,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:00:40,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:00:40,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:00:40,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:00:40,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:00:40,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:00:40,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:00:40,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:00:40,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:00:40,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:00:40,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:00:40,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:00:40,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:00:40,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:00:40,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:00:40,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:00:40,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:00:40,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:00:40,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:00:40,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:00:40,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:00:40,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:00:40,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:00:40,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:00:40,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:00:40,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:00:40,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:00:40,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:00:40,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:00:40,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:00:40,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:00:40,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:00:40,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:00:40,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:00:40,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:00:40,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:00:40,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:00:40,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:00:40,654 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:00:40,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:00:40,655 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:00:40,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:00:40,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:00:40,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:00:40,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:00:40,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:00:40,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:00:40,657 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:00:40,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:00:40,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:00:40,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:00:40,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:00:40,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:00:40,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:00:40,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:00:40,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:00:40,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:00:40,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:00:40,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:00:40,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:00:40,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:00:40,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:00:40,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:00:40,664 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_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13f29567e5bda53c24647cdbec0951bfcde74176 [2020-11-30 00:00:40,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:00:41,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:00:41,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:00:41,033 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:00:41,036 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:00:41,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/../../sv-benchmarks/c/pthread/stack_longer-1.i [2020-11-30 00:00:41,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/data/167c233ef/c93a75ba840a42d3894e373e22d38042/FLAG62c2b51f0 [2020-11-30 00:00:41,853 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:00:41,854 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/sv-benchmarks/c/pthread/stack_longer-1.i [2020-11-30 00:00:41,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/data/167c233ef/c93a75ba840a42d3894e373e22d38042/FLAG62c2b51f0 [2020-11-30 00:00:42,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/data/167c233ef/c93a75ba840a42d3894e373e22d38042 [2020-11-30 00:00:42,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:00:42,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:00:42,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:00:42,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:00:42,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:00:42,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:00:42" (1/1) ... [2020-11-30 00:00:42,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7cc5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:42, skipping insertion in model container [2020-11-30 00:00:42,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:00:42" (1/1) ... [2020-11-30 00:00:42,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:00:42,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:00:42,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:00:42,748 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:00:42,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:00:43,104 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:00:43,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43 WrapperNode [2020-11-30 00:00:43,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:00:43,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:00:43,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:00:43,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:00:43,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... [2020-11-30 00:00:43,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... [2020-11-30 00:00:43,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:00:43,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:00:43,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:00:43,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:00:43,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... [2020-11-30 00:00:43,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... [2020-11-30 00:00:43,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... [2020-11-30 00:00:43,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... [2020-11-30 00:00:43,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... [2020-11-30 00:00:43,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... [2020-11-30 00:00:43,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... [2020-11-30 00:00:43,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:00:43,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:00:43,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:00:43,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:00:43,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/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 [2020-11-30 00:00:43,394 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-30 00:00:43,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-30 00:00:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-30 00:00:43,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-30 00:00:43,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:00:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:00:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:00:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:00:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-11-30 00:00:43,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:00:43,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:00:43,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:00:43,399 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-30 00:00:44,216 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:00:44,216 INFO L298 CfgBuilder]: Removed 30 assume(true) statements. [2020-11-30 00:00:44,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:00:44 BoogieIcfgContainer [2020-11-30 00:00:44,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:00:44,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:00:44,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:00:44,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:00:44,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:00:42" (1/3) ... [2020-11-30 00:00:44,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e4d899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:00:44, skipping insertion in model container [2020-11-30 00:00:44,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:00:43" (2/3) ... [2020-11-30 00:00:44,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e4d899 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:00:44, skipping insertion in model container [2020-11-30 00:00:44,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:00:44" (3/3) ... [2020-11-30 00:00:44,236 INFO L111 eAbstractionObserver]: Analyzing ICFG stack_longer-1.i [2020-11-30 00:00:44,250 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-30 00:00:44,250 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:00:44,256 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:00:44,257 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-30 00:00:44,321 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,322 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,322 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,322 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,323 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,323 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,323 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,323 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,325 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,326 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,326 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,326 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,327 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,327 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,327 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,327 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,328 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,328 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,328 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,328 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,328 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,329 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,329 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,329 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,330 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,330 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,330 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,330 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,331 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,332 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,332 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,332 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,332 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,333 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,333 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,334 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,334 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,334 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,334 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,335 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,335 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,335 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,335 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,336 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,337 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,337 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,337 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,337 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,338 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,338 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,338 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,338 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,338 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,339 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,339 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,339 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,339 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,339 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,340 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,340 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,340 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,340 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,341 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,341 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,342 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,342 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,343 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,343 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,343 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,344 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,344 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,344 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,346 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,347 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,347 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,347 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,348 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,348 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,348 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,348 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,349 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,349 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,350 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,350 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,351 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,351 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,351 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,351 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,351 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,351 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,352 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,352 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,352 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,353 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,354 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,357 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,358 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,358 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,358 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,358 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,359 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,359 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,365 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,367 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,367 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,368 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,368 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,369 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,369 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,369 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,370 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,370 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,370 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,370 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,370 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,371 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,371 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,371 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,371 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,371 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,372 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,372 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,372 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,372 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,372 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,373 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,373 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,373 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,373 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,373 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,374 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,374 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,374 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,374 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,375 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,375 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,375 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,375 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,375 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,376 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,376 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,378 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,379 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,379 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,379 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,379 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,379 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,380 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,380 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,380 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,380 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,380 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,383 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,384 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,384 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,384 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,384 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,384 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,385 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,385 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,385 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,385 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,385 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,386 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,386 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,386 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,397 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,397 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,397 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,398 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,398 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,401 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,401 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,401 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,401 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,402 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,403 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,403 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,403 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,403 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,403 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,404 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-30 00:00:44,415 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-11-30 00:00:44,428 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 00:00:44,467 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:00:44,467 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:00:44,467 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:00:44,468 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:00:44,468 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:00:44,468 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:00:44,468 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:00:44,468 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:00:44,505 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-30 00:00:44,510 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-30 00:00:44,514 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 159 transitions, 340 flow [2020-11-30 00:00:44,516 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 152 places, 159 transitions, 340 flow [2020-11-30 00:00:44,627 INFO L129 PetriNetUnfolder]: 13/159 cut-off events. [2020-11-30 00:00:44,627 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-11-30 00:00:44,636 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 443 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. [2020-11-30 00:00:44,647 INFO L116 LiptonReduction]: Number of co-enabled transitions 7732 [2020-11-30 00:00:47,678 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-30 00:00:48,421 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-30 00:00:48,578 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-30 00:00:49,000 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-11-30 00:00:49,344 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-30 00:00:49,493 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-30 00:00:50,706 WARN L193 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 132 [2020-11-30 00:00:51,200 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-11-30 00:00:51,247 INFO L131 LiptonReduction]: Checked pairs total: 12656 [2020-11-30 00:00:51,247 INFO L133 LiptonReduction]: Total number of compositions: 154 [2020-11-30 00:00:51,253 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 41 transitions, 104 flow [2020-11-30 00:00:51,297 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 335 states. [2020-11-30 00:00:51,299 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-11-30 00:00:51,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:00:51,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:51,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:00:51,308 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:51,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:51,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1712809205, now seen corresponding path program 1 times [2020-11-30 00:00:51,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:51,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667321740] [2020-11-30 00:00:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:51,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667321740] [2020-11-30 00:00:51,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:51,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:00:51,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454885810] [2020-11-30 00:00:51,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:00:51,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:51,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:00:51,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:00:51,620 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 3 states. [2020-11-30 00:00:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:51,748 INFO L93 Difference]: Finished difference Result 602 states and 1541 transitions. [2020-11-30 00:00:51,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:00:51,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-30 00:00:51,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:51,787 INFO L225 Difference]: With dead ends: 602 [2020-11-30 00:00:51,787 INFO L226 Difference]: Without dead ends: 580 [2020-11-30 00:00:51,789 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 [2020-11-30 00:00:51,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-11-30 00:00:51,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 427. [2020-11-30 00:00:51,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-11-30 00:00:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1148 transitions. [2020-11-30 00:00:51,932 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1148 transitions. Word has length 6 [2020-11-30 00:00:51,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:51,933 INFO L481 AbstractCegarLoop]: Abstraction has 427 states and 1148 transitions. [2020-11-30 00:00:51,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:00:51,933 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1148 transitions. [2020-11-30 00:00:51,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 00:00:51,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:51,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:51,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:00:51,935 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:51,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1187168640, now seen corresponding path program 1 times [2020-11-30 00:00:51,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:51,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329873701] [2020-11-30 00:00:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:52,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:52,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329873701] [2020-11-30 00:00:52,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:52,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:00:52,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326370486] [2020-11-30 00:00:52,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:00:52,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:52,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:00:52,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:00:52,100 INFO L87 Difference]: Start difference. First operand 427 states and 1148 transitions. Second operand 3 states. [2020-11-30 00:00:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:52,125 INFO L93 Difference]: Finished difference Result 530 states and 1370 transitions. [2020-11-30 00:00:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:00:52,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 00:00:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:52,133 INFO L225 Difference]: With dead ends: 530 [2020-11-30 00:00:52,133 INFO L226 Difference]: Without dead ends: 508 [2020-11-30 00:00:52,134 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 [2020-11-30 00:00:52,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-11-30 00:00:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 468. [2020-11-30 00:00:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-11-30 00:00:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1250 transitions. [2020-11-30 00:00:52,164 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1250 transitions. Word has length 8 [2020-11-30 00:00:52,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:52,165 INFO L481 AbstractCegarLoop]: Abstraction has 468 states and 1250 transitions. [2020-11-30 00:00:52,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:00:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1250 transitions. [2020-11-30 00:00:52,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:00:52,167 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:52,167 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:52,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:00:52,167 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:52,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:52,168 INFO L82 PathProgramCache]: Analyzing trace with hash -645541621, now seen corresponding path program 1 times [2020-11-30 00:00:52,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:52,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210152810] [2020-11-30 00:00:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:52,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:52,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210152810] [2020-11-30 00:00:52,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:52,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:00:52,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950635369] [2020-11-30 00:00:52,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:00:52,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:52,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:00:52,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:00:52,275 INFO L87 Difference]: Start difference. First operand 468 states and 1250 transitions. Second operand 3 states. [2020-11-30 00:00:52,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:52,294 INFO L93 Difference]: Finished difference Result 504 states and 1343 transitions. [2020-11-30 00:00:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:00:52,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-30 00:00:52,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:52,301 INFO L225 Difference]: With dead ends: 504 [2020-11-30 00:00:52,301 INFO L226 Difference]: Without dead ends: 504 [2020-11-30 00:00:52,302 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 [2020-11-30 00:00:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-11-30 00:00:52,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-11-30 00:00:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-11-30 00:00:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1343 transitions. [2020-11-30 00:00:52,336 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1343 transitions. Word has length 10 [2020-11-30 00:00:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:52,336 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 1343 transitions. [2020-11-30 00:00:52,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:00:52,337 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1343 transitions. [2020-11-30 00:00:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:00:52,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:52,339 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:52,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:00:52,340 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:52,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:52,340 INFO L82 PathProgramCache]: Analyzing trace with hash 285026319, now seen corresponding path program 1 times [2020-11-30 00:00:52,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:52,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040503312] [2020-11-30 00:00:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:52,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040503312] [2020-11-30 00:00:52,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571005200] [2020-11-30 00:00:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/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 [2020-11-30 00:00:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:52,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 00:00:52,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:52,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:00:52,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-30 00:00:52,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059477790] [2020-11-30 00:00:52,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:00:52,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:52,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:00:52,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:00:52,879 INFO L87 Difference]: Start difference. First operand 504 states and 1343 transitions. Second operand 7 states. [2020-11-30 00:00:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:53,077 INFO L93 Difference]: Finished difference Result 940 states and 2424 transitions. [2020-11-30 00:00:53,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:00:53,078 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-30 00:00:53,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:53,092 INFO L225 Difference]: With dead ends: 940 [2020-11-30 00:00:53,093 INFO L226 Difference]: Without dead ends: 940 [2020-11-30 00:00:53,093 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:00:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-11-30 00:00:53,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 688. [2020-11-30 00:00:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-11-30 00:00:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1842 transitions. [2020-11-30 00:00:53,136 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1842 transitions. Word has length 14 [2020-11-30 00:00:53,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:53,136 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 1842 transitions. [2020-11-30 00:00:53,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:00:53,137 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1842 transitions. [2020-11-30 00:00:53,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:00:53,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:53,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:53,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:00:53,362 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:53,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1610706921, now seen corresponding path program 1 times [2020-11-30 00:00:53,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:53,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641482793] [2020-11-30 00:00:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:53,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641482793] [2020-11-30 00:00:53,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:53,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:00:53,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692403610] [2020-11-30 00:00:53,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:00:53,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:53,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:00:53,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:00:53,469 INFO L87 Difference]: Start difference. First operand 688 states and 1842 transitions. Second operand 3 states. [2020-11-30 00:00:53,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:53,507 INFO L93 Difference]: Finished difference Result 343 states and 775 transitions. [2020-11-30 00:00:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:00:53,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 00:00:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:53,511 INFO L225 Difference]: With dead ends: 343 [2020-11-30 00:00:53,511 INFO L226 Difference]: Without dead ends: 339 [2020-11-30 00:00:53,512 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 [2020-11-30 00:00:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-11-30 00:00:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 313. [2020-11-30 00:00:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-11-30 00:00:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 700 transitions. [2020-11-30 00:00:53,529 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 700 transitions. Word has length 16 [2020-11-30 00:00:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:53,529 INFO L481 AbstractCegarLoop]: Abstraction has 313 states and 700 transitions. [2020-11-30 00:00:53,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:00:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 700 transitions. [2020-11-30 00:00:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:00:53,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:53,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:00:53,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:00:53,533 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:53,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:53,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1867326303, now seen corresponding path program 1 times [2020-11-30 00:00:53,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:53,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684008414] [2020-11-30 00:00:53,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:53,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:53,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684008414] [2020-11-30 00:00:53,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:53,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:00:53,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041976903] [2020-11-30 00:00:53,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:00:53,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:53,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:00:53,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:00:53,674 INFO L87 Difference]: Start difference. First operand 313 states and 700 transitions. Second operand 5 states. [2020-11-30 00:00:53,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:53,798 INFO L93 Difference]: Finished difference Result 473 states and 1056 transitions. [2020-11-30 00:00:53,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:00:53,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-30 00:00:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:53,804 INFO L225 Difference]: With dead ends: 473 [2020-11-30 00:00:53,804 INFO L226 Difference]: Without dead ends: 473 [2020-11-30 00:00:53,804 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 [2020-11-30 00:00:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2020-11-30 00:00:53,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 351. [2020-11-30 00:00:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-11-30 00:00:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 791 transitions. [2020-11-30 00:00:53,822 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 791 transitions. Word has length 17 [2020-11-30 00:00:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:53,822 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 791 transitions. [2020-11-30 00:00:53,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:00:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 791 transitions. [2020-11-30 00:00:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:00:53,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:53,825 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] [2020-11-30 00:00:53,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:00:53,825 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:53,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:53,826 INFO L82 PathProgramCache]: Analyzing trace with hash -411284068, now seen corresponding path program 1 times [2020-11-30 00:00:53,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:53,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997824827] [2020-11-30 00:00:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:54,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997824827] [2020-11-30 00:00:54,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:54,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:00:54,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335134784] [2020-11-30 00:00:54,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:00:54,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:54,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:00:54,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:00:54,251 INFO L87 Difference]: Start difference. First operand 351 states and 791 transitions. Second operand 8 states. [2020-11-30 00:00:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:54,694 INFO L93 Difference]: Finished difference Result 653 states and 1454 transitions. [2020-11-30 00:00:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:00:54,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-30 00:00:54,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:54,701 INFO L225 Difference]: With dead ends: 653 [2020-11-30 00:00:54,701 INFO L226 Difference]: Without dead ends: 653 [2020-11-30 00:00:54,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:00:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-11-30 00:00:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 484. [2020-11-30 00:00:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-11-30 00:00:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1129 transitions. [2020-11-30 00:00:54,727 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1129 transitions. Word has length 21 [2020-11-30 00:00:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:54,727 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 1129 transitions. [2020-11-30 00:00:54,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:00:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1129 transitions. [2020-11-30 00:00:54,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:00:54,729 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:54,729 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] [2020-11-30 00:00:54,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 00:00:54,730 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:54,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:54,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1129438590, now seen corresponding path program 2 times [2020-11-30 00:00:54,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:54,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470160204] [2020-11-30 00:00:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:55,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470160204] [2020-11-30 00:00:55,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:00:55,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-30 00:00:55,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810054009] [2020-11-30 00:00:55,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:00:55,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:55,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:00:55,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:00:55,159 INFO L87 Difference]: Start difference. First operand 484 states and 1129 transitions. Second operand 8 states. [2020-11-30 00:00:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:55,564 INFO L93 Difference]: Finished difference Result 779 states and 1769 transitions. [2020-11-30 00:00:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:00:55,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-11-30 00:00:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:55,572 INFO L225 Difference]: With dead ends: 779 [2020-11-30 00:00:55,572 INFO L226 Difference]: Without dead ends: 779 [2020-11-30 00:00:55,573 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 [2020-11-30 00:00:55,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-11-30 00:00:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 470. [2020-11-30 00:00:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2020-11-30 00:00:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1092 transitions. [2020-11-30 00:00:55,595 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1092 transitions. Word has length 21 [2020-11-30 00:00:55,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:55,597 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 1092 transitions. [2020-11-30 00:00:55,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:00:55,597 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1092 transitions. [2020-11-30 00:00:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:00:55,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:55,599 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-11-30 00:00:55,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 00:00:55,599 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:55,600 INFO L82 PathProgramCache]: Analyzing trace with hash 910586131, now seen corresponding path program 2 times [2020-11-30 00:00:55,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:55,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099887164] [2020-11-30 00:00:55,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:55,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099887164] [2020-11-30 00:00:55,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169674790] [2020-11-30 00:00:55,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/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 [2020-11-30 00:00:55,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:00:55,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:00:55,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:00:55,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:55,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 00:00:55,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-30 00:00:55,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626982884] [2020-11-30 00:00:55,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:00:55,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:55,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:00:55,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:00:55,909 INFO L87 Difference]: Start difference. First operand 470 states and 1092 transitions. Second operand 9 states. [2020-11-30 00:00:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:56,047 INFO L93 Difference]: Finished difference Result 778 states and 1761 transitions. [2020-11-30 00:00:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:00:56,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-11-30 00:00:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:56,055 INFO L225 Difference]: With dead ends: 778 [2020-11-30 00:00:56,055 INFO L226 Difference]: Without dead ends: 778 [2020-11-30 00:00:56,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:00:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2020-11-30 00:00:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 560. [2020-11-30 00:00:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-11-30 00:00:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1291 transitions. [2020-11-30 00:00:56,080 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1291 transitions. Word has length 22 [2020-11-30 00:00:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:56,080 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 1291 transitions. [2020-11-30 00:00:56,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:00:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1291 transitions. [2020-11-30 00:00:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:00:56,082 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:56,082 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] [2020-11-30 00:00:56,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:00:56,289 INFO L429 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:56,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:56,289 INFO L82 PathProgramCache]: Analyzing trace with hash 979235810, now seen corresponding path program 1 times [2020-11-30 00:00:56,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:56,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977935112] [2020-11-30 00:00:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:00:56,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977935112] [2020-11-30 00:00:56,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902773077] [2020-11-30 00:00:56,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/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 [2020-11-30 00:00:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:00:56,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:00:56,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:00:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:00:56,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:00:56,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2020-11-30 00:00:56,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432208949] [2020-11-30 00:00:56,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:00:56,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:00:56,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:00:56,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:00:56,597 INFO L87 Difference]: Start difference. First operand 560 states and 1291 transitions. Second operand 6 states. [2020-11-30 00:00:56,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:56,733 INFO L93 Difference]: Finished difference Result 775 states and 1744 transitions. [2020-11-30 00:00:56,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:00:56,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-30 00:00:56,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:56,742 INFO L225 Difference]: With dead ends: 775 [2020-11-30 00:00:56,742 INFO L226 Difference]: Without dead ends: 775 [2020-11-30 00:00:56,743 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 [2020-11-30 00:00:56,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-11-30 00:00:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 586. [2020-11-30 00:00:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-11-30 00:00:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1362 transitions. [2020-11-30 00:00:56,770 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1362 transitions. Word has length 24 [2020-11-30 00:00:56,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:56,770 INFO L481 AbstractCegarLoop]: Abstraction has 586 states and 1362 transitions. [2020-11-30 00:00:56,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:00:56,770 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1362 transitions. [2020-11-30 00:00:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:00:56,772 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:00:56,772 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] [2020-11-30 00:00:56,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-30 00:00:56,992 INFO L429 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION, t1Err0ASSERT_VIOLATIONERROR_FUNCTION, t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:00:56,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:00:56,992 INFO L82 PathProgramCache]: Analyzing trace with hash 979237801, now seen corresponding path program 1 times [2020-11-30 00:00:56,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:00:56,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626958271] [2020-11-30 00:00:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:00:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:00:57,030 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:00:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:00:57,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:00:57,114 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:00:57,114 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:00:57,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 00:00:57,115 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-30 00:00:57,116 WARN L264 etLargeBlockEncoding]: Failed to translate choice composition: Branch encoders not available. [2020-11-30 00:00:57,127 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [623] [623] L994-->L958: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-615588137 4294967296))) (and (< .cse0 400) (= .cse0 |t1Thread1of1ForFork0_push_#in~x_Out-615588137|) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-615588137 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-615588137|) (= |t1Thread1of1ForFork0_push_#in~stack.offset_Out-615588137| |~#arr~0.offset_In-615588137|) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-615588137| 1) (= |~#arr~0.base_In-615588137| |t1Thread1of1ForFork0_push_#in~stack.base_Out-615588137|))) InVars {~#arr~0.offset=|~#arr~0.offset_In-615588137|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-615588137, ~#arr~0.base=|~#arr~0.base_In-615588137|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-615588137|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-615588137|, t1Thread1of1ForFork0_push_#t~nondet36=|t1Thread1of1ForFork0_push_#t~nondet36_Out-615588137|, t1Thread1of1ForFork0_push_~stack.offset=t1Thread1of1ForFork0_push_~stack.offset_Out-615588137, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-615588137|, t1Thread1of1ForFork0_push_#t~ret38=|t1Thread1of1ForFork0_push_#t~ret38_Out-615588137|, t1Thread1of1ForFork0_push_~stack.base=t1Thread1of1ForFork0_push_~stack.base_Out-615588137, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-615588137, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-615588137|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-615588137, t1Thread1of1ForFork0_push_~x=t1Thread1of1ForFork0_push_~x_Out-615588137, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-615588137|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-615588137|, ~#arr~0.base=|~#arr~0.base_In-615588137|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_push_~stack.base, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_push_~x, t1Thread1of1ForFork0_push_#t~nondet36, t1Thread1of1ForFork0_push_~stack.offset, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset, t1Thread1of1ForFork0_push_#t~ret38] because there is no mapped edge [2020-11-30 00:00:57,142 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [641] [641] L1010-3-->L1005-6: Formula: (and (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In1265946365| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out1265946365|) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In1265946365|)) (= t2Thread1of1ForFork1_~i~1_Out1265946365 (+ t2Thread1of1ForFork1_~i~1_In1265946365 1)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In1265946365| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out1265946365|) (= |#pthreadsMutex_Out1265946365| (store |#pthreadsMutex_In1265946365| |~#m~0.base_In1265946365| (store (select |#pthreadsMutex_In1265946365| |~#m~0.base_In1265946365|) |~#m~0.offset_In1265946365| 0))) (<= 0 (+ |t2Thread1of1ForFork1_#t~ret50_In1265946365| 2147483648)) (<= |t2Thread1of1ForFork1_#t~ret50_In1265946365| 2147483647)) InVars {#pthreadsMutex=|#pthreadsMutex_In1265946365|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In1265946365|, ~#m~0.base=|~#m~0.base_In1265946365|, ~#m~0.offset=|~#m~0.offset_In1265946365|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In1265946365|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In1265946365, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In1265946365|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out1265946365|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out1265946365|, ~#m~0.base=|~#m~0.base_In1265946365|, ~#m~0.offset=|~#m~0.offset_In1265946365|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out1265946365|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out1265946365|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out1265946365, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out1265946365|} 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 [2020-11-30 00:00:57,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:00:57 BasicIcfg [2020-11-30 00:00:57,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:00:57,224 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:00:57,224 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:00:57,224 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:00:57,225 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:00:44" (3/4) ... [2020-11-30 00:00:57,228 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:00:57,236 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [623] [623] L994-->L958: Formula: (let ((.cse0 (mod t1Thread1of1ForFork0_~tmp~0_In-615588137 4294967296))) (and (< .cse0 400) (= .cse0 |t1Thread1of1ForFork0_push_#in~x_Out-615588137|) (= t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-615588137 |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-615588137|) (= |t1Thread1of1ForFork0_push_#in~stack.offset_Out-615588137| |~#arr~0.offset_In-615588137|) (= |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-615588137| 1) (= |~#arr~0.base_In-615588137| |t1Thread1of1ForFork0_push_#in~stack.base_Out-615588137|))) InVars {~#arr~0.offset=|~#arr~0.offset_In-615588137|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-615588137, ~#arr~0.base=|~#arr~0.base_In-615588137|} OutVars{~#arr~0.offset=|~#arr~0.offset_In-615588137|, t1Thread1of1ForFork0_push_#in~x=|t1Thread1of1ForFork0_push_#in~x_Out-615588137|, t1Thread1of1ForFork0_push_#t~nondet36=|t1Thread1of1ForFork0_push_#t~nondet36_Out-615588137|, t1Thread1of1ForFork0_push_~stack.offset=t1Thread1of1ForFork0_push_~stack.offset_Out-615588137, t1Thread1of1ForFork0_push_#res=|t1Thread1of1ForFork0_push_#res_Out-615588137|, t1Thread1of1ForFork0_push_#t~ret38=|t1Thread1of1ForFork0_push_#t~ret38_Out-615588137|, t1Thread1of1ForFork0_push_~stack.base=t1Thread1of1ForFork0_push_~stack.base_Out-615588137, t1Thread1of1ForFork0_assume_abort_if_not_~cond=t1Thread1of1ForFork0_assume_abort_if_not_~cond_Out-615588137, t1Thread1of1ForFork0_push_#in~stack.base=|t1Thread1of1ForFork0_push_#in~stack.base_Out-615588137|, t1Thread1of1ForFork0_~tmp~0=t1Thread1of1ForFork0_~tmp~0_In-615588137, t1Thread1of1ForFork0_push_~x=t1Thread1of1ForFork0_push_~x_Out-615588137, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond=|t1Thread1of1ForFork0_assume_abort_if_not_#in~cond_Out-615588137|, t1Thread1of1ForFork0_push_#in~stack.offset=|t1Thread1of1ForFork0_push_#in~stack.offset_Out-615588137|, ~#arr~0.base=|~#arr~0.base_In-615588137|} AuxVars[] AssignedVars[t1Thread1of1ForFork0_push_#in~x, t1Thread1of1ForFork0_push_~stack.base, t1Thread1of1ForFork0_assume_abort_if_not_~cond, t1Thread1of1ForFork0_push_#in~stack.base, t1Thread1of1ForFork0_push_~x, t1Thread1of1ForFork0_push_#t~nondet36, t1Thread1of1ForFork0_push_~stack.offset, t1Thread1of1ForFork0_push_#res, t1Thread1of1ForFork0_assume_abort_if_not_#in~cond, t1Thread1of1ForFork0_push_#in~stack.offset, t1Thread1of1ForFork0_push_#t~ret38] because there is no mapped edge [2020-11-30 00:00:57,248 WARN L124 codingBacktranslator]: Skipped backtranslation of ATE [641] [641] L1010-3-->L1005-6: Formula: (and (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In1265946365| |t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out1265946365|) (not (= (- 2) |t2Thread1of1ForFork1_#t~ret50_In1265946365|)) (= t2Thread1of1ForFork1_~i~1_Out1265946365 (+ t2Thread1of1ForFork1_~i~1_In1265946365 1)) (= |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In1265946365| |t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out1265946365|) (= |#pthreadsMutex_Out1265946365| (store |#pthreadsMutex_In1265946365| |~#m~0.base_In1265946365| (store (select |#pthreadsMutex_In1265946365| |~#m~0.base_In1265946365|) |~#m~0.offset_In1265946365| 0))) (<= 0 (+ |t2Thread1of1ForFork1_#t~ret50_In1265946365| 2147483648)) (<= |t2Thread1of1ForFork1_#t~ret50_In1265946365| 2147483647)) InVars {#pthreadsMutex=|#pthreadsMutex_In1265946365|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_In1265946365|, ~#m~0.base=|~#m~0.base_In1265946365|, ~#m~0.offset=|~#m~0.offset_In1265946365|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_In1265946365|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_In1265946365, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_In1265946365|} OutVars{#pthreadsMutex=|#pthreadsMutex_Out1265946365|, t2Thread1of1ForFork1_reach_error_#t~nondet2.base=|t2Thread1of1ForFork1_reach_error_#t~nondet2.base_Out1265946365|, ~#m~0.base=|~#m~0.base_In1265946365|, ~#m~0.offset=|~#m~0.offset_In1265946365|, t2Thread1of1ForFork1_#t~post48=|t2Thread1of1ForFork1_#t~post48_Out1265946365|, t2Thread1of1ForFork1_#t~ret50=|t2Thread1of1ForFork1_#t~ret50_Out1265946365|, t2Thread1of1ForFork1_~i~1=t2Thread1of1ForFork1_~i~1_Out1265946365, t2Thread1of1ForFork1_reach_error_#t~nondet2.offset=|t2Thread1of1ForFork1_reach_error_#t~nondet2.offset_Out1265946365|} 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 [2020-11-30 00:00:57,345 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_73d7f4fe-51f0-473c-ab4a-b7ea15c7ccbc/bin/uautomizer/witness.graphml [2020-11-30 00:00:57,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:00:57,361 INFO L168 Benchmark]: Toolchain (without parser) took 15300.10 ms. Allocated memory was 81.8 MB in the beginning and 174.1 MB in the end (delta: 92.3 MB). Free memory was 43.8 MB in the beginning and 71.1 MB in the end (delta: -27.3 MB). Peak memory consumption was 65.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:57,362 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 81.8 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:00:57,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1044.92 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.6 MB in the beginning and 54.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:57,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 115.93 ms. Allocated memory is still 98.6 MB. Free memory was 54.8 MB in the beginning and 52.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:57,364 INFO L168 Benchmark]: Boogie Preprocessor took 76.70 ms. Allocated memory is still 98.6 MB. Free memory was 52.1 MB in the beginning and 50.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:00:57,364 INFO L168 Benchmark]: RCFGBuilder took 915.26 ms. Allocated memory is still 98.6 MB. Free memory was 50.6 MB in the beginning and 53.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:57,365 INFO L168 Benchmark]: TraceAbstraction took 12996.22 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 53.3 MB in the beginning and 81.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:57,365 INFO L168 Benchmark]: Witness Printer took 135.88 ms. Allocated memory is still 174.1 MB. Free memory was 81.6 MB in the beginning and 71.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:00:57,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 81.8 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1044.92 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 43.6 MB in the beginning and 54.8 MB in the end (delta: -11.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 115.93 ms. Allocated memory is still 98.6 MB. Free memory was 54.8 MB in the beginning and 52.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.70 ms. Allocated memory is still 98.6 MB. Free memory was 52.1 MB in the beginning and 50.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 915.26 ms. Allocated memory is still 98.6 MB. Free memory was 50.6 MB in the beginning and 53.9 MB in the end (delta: -3.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12996.22 ms. Allocated memory was 98.6 MB in the beginning and 174.1 MB in the end (delta: 75.5 MB). Free memory was 53.3 MB in the beginning and 81.6 MB in the end (delta: -28.3 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. * Witness Printer took 135.88 ms. Allocated memory is still 174.1 MB. Free memory was 81.6 MB in the beginning and 71.1 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 5451 VarBasedMoverChecksPositive, 106 VarBasedMoverChecksNegative, 42 SemBasedMoverChecksPositive, 64 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.8s, 289 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 6.7s, 152 PlacesBefore, 40 PlacesAfterwards, 159 TransitionsBefore, 41 TransitionsAfterwards, 7732 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 94 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 24 ConcurrentYvCompositions, 6 ChoiceCompositions, 154 TotalNumberOfCompositions, 12656 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[(400)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1019] 0 pthread_t id1, id2; [L1021] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L1022] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L988] 1 int i; [L989] 1 unsigned int tmp; [L990] 1 i=0 VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L990] COND TRUE 1 i<(400) [L993] 1 tmp = __VERIFIER_nondet_uint() [L960] COND FALSE 1 !(top==(400)) [L952] 1 return top; [L967] 1 stack[get_top()] = x VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L1004] 2 int i; [L1005] 2 i=0 VAL [arr={11:0}, flag=0, m={6:0}, top=0] [L944] 1 top++ [L970] 1 return 0; [L995] COND FALSE 1 !(push(arr,tmp)==(-1)) [L997] 1 flag=(1) VAL [arr={11:0}, flag=1, m={6:0}, top=1] [L990] 1 i++ VAL [arr={11:0}, flag=1, m={6:0}, top=1] [L1005] COND TRUE 2 i<(400) [L1008] COND TRUE 2 \read(flag) [L952] 2 return top; VAL [arr={11:0}, flag=1, m={6:0}, top=1] [L974] COND FALSE 2 !(get_top()==0) [L948] 2 top-- VAL [arr={11:0}, flag=1, m={6:0}, top=0] [L952] 2 return top; [L982] EXPR 2 stack[get_top()] [L982] 2 return stack[get_top()]; [L1005] COND TRUE 2 i<(400) [L1008] COND TRUE 2 \read(flag) [L952] 2 return top; [L974] COND TRUE 2 get_top()==0 [L977] 2 return (-2); [L1010] COND TRUE 2 !(pop(arr)!=(-2)) [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack_longer-1.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arr={11:0}, flag=1, m={6:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 146 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.6s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.8s, HoareTripleCheckerStatistics: 447 SDtfs, 551 SDslu, 966 SDs, 0 SdLazy, 491 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.0s 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, 1.6s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 206 ConstructedInterpolants, 0 QuantifiedInterpolants, 30714 SizeOfPredicates, 8 NumberOfNonLiveVariables, 578 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...