/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 18:54:21,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 18:54:21,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 18:54:21,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 18:54:21,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 18:54:21,491 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 18:54:21,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 18:54:21,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 18:54:21,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 18:54:21,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 18:54:21,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 18:54:21,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 18:54:21,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 18:54:21,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 18:54:21,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 18:54:21,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 18:54:21,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 18:54:21,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 18:54:21,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 18:54:21,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 18:54:21,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 18:54:21,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 18:54:21,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 18:54:21,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 18:54:21,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-11 18:54:21,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-11 18:54:21,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-11 18:54:21,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-11 18:54:21,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-11 18:54:21,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-11 18:54:21,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 18:54:21,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 18:54:21,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 18:54:21,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 18:54:21,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 18:54:21,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 18:54:21,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 18:54:21,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 18:54:21,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 18:54:21,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 18:54:21,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 18:54:21,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-03-11 18:54:21,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 18:54:21,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 18:54:21,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 18:54:21,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 18:54:21,577 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 18:54:21,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 18:54:21,577 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 18:54:21,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 18:54:21,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 18:54:21,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 18:54:21,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 18:54:21,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 18:54:21,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 18:54:21,579 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 18:54:21,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 18:54:21,579 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 18:54:21,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 18:54:21,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 18:54:21,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 18:54:21,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 18:54:21,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 18:54:21,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 18:54:21,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 18:54:21,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 18:54:21,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 18:54:21,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 18:54:21,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 18:54:21,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 18:54:21,581 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 18:54:21,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 18:54:21,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 18:54:21,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 18:54:21,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 18:54:21,893 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 18:54:21,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2021-03-11 18:54:21,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a1e6167/23fe672ee9db47dcab8a21f7f410e07a/FLAGe9f0a6f35 [2021-03-11 18:54:22,482 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 18:54:22,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2021-03-11 18:54:22,503 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a1e6167/23fe672ee9db47dcab8a21f7f410e07a/FLAGe9f0a6f35 [2021-03-11 18:54:22,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a1e6167/23fe672ee9db47dcab8a21f7f410e07a [2021-03-11 18:54:22,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 18:54:22,948 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 18:54:22,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 18:54:22,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 18:54:22,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 18:54:22,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 06:54:22" (1/1) ... [2021-03-11 18:54:22,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625d4dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:22, skipping insertion in model container [2021-03-11 18:54:22,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 06:54:22" (1/1) ... [2021-03-11 18:54:22,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 18:54:22,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 18:54:23,291 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2021-03-11 18:54:23,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 18:54:23,309 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 18:54:23,355 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2021-03-11 18:54:23,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 18:54:23,423 INFO L208 MainTranslator]: Completed translation [2021-03-11 18:54:23,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23 WrapperNode [2021-03-11 18:54:23,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 18:54:23,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 18:54:23,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 18:54:23,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 18:54:23,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... [2021-03-11 18:54:23,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... [2021-03-11 18:54:23,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 18:54:23,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 18:54:23,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 18:54:23,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 18:54:23,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... [2021-03-11 18:54:23,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... [2021-03-11 18:54:23,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... [2021-03-11 18:54:23,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... [2021-03-11 18:54:23,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... [2021-03-11 18:54:23,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... [2021-03-11 18:54:23,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... [2021-03-11 18:54:23,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 18:54:23,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 18:54:23,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 18:54:23,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 18:54:23,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2021-03-11 18:54:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 18:54:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 18:54:23,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 18:54:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 18:54:23,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 18:54:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 18:54:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-11 18:54:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 18:54:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 18:54:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 18:54:23,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 18:54:23,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 18:54:23,550 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 18:54:23,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 18:54:23,903 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 18:54:23,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:54:23 BoogieIcfgContainer [2021-03-11 18:54:23,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 18:54:23,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 18:54:23,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 18:54:23,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 18:54:23,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 06:54:22" (1/3) ... [2021-03-11 18:54:23,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7484a0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:54:23, skipping insertion in model container [2021-03-11 18:54:23,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 06:54:23" (2/3) ... [2021-03-11 18:54:23,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7484a0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 06:54:23, skipping insertion in model container [2021-03-11 18:54:23,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 06:54:23" (3/3) ... [2021-03-11 18:54:23,912 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2021-03-11 18:54:23,917 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 18:54:23,920 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 18:54:23,921 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 18:54:23,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,953 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,953 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,954 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,954 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,954 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,954 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,955 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,955 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,955 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,955 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,955 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,955 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,956 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,956 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,956 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,956 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,957 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,958 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,958 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,959 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,959 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,962 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,962 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,964 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,964 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,964 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,964 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,964 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,965 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,965 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,965 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,965 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,966 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,966 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,967 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,967 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,967 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,968 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,969 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,969 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,969 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,970 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,970 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,972 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,973 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,973 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,973 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,973 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,973 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,973 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,973 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,980 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,980 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,980 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,981 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,981 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,981 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 18:54:23,988 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 18:54:24,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 18:54:24,033 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 18:54:24,034 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 18:54:24,034 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 18:54:24,034 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 18:54:24,034 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 18:54:24,034 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 18:54:24,034 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 18:54:24,034 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 18:54:24,046 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 188 flow [2021-03-11 18:54:24,100 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-03-11 18:54:24,101 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 18:54:24,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 83 events. 2/83 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2021-03-11 18:54:24,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 188 flow [2021-03-11 18:54:24,118 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 71 transitions, 160 flow [2021-03-11 18:54:24,121 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 18:54:24,128 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 71 transitions, 160 flow [2021-03-11 18:54:24,131 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 71 transitions, 160 flow [2021-03-11 18:54:24,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 71 transitions, 160 flow [2021-03-11 18:54:24,163 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-03-11 18:54:24,164 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 18:54:24,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 73 events. 1/73 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 19. Up to 3 conditions per place. [2021-03-11 18:54:24,166 INFO L116 LiptonReduction]: Number of co-enabled transitions 680 [2021-03-11 18:54:26,796 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2021-03-11 18:54:26,899 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-03-11 18:54:27,099 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2021-03-11 18:54:27,588 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2021-03-11 18:54:27,786 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-03-11 18:54:28,149 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2021-03-11 18:54:28,313 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-03-11 18:54:28,318 INFO L131 LiptonReduction]: Checked pairs total: 3637 [2021-03-11 18:54:28,318 INFO L133 LiptonReduction]: Total number of compositions: 44 [2021-03-11 18:54:28,319 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 4201 [2021-03-11 18:54:28,328 INFO L129 PetriNetUnfolder]: 1/28 cut-off events. [2021-03-11 18:54:28,328 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 18:54:28,328 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:54:28,329 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 18:54:28,329 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:54:28,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:54:28,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1012374334, now seen corresponding path program 1 times [2021-03-11 18:54:28,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:54:28,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771998451] [2021-03-11 18:54:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:54:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 18:54:28,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:28,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 18:54:28,582 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:28,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 18:54:28,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:28,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 18:54:28,597 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:28,598 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 18:54:28,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 18:54:28,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 18:54:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 18:54:28,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771998451] [2021-03-11 18:54:28,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 18:54:28,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 18:54:28,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856260130] [2021-03-11 18:54:28,612 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 18:54:28,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 18:54:28,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 18:54:28,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 18:54:28,627 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 127 [2021-03-11 18:54:28,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 72 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:28,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 18:54:28,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 127 [2021-03-11 18:54:28,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 18:54:28,678 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-03-11 18:54:28,679 INFO L130 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2021-03-11 18:54:28,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 28 events. 0/28 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 2/30 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-11 18:54:28,680 INFO L132 encePairwiseOnDemand]: 122/127 looper letters, 4 selfloop transitions, 4 changer transitions 1/26 dead transitions. [2021-03-11 18:54:28,680 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 83 flow [2021-03-11 18:54:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 18:54:28,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 18:54:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2021-03-11 18:54:28,699 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.6047244094488189 [2021-03-11 18:54:28,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2021-03-11 18:54:28,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2021-03-11 18:54:28,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 18:54:28,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2021-03-11 18:54:28,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:28,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:28,717 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:28,718 INFO L185 Difference]: Start difference. First operand has 32 places, 27 transitions, 72 flow. Second operand 5 states and 384 transitions. [2021-03-11 18:54:28,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 83 flow [2021-03-11 18:54:28,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 73 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 18:54:28,723 INFO L241 Difference]: Finished difference. Result has 32 places, 25 transitions, 62 flow [2021-03-11 18:54:28,725 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=127, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2021-03-11 18:54:28,726 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-11 18:54:28,726 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 62 flow [2021-03-11 18:54:28,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 18:54:28,726 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 18:54:28,726 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 18:54:28,727 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 18:54:28,727 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 18:54:28,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 18:54:28,728 INFO L82 PathProgramCache]: Analyzing trace with hash 177009290, now seen corresponding path program 1 times [2021-03-11 18:54:28,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 18:54:28,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444719369] [2021-03-11 18:54:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 18:54:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 18:54:28,794 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 18:54:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 18:54:28,841 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 18:54:28,876 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 18:54:28,877 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 18:54:28,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 18:54:28,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 06:54:28 BasicIcfg [2021-03-11 18:54:28,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 18:54:28,941 INFO L168 Benchmark]: Toolchain (without parser) took 5995.31 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 328.5 MB in the beginning and 283.3 MB in the end (delta: 45.2 MB). Peak memory consumption was 120.1 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:28,941 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 364.9 MB. Free memory is still 346.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 18:54:28,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.81 ms. Allocated memory is still 364.9 MB. Free memory was 327.9 MB in the beginning and 328.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:28,942 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.32 ms. Allocated memory is still 364.9 MB. Free memory was 328.9 MB in the beginning and 326.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:28,942 INFO L168 Benchmark]: Boogie Preprocessor took 20.13 ms. Allocated memory is still 364.9 MB. Free memory was 326.8 MB in the beginning and 325.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:28,943 INFO L168 Benchmark]: RCFGBuilder took 410.81 ms. Allocated memory is still 364.9 MB. Free memory was 325.2 MB in the beginning and 299.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:28,943 INFO L168 Benchmark]: TraceAbstraction took 5032.83 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 299.6 MB in the beginning and 284.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 91.8 MB. Max. memory is 16.0 GB. [2021-03-11 18:54:28,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 364.9 MB. Free memory is still 346.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 474.81 ms. Allocated memory is still 364.9 MB. Free memory was 327.9 MB in the beginning and 328.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 48.32 ms. Allocated memory is still 364.9 MB. Free memory was 328.9 MB in the beginning and 326.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 20.13 ms. Allocated memory is still 364.9 MB. Free memory was 326.8 MB in the beginning and 325.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 410.81 ms. Allocated memory is still 364.9 MB. Free memory was 325.2 MB in the beginning and 299.6 MB in the end (delta: 25.6 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5032.83 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 299.6 MB in the beginning and 284.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 91.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4187.3ms, 76 PlacesBefore, 32 PlacesAfterwards, 71 TransitionsBefore, 27 TransitionsAfterwards, 680 CoEnabledTransitionPairs, 7 FixpointIterations, 30 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 44 TotalNumberOfCompositions, 3637 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2123, positive: 1921, positive conditional: 0, positive unconditional: 1921, negative: 202, negative conditional: 0, negative unconditional: 202, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 518, positive: 480, positive conditional: 0, positive unconditional: 480, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 518, positive: 466, positive conditional: 0, positive unconditional: 466, negative: 52, negative conditional: 0, negative unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 52, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 171, positive: 43, positive conditional: 0, positive unconditional: 43, negative: 129, negative conditional: 0, negative unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2123, positive: 1441, positive conditional: 0, positive unconditional: 1441, negative: 164, negative conditional: 0, negative unconditional: 164, unknown: 518, unknown conditional: 0, unknown unconditional: 518] , Statistics on independence cache: Total cache size (in pairs): 178, Positive cache size: 156, Positive conditional cache size: 0, Positive unconditional cache size: 156, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={5:0}, mb={6:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data1=10, data2=10, ma={5:0}, mb={6:0}] [L723] 0 \read(t1) VAL [arg={0:0}, arg={0:0}, data1=10, data2=10, ma={5:0}, mb={6:0}] [L697] 1 data1++ [L700] 1 data2++ [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={5:0}, mb={6:0}] [L724] 0 \read(t2) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={5:0}, mb={6:0}] [L707] 2 data1+=5 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={5:0}, mb={6:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={5:0}, mb={6:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={5:0}, mb={6:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={5:0}, mb={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 4848.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 105.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4288.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 11 SDslu, 2 SDs, 0 SdLazy, 11 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.6ms SsaConstructionTime, 81.5ms SatisfiabilityAnalysisTime, 167.4ms InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...