/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-RepeatedVariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/lazy01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 03:01:38,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 03:01:38,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 03:01:38,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 03:01:38,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 03:01:38,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 03:01:38,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 03:01:38,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 03:01:38,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 03:01:38,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 03:01:38,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 03:01:38,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 03:01:38,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 03:01:38,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 03:01:38,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 03:01:38,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 03:01:38,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 03:01:38,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 03:01:38,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 03:01:38,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 03:01:38,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 03:01:38,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 03:01:38,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 03:01:38,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 03:01:38,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-25 03:01:38,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-25 03:01:38,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-25 03:01:38,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-25 03:01:38,914 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-25 03:01:38,915 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-25 03:01:38,915 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 03:01:38,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 03:01:38,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 03:01:38,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 03:01:38,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 03:01:38,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 03:01:38,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 03:01:38,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 03:01:38,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 03:01:38,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 03:01:38,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 03:01:38,920 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-RepeatedVariableLbe.epf [2021-03-25 03:01:38,941 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 03:01:38,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 03:01:38,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 03:01:38,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 03:01:38,943 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 03:01:38,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 03:01:38,943 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 03:01:38,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 03:01:38,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 03:01:38,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 03:01:38,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 03:01:38,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 03:01:38,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 03:01:38,948 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 03:01:38,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 03:01:38,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 03:01:38,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 03:01:38,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 03:01:38,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 03:01:38,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 03:01:38,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 03:01:38,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 03:01:38,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 03:01:38,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 03:01:38,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 03:01:38,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 03:01:38,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 03:01:38,950 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-25 03:01:38,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 03:01:38,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 03:01:38,950 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 03:01:39,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 03:01:39,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 03:01:39,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 03:01:39,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 03:01:39,271 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 03:01:39,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/lazy01.i [2021-03-25 03:01:39,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9072cba6/854f5d3f843c4617b867a8f86d7a930e/FLAGdb39035da [2021-03-25 03:01:39,724 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 03:01:39,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/lazy01.i [2021-03-25 03:01:39,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9072cba6/854f5d3f843c4617b867a8f86d7a930e/FLAGdb39035da [2021-03-25 03:01:40,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9072cba6/854f5d3f843c4617b867a8f86d7a930e [2021-03-25 03:01:40,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 03:01:40,058 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 03:01:40,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 03:01:40,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 03:01:40,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 03:01:40,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164d39f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40, skipping insertion in model container [2021-03-25 03:01:40,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 03:01:40,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 03:01:40,356 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/lazy01.i[31042,31055] [2021-03-25 03:01:40,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 03:01:40,374 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 03:01:40,418 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/lazy01.i[31042,31055] [2021-03-25 03:01:40,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 03:01:40,494 INFO L208 MainTranslator]: Completed translation [2021-03-25 03:01:40,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40 WrapperNode [2021-03-25 03:01:40,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 03:01:40,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 03:01:40,498 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 03:01:40,498 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 03:01:40,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 03:01:40,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 03:01:40,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 03:01:40,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 03:01:40,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (1/1) ... [2021-03-25 03:01:40,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 03:01:40,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 03:01:40,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 03:01:40,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 03:01:40,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (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 [2021-03-25 03:01:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 03:01:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-25 03:01:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-25 03:01:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-25 03:01:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-25 03:01:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-03-25 03:01:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-03-25 03:01:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 03:01:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-25 03:01:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 03:01:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 03:01:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 03:01:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 03:01:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 03:01:40,662 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 03:01:41,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 03:01:41,083 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 03:01:41,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:01:41 BoogieIcfgContainer [2021-03-25 03:01:41,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 03:01:41,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 03:01:41,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 03:01:41,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 03:01:41,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 03:01:40" (1/3) ... [2021-03-25 03:01:41,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfbdf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:01:41, skipping insertion in model container [2021-03-25 03:01:41,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 03:01:40" (2/3) ... [2021-03-25 03:01:41,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfbdf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 03:01:41, skipping insertion in model container [2021-03-25 03:01:41,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 03:01:41" (3/3) ... [2021-03-25 03:01:41,096 INFO L111 eAbstractionObserver]: Analyzing ICFG lazy01.i [2021-03-25 03:01:41,101 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 03:01:41,109 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 03:01:41,109 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 03:01:41,137 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,137 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,137 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,137 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,138 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,138 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,138 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,139 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,140 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,141 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,141 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,141 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,141 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,141 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,141 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,142 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,142 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,142 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,142 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,142 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,143 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,143 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,143 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,143 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,143 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,144 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,144 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,144 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,144 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,144 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,144 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,145 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,145 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,145 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,145 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,145 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,145 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,145 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,146 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,146 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,146 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,146 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,146 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,148 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,149 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,149 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,149 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,153 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,153 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,154 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,154 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,154 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,156 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,156 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,156 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,156 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,156 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 03:01:41,165 INFO L149 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2021-03-25 03:01:41,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-03-25 03:01:41,200 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 03:01:41,201 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 03:01:41,201 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 03:01:41,201 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 03:01:41,201 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 03:01:41,201 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 03:01:41,201 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 03:01:41,201 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 03:01:41,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 83 transitions, 208 flow [2021-03-25 03:01:41,255 INFO L129 PetriNetUnfolder]: 6/91 cut-off events. [2021-03-25 03:01:41,255 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-25 03:01:41,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 91 events. 6/91 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 133 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 6 conditions per place. [2021-03-25 03:01:41,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 83 transitions, 208 flow [2021-03-25 03:01:41,263 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 151 flow [2021-03-25 03:01:41,264 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:01:41,271 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-25 03:01:41,274 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 65 transitions, 151 flow [2021-03-25 03:01:41,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 72 places, 65 transitions, 151 flow [2021-03-25 03:01:41,294 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2021-03-25 03:01:41,294 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 03:01:41,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 67 events. 2/67 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2021-03-25 03:01:41,298 INFO L142 LiptonReduction]: Number of co-enabled transitions 1008 [2021-03-25 03:01:42,560 INFO L154 LiptonReduction]: Checked pairs total: 1293 [2021-03-25 03:01:42,560 INFO L156 LiptonReduction]: Total number of compositions: 40 [2021-03-25 03:01:42,562 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1299 [2021-03-25 03:01:42,584 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-03-25 03:01:42,585 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 03:01:42,585 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 03:01:42,586 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 03:01:42,586 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 03:01:42,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 03:01:42,593 INFO L82 PathProgramCache]: Analyzing trace with hash -240498527, now seen corresponding path program 1 times [2021-03-25 03:01:42,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 03:01:42,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849137328] [2021-03-25 03:01:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 03:01:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 03:01:42,780 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:42,781 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:01:42,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:42,782 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 03:01:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 03:01:42,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849137328] [2021-03-25 03:01:42,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 03:01:42,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 03:01:42,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885799633] [2021-03-25 03:01:42,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 03:01:42,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 03:01:42,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 03:01:42,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 03:01:42,813 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 123 [2021-03-25 03:01:42,817 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2021-03-25 03:01:42,817 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 03:01:42,817 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 123 [2021-03-25 03:01:42,818 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 03:01:42,863 INFO L129 PetriNetUnfolder]: 15/72 cut-off events. [2021-03-25 03:01:42,863 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-25 03:01:42,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 72 events. 15/72 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 248 event pairs, 3 based on Foata normal form. 4/69 useless extension candidates. Maximal degree in co-relation 101. Up to 24 conditions per place. [2021-03-25 03:01:42,866 INFO L132 encePairwiseOnDemand]: 118/123 looper letters, 6 selfloop transitions, 3 changer transitions 2/32 dead transitions. [2021-03-25 03:01:42,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 105 flow [2021-03-25 03:01:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 03:01:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 03:01:42,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2021-03-25 03:01:42,882 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8726287262872628 [2021-03-25 03:01:42,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2021-03-25 03:01:42,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2021-03-25 03:01:42,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 03:01:42,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2021-03-25 03:01:42,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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) [2021-03-25 03:01:42,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-25 03:01:42,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 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) [2021-03-25 03:01:42,904 INFO L185 Difference]: Start difference. First operand has 37 places, 30 transitions, 81 flow. Second operand 3 states and 322 transitions. [2021-03-25 03:01:42,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 105 flow [2021-03-25 03:01:42,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 92 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-03-25 03:01:42,908 INFO L241 Difference]: Finished difference. Result has 34 places, 29 transitions, 81 flow [2021-03-25 03:01:42,910 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2021-03-25 03:01:42,911 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -3 predicate places. [2021-03-25 03:01:42,911 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:01:42,911 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 29 transitions, 81 flow [2021-03-25 03:01:42,912 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 29 transitions, 81 flow [2021-03-25 03:01:42,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 81 flow [2021-03-25 03:01:42,925 INFO L129 PetriNetUnfolder]: 5/43 cut-off events. [2021-03-25 03:01:42,925 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-25 03:01:42,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 43 events. 5/43 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs, 1 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 44. Up to 10 conditions per place. [2021-03-25 03:01:42,926 INFO L142 LiptonReduction]: Number of co-enabled transitions 208 [2021-03-25 03:01:43,683 INFO L154 LiptonReduction]: Checked pairs total: 366 [2021-03-25 03:01:43,683 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 03:01:43,683 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 772 [2021-03-25 03:01:43,684 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 75 flow [2021-03-25 03:01:43,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 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) [2021-03-25 03:01:43,684 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 03:01:43,684 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 03:01:43,685 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 03:01:43,685 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 03:01:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 03:01:43,685 INFO L82 PathProgramCache]: Analyzing trace with hash 809142188, now seen corresponding path program 1 times [2021-03-25 03:01:43,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 03:01:43,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704790483] [2021-03-25 03:01:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 03:01:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 03:01:43,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:43,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:01:43,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:43,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 03:01:43,742 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:43,743 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:01:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 03:01:43,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704790483] [2021-03-25 03:01:43,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 03:01:43,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 03:01:43,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798679625] [2021-03-25 03:01:43,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 03:01:43,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 03:01:43,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 03:01:43,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 03:01:43,746 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 126 [2021-03-25 03:01:43,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2021-03-25 03:01:43,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 03:01:43,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 126 [2021-03-25 03:01:43,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 03:01:43,764 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-03-25 03:01:43,765 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-03-25 03:01:43,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 42 events. 2/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 116 event pairs, 0 based on Foata normal form. 9/50 useless extension candidates. Maximal degree in co-relation 56. Up to 8 conditions per place. [2021-03-25 03:01:43,765 INFO L132 encePairwiseOnDemand]: 121/126 looper letters, 1 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2021-03-25 03:01:43,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 87 flow [2021-03-25 03:01:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 03:01:43,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 03:01:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2021-03-25 03:01:43,767 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2021-03-25 03:01:43,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2021-03-25 03:01:43,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2021-03-25 03:01:43,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 03:01:43,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2021-03-25 03:01:43,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2021-03-25 03:01:43,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2021-03-25 03:01:43,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2021-03-25 03:01:43,770 INFO L185 Difference]: Start difference. First operand has 30 places, 26 transitions, 75 flow. Second operand 3 states and 273 transitions. [2021-03-25 03:01:43,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 87 flow [2021-03-25 03:01:43,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 84 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 03:01:43,772 INFO L241 Difference]: Finished difference. Result has 31 places, 26 transitions, 82 flow [2021-03-25 03:01:43,772 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2021-03-25 03:01:43,772 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -6 predicate places. [2021-03-25 03:01:43,772 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:01:43,773 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 26 transitions, 82 flow [2021-03-25 03:01:43,773 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 26 transitions, 82 flow [2021-03-25 03:01:43,773 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 31 places, 26 transitions, 82 flow [2021-03-25 03:01:43,778 INFO L129 PetriNetUnfolder]: 2/42 cut-off events. [2021-03-25 03:01:43,778 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 03:01:43,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 42 events. 2/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 54. Up to 8 conditions per place. [2021-03-25 03:01:43,779 INFO L142 LiptonReduction]: Number of co-enabled transitions 140 [2021-03-25 03:01:44,430 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-03-25 03:01:44,596 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-25 03:01:44,949 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 111 [2021-03-25 03:01:45,102 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-03-25 03:01:45,105 INFO L154 LiptonReduction]: Checked pairs total: 45 [2021-03-25 03:01:45,105 INFO L156 LiptonReduction]: Total number of compositions: 8 [2021-03-25 03:01:45,105 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1333 [2021-03-25 03:01:45,106 INFO L480 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 78 flow [2021-03-25 03:01:45,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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) [2021-03-25 03:01:45,107 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 03:01:45,107 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 03:01:45,107 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 03:01:45,107 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 03:01:45,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 03:01:45,108 INFO L82 PathProgramCache]: Analyzing trace with hash -441610140, now seen corresponding path program 1 times [2021-03-25 03:01:45,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 03:01:45,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884200730] [2021-03-25 03:01:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 03:01:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 03:01:45,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:45,153 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 03:01:45,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:45,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 03:01:45,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:45,158 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 03:01:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 03:01:45,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884200730] [2021-03-25 03:01:45,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 03:01:45,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 03:01:45,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235435055] [2021-03-25 03:01:45,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-25 03:01:45,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 03:01:45,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-25 03:01:45,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-25 03:01:45,165 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 134 [2021-03-25 03:01:45,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-25 03:01:45,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 03:01:45,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 134 [2021-03-25 03:01:45,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 03:01:45,196 INFO L129 PetriNetUnfolder]: 2/30 cut-off events. [2021-03-25 03:01:45,197 INFO L130 PetriNetUnfolder]: For 24/49 co-relation queries the response was YES. [2021-03-25 03:01:45,199 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 30 events. 2/30 cut-off events. For 24/49 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 74 event pairs, 0 based on Foata normal form. 6/36 useless extension candidates. Maximal degree in co-relation 56. Up to 10 conditions per place. [2021-03-25 03:01:45,200 INFO L132 encePairwiseOnDemand]: 128/134 looper letters, 4 selfloop transitions, 5 changer transitions 2/24 dead transitions. [2021-03-25 03:01:45,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 112 flow [2021-03-25 03:01:45,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-25 03:01:45,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-25 03:01:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2021-03-25 03:01:45,202 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7985074626865671 [2021-03-25 03:01:45,202 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2021-03-25 03:01:45,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2021-03-25 03:01:45,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 03:01:45,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2021-03-25 03:01:45,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2021-03-25 03:01:45,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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) [2021-03-25 03:01:45,205 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 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) [2021-03-25 03:01:45,206 INFO L185 Difference]: Start difference. First operand has 26 places, 21 transitions, 78 flow. Second operand 4 states and 428 transitions. [2021-03-25 03:01:45,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 112 flow [2021-03-25 03:01:45,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 24 transitions, 101 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 03:01:45,207 INFO L241 Difference]: Finished difference. Result has 29 places, 21 transitions, 85 flow [2021-03-25 03:01:45,207 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=85, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2021-03-25 03:01:45,207 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -8 predicate places. [2021-03-25 03:01:45,208 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:01:45,208 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 21 transitions, 85 flow [2021-03-25 03:01:45,208 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 21 transitions, 85 flow [2021-03-25 03:01:45,208 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 21 transitions, 85 flow [2021-03-25 03:01:45,211 INFO L129 PetriNetUnfolder]: 2/28 cut-off events. [2021-03-25 03:01:45,211 INFO L130 PetriNetUnfolder]: For 17/26 co-relation queries the response was YES. [2021-03-25 03:01:45,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 28 events. 2/28 cut-off events. For 17/26 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 57 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 40. Up to 7 conditions per place. [2021-03-25 03:01:45,212 INFO L142 LiptonReduction]: Number of co-enabled transitions 88 [2021-03-25 03:01:45,380 INFO L154 LiptonReduction]: Checked pairs total: 17 [2021-03-25 03:01:45,380 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 03:01:45,380 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 172 [2021-03-25 03:01:45,386 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 85 flow [2021-03-25 03:01:45,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 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) [2021-03-25 03:01:45,387 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 03:01:45,387 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 03:01:45,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 03:01:45,387 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 03:01:45,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 03:01:45,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1734886501, now seen corresponding path program 1 times [2021-03-25 03:01:45,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 03:01:45,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781303647] [2021-03-25 03:01:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 03:01:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 03:01:45,450 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:45,450 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 03:01:45,453 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:45,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 03:01:45,457 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 03:01:45,458 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 03:01:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 03:01:45,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781303647] [2021-03-25 03:01:45,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 03:01:45,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 03:01:45,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599633804] [2021-03-25 03:01:45,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-25 03:01:45,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 03:01:45,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-25 03:01:45,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-25 03:01:45,467 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 137 [2021-03-25 03:01:45,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2021-03-25 03:01:45,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 03:01:45,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 137 [2021-03-25 03:01:45,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 03:01:45,507 INFO L129 PetriNetUnfolder]: 2/25 cut-off events. [2021-03-25 03:01:45,507 INFO L130 PetriNetUnfolder]: For 51/113 co-relation queries the response was YES. [2021-03-25 03:01:45,507 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 25 events. 2/25 cut-off events. For 51/113 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 9/33 useless extension candidates. Maximal degree in co-relation 44. Up to 7 conditions per place. [2021-03-25 03:01:45,508 INFO L132 encePairwiseOnDemand]: 131/137 looper letters, 5 selfloop transitions, 4 changer transitions 2/22 dead transitions. [2021-03-25 03:01:45,508 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 116 flow [2021-03-25 03:01:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-25 03:01:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-25 03:01:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 522 transitions. [2021-03-25 03:01:45,509 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.762043795620438 [2021-03-25 03:01:45,509 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 522 transitions. [2021-03-25 03:01:45,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 522 transitions. [2021-03-25 03:01:45,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 03:01:45,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 522 transitions. [2021-03-25 03:01:45,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.4) internal successors, (522), 5 states have internal predecessors, (522), 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) [2021-03-25 03:01:45,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-25 03:01:45,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 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) [2021-03-25 03:01:45,513 INFO L185 Difference]: Start difference. First operand has 28 places, 20 transitions, 85 flow. Second operand 5 states and 522 transitions. [2021-03-25 03:01:45,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 116 flow [2021-03-25 03:01:45,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 111 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-25 03:01:45,515 INFO L241 Difference]: Finished difference. Result has 33 places, 20 transitions, 97 flow [2021-03-25 03:01:45,515 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=33, PETRI_TRANSITIONS=20} [2021-03-25 03:01:45,515 INFO L343 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2021-03-25 03:01:45,515 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-25 03:01:45,515 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 33 places, 20 transitions, 97 flow [2021-03-25 03:01:45,516 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 20 transitions, 97 flow [2021-03-25 03:01:45,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 32 places, 20 transitions, 97 flow [2021-03-25 03:01:45,520 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-25 03:01:45,520 INFO L130 PetriNetUnfolder]: For 32/49 co-relation queries the response was YES. [2021-03-25 03:01:45,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 24 events. 2/24 cut-off events. For 32/49 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 39 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 41. Up to 5 conditions per place. [2021-03-25 03:01:45,521 INFO L142 LiptonReduction]: Number of co-enabled transitions 74 [2021-03-25 03:01:45,582 INFO L154 LiptonReduction]: Checked pairs total: 5 [2021-03-25 03:01:45,583 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 03:01:45,584 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 69 [2021-03-25 03:01:45,585 INFO L480 AbstractCegarLoop]: Abstraction has has 31 places, 19 transitions, 95 flow [2021-03-25 03:01:45,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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) [2021-03-25 03:01:45,591 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 03:01:45,591 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 03:01:45,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 03:01:45,592 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread3Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 03:01:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 03:01:45,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1734884300, now seen corresponding path program 1 times [2021-03-25 03:01:45,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 03:01:45,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400605404] [2021-03-25 03:01:45,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 03:01:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 03:01:45,618 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 03:01:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 03:01:45,633 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 03:01:45,656 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 03:01:45,656 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 03:01:45,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-25 03:01:45,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 03:01:45 BasicIcfg [2021-03-25 03:01:45,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 03:01:45,695 INFO L168 Benchmark]: Toolchain (without parser) took 5635.88 ms. Allocated memory was 255.9 MB in the beginning and 486.5 MB in the end (delta: 230.7 MB). Free memory was 234.8 MB in the beginning and 216.7 MB in the end (delta: 18.1 MB). Peak memory consumption was 248.2 MB. Max. memory is 16.0 GB. [2021-03-25 03:01:45,695 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 03:01:45,697 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.33 ms. Allocated memory was 255.9 MB in the beginning and 404.8 MB in the end (delta: 148.9 MB). Free memory was 234.8 MB in the beginning and 368.7 MB in the end (delta: -133.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 03:01:45,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.85 ms. Allocated memory is still 404.8 MB. Free memory was 368.7 MB in the beginning and 367.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 03:01:45,700 INFO L168 Benchmark]: Boogie Preprocessor took 31.91 ms. Allocated memory is still 404.8 MB. Free memory was 367.1 MB in the beginning and 365.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 03:01:45,700 INFO L168 Benchmark]: RCFGBuilder took 504.99 ms. Allocated memory is still 404.8 MB. Free memory was 365.5 MB in the beginning and 342.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-25 03:01:45,701 INFO L168 Benchmark]: TraceAbstraction took 4603.18 ms. Allocated memory was 404.8 MB in the beginning and 486.5 MB in the end (delta: 81.8 MB). Free memory was 342.0 MB in the beginning and 216.7 MB in the end (delta: 125.4 MB). Peak memory consumption was 210.2 MB. Max. memory is 16.0 GB. [2021-03-25 03:01:45,706 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 437.33 ms. Allocated memory was 255.9 MB in the beginning and 404.8 MB in the end (delta: 148.9 MB). Free memory was 234.8 MB in the beginning and 368.7 MB in the end (delta: -133.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 52.85 ms. Allocated memory is still 404.8 MB. Free memory was 368.7 MB in the beginning and 367.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 31.91 ms. Allocated memory is still 404.8 MB. Free memory was 367.1 MB in the beginning and 365.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 504.99 ms. Allocated memory is still 404.8 MB. Free memory was 365.5 MB in the beginning and 342.5 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4603.18 ms. Allocated memory was 404.8 MB in the beginning and 486.5 MB in the end (delta: 81.8 MB). Free memory was 342.0 MB in the beginning and 216.7 MB in the end (delta: 125.4 MB). Peak memory consumption was 210.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1286.6ms, 72 PlacesBefore, 37 PlacesAfterwards, 65 TransitionsBefore, 30 TransitionsAfterwards, 1008 CoEnabledTransitionPairs, 4 FixpointIterations, 16 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 40 TotalNumberOfCompositions, 1293 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 677, positive: 637, positive conditional: 0, positive unconditional: 637, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 466, positive: 449, positive conditional: 0, positive unconditional: 449, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 466, positive: 449, positive conditional: 0, positive unconditional: 449, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 677, positive: 188, positive conditional: 0, positive unconditional: 188, negative: 23, negative conditional: 0, negative unconditional: 23, unknown: 466, unknown conditional: 0, unknown unconditional: 466] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 771.3ms, 34 PlacesBefore, 30 PlacesAfterwards, 29 TransitionsBefore, 26 TransitionsAfterwards, 208 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 366 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 54, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 54, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 28, Positive conditional cache size: 0, Positive unconditional cache size: 28, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1332.2ms, 31 PlacesBefore, 26 PlacesAfterwards, 26 TransitionsBefore, 21 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 45 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 45, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 45, positive: 21, positive conditional: 0, positive unconditional: 21, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 6, Positive conditional cache size: 0, Positive unconditional cache size: 6, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 172.2ms, 29 PlacesBefore, 28 PlacesAfterwards, 21 TransitionsBefore, 20 TransitionsAfterwards, 88 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 17 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 17, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 17, unknown conditional: 0, unknown unconditional: 17] , Statistics on independence cache: Total cache size (in pairs): 12, Positive cache size: 12, Positive conditional cache size: 0, Positive unconditional cache size: 12, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 67.7ms, 33 PlacesBefore, 31 PlacesAfterwards, 20 TransitionsBefore, 19 TransitionsAfterwards, 74 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 5 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={10:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data=0, mutex={10:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={10:0}] [L707] 1 data++ [L709] 1 return 0; [L714] 2 data+=2 [L716] 2 return 0; [L721] COND TRUE 3 data >= 3 [L722] 3 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={10:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 4460.4ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 226.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1377.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 8 SDslu, 3 SDs, 0 SdLazy, 55 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=4, InterpolantAutomatonStates: 15, 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: 28.5ms SsaConstructionTime, 71.8ms SatisfiabilityAnalysisTime, 206.0ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 101 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...