/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 17:34:48,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 17:34:48,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 17:34:48,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 17:34:48,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 17:34:48,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 17:34:48,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 17:34:48,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 17:34:48,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 17:34:48,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 17:34:48,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 17:34:48,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 17:34:48,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 17:34:48,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 17:34:48,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 17:34:48,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 17:34:48,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 17:34:48,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 17:34:48,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 17:34:48,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 17:34:48,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 17:34:48,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 17:34:48,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 17:34:48,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 17:34:48,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 17:34:48,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 17:34:48,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 17:34:48,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 17:34:48,923 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 17:34:48,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 17:34:48,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 17:34:48,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 17:34:48,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 17:34:48,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 17:34:48,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 17:34:48,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 17:34:48,927 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-RepeatedSemanticLbe.epf [2021-03-25 17:34:48,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 17:34:48,961 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 17:34:48,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 17:34:48,965 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 17:34:48,965 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 17:34:48,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 17:34:48,965 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 17:34:48,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 17:34:48,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 17:34:48,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 17:34:48,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 17:34:48,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 17:34:48,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 17:34:48,967 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 17:34:48,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 17:34:48,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 17:34:48,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 17:34:48,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 17:34:48,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 17:34:48,968 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 17:34:48,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 17:34:48,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 17:34:48,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 17:34:48,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 17:34:48,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 17:34:48,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 17:34:48,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 17:34:48,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 17:34:48,970 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 17:34:48,970 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 17:34:49,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 17:34:49,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 17:34:49,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 17:34:49,315 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 17:34:49,317 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 17:34:49,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-03-25 17:34:49,377 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92f1fb3d/f2ab81b3b6c14de9934ccd3385b280b7/FLAG55c13e49e [2021-03-25 17:34:49,744 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 17:34:49,745 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-03-25 17:34:49,745 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 17:34:49,745 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-25 17:34:49,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92f1fb3d/f2ab81b3b6c14de9934ccd3385b280b7/FLAG55c13e49e [2021-03-25 17:34:49,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92f1fb3d/f2ab81b3b6c14de9934ccd3385b280b7 [2021-03-25 17:34:49,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 17:34:49,785 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 17:34:49,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 17:34:49,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 17:34:49,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 17:34:49,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:49,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@625ffdd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49, skipping insertion in model container [2021-03-25 17:34:49,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:49,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 17:34:49,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 17:34:49,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:34:49,961 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 17:34:49,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 17:34:49,988 INFO L208 MainTranslator]: Completed translation [2021-03-25 17:34:49,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49 WrapperNode [2021-03-25 17:34:49,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 17:34:49,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 17:34:49,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 17:34:49,991 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 17:34:49,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:50,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:50,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 17:34:50,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 17:34:50,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 17:34:50,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 17:34:50,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:50,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:50,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:50,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:50,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:50,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:50,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (1/1) ... [2021-03-25 17:34:50,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 17:34:50,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 17:34:50,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 17:34:50,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 17:34:50,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (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 17:34:50,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 17:34:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-25 17:34:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-25 17:34:50,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 17:34:50,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 17:34:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-25 17:34:50,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 17:34:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 17:34:50,119 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2021-03-25 17:34:50,119 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2021-03-25 17:34:50,120 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 17:34:50,362 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 17:34:50,362 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-25 17:34:50,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:34:50 BoogieIcfgContainer [2021-03-25 17:34:50,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 17:34:50,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 17:34:50,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 17:34:50,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 17:34:50,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 05:34:49" (1/3) ... [2021-03-25 17:34:50,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1056ef4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:34:50, skipping insertion in model container [2021-03-25 17:34:50,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 05:34:49" (2/3) ... [2021-03-25 17:34:50,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1056ef4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 05:34:50, skipping insertion in model container [2021-03-25 17:34:50,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 05:34:50" (3/3) ... [2021-03-25 17:34:50,370 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest1.c [2021-03-25 17:34:50,374 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 17:34:50,377 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-25 17:34:50,378 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 17:34:50,400 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,400 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,401 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,401 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,401 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,401 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,401 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,402 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,402 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,402 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,402 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,402 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,403 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,403 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,403 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,403 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,403 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,403 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,404 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,404 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,404 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,404 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,405 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,405 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,405 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,405 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,405 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,405 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,406 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,406 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,406 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,406 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,406 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,406 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,407 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,407 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,409 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,409 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,409 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,409 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,409 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,420 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,421 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,421 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,421 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,421 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 17:34:50,439 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-25 17:34:50,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-25 17:34:50,472 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 17:34:50,473 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 17:34:50,473 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 17:34:50,473 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 17:34:50,473 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 17:34:50,473 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 17:34:50,473 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 17:34:50,473 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 17:34:50,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 100 flow [2021-03-25 17:34:50,510 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-03-25 17:34:50,510 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 17:34:50,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 0/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 17:34:50,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 42 transitions, 100 flow [2021-03-25 17:34:50,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 76 flow [2021-03-25 17:34:50,516 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:34:50,526 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-25 17:34:50,529 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-25 17:34:50,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 76 flow [2021-03-25 17:34:50,541 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-03-25 17:34:50,541 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 17:34:50,541 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 0/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-25 17:34:50,543 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-25 17:34:51,214 INFO L154 LiptonReduction]: Checked pairs total: 244 [2021-03-25 17:34:51,215 INFO L156 LiptonReduction]: Total number of compositions: 17 [2021-03-25 17:34:51,216 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 701 [2021-03-25 17:34:51,238 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-25 17:34:51,238 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-25 17:34:51,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:34:51,239 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:34:51,239 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:34:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:34:51,243 INFO L82 PathProgramCache]: Analyzing trace with hash -71435164, now seen corresponding path program 1 times [2021-03-25 17:34:51,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:34:51,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500910224] [2021-03-25 17:34:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:34:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:34:51,410 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:51,410 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 17:34:51,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:51,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:34:51,418 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 17:34:51,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500910224] [2021-03-25 17:34:51,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:34:51,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 17:34:51,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757891522] [2021-03-25 17:34:51,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 17:34:51,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:34:51,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 17:34:51,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 17:34:51,439 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 59 [2021-03-25 17:34:51,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 17:34:51,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:34:51,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 59 [2021-03-25 17:34:51,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:34:51,471 INFO L129 PetriNetUnfolder]: 6/38 cut-off events. [2021-03-25 17:34:51,471 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-25 17:34:51,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 38 events. 6/38 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 4 based on Foata normal form. 6/42 useless extension candidates. Maximal degree in co-relation 50. Up to 19 conditions per place. [2021-03-25 17:34:51,473 INFO L132 encePairwiseOnDemand]: 55/59 looper letters, 9 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-25 17:34:51,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 74 flow [2021-03-25 17:34:51,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 17:34:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 17:34:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2021-03-25 17:34:51,483 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7344632768361582 [2021-03-25 17:34:51,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2021-03-25 17:34:51,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2021-03-25 17:34:51,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:34:51,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2021-03-25 17:34:51,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 17:34:51,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 17:34:51,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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 17:34:51,494 INFO L185 Difference]: Start difference. First operand has 21 places, 15 transitions, 42 flow. Second operand 3 states and 130 transitions. [2021-03-25 17:34:51,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 74 flow [2021-03-25 17:34:51,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-25 17:34:51,497 INFO L241 Difference]: Finished difference. Result has 20 places, 17 transitions, 53 flow [2021-03-25 17:34:51,499 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=20, PETRI_TRANSITIONS=17} [2021-03-25 17:34:51,500 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2021-03-25 17:34:51,500 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:34:51,500 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 17 transitions, 53 flow [2021-03-25 17:34:51,500 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 17 transitions, 53 flow [2021-03-25 17:34:51,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 17 transitions, 53 flow [2021-03-25 17:34:51,506 INFO L129 PetriNetUnfolder]: 1/26 cut-off events. [2021-03-25 17:34:51,506 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 17:34:51,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 26 events. 1/26 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 1 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 23. Up to 9 conditions per place. [2021-03-25 17:34:51,507 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-25 17:34:51,744 INFO L154 LiptonReduction]: Checked pairs total: 39 [2021-03-25 17:34:51,744 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-25 17:34:51,744 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 244 [2021-03-25 17:34:51,747 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 51 flow [2021-03-25 17:34:51,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 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 17:34:51,748 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:34:51,748 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:34:51,748 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 17:34:51,748 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:34:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:34:51,750 INFO L82 PathProgramCache]: Analyzing trace with hash 684196891, now seen corresponding path program 1 times [2021-03-25 17:34:51,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:34:51,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494588368] [2021-03-25 17:34:51,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:34:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:34:51,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:51,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:34:51,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:51,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:34:51,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:51,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:34:51,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:51,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:34:51,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:51,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:34:51,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:51,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:34:51,896 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 17:34:51,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494588368] [2021-03-25 17:34:51,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:34:51,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 17:34:51,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70058124] [2021-03-25 17:34:51,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 17:34:51,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:34:51,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 17:34:51,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-25 17:34:51,904 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 61 [2021-03-25 17:34:51,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 51 flow. Second operand has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 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 17:34:51,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:34:51,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 61 [2021-03-25 17:34:51,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:34:52,006 INFO L129 PetriNetUnfolder]: 9/45 cut-off events. [2021-03-25 17:34:52,007 INFO L130 PetriNetUnfolder]: For 23/26 co-relation queries the response was YES. [2021-03-25 17:34:52,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 45 events. 9/45 cut-off events. For 23/26 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 123 event pairs, 2 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 67. Up to 25 conditions per place. [2021-03-25 17:34:52,008 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 10 selfloop transitions, 7 changer transitions 6/28 dead transitions. [2021-03-25 17:34:52,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 140 flow [2021-03-25 17:34:52,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 17:34:52,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 17:34:52,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 295 transitions. [2021-03-25 17:34:52,016 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6045081967213115 [2021-03-25 17:34:52,016 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 295 transitions. [2021-03-25 17:34:52,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 295 transitions. [2021-03-25 17:34:52,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:34:52,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 295 transitions. [2021-03-25 17:34:52,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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 17:34:52,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 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 17:34:52,023 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 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 17:34:52,024 INFO L185 Difference]: Start difference. First operand has 19 places, 16 transitions, 51 flow. Second operand 8 states and 295 transitions. [2021-03-25 17:34:52,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 140 flow [2021-03-25 17:34:52,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 17:34:52,026 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 91 flow [2021-03-25 17:34:52,026 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=91, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2021-03-25 17:34:52,026 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2021-03-25 17:34:52,026 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:34:52,027 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 20 transitions, 91 flow [2021-03-25 17:34:52,027 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 20 transitions, 91 flow [2021-03-25 17:34:52,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 20 transitions, 91 flow [2021-03-25 17:34:52,034 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-03-25 17:34:52,035 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-25 17:34:52,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 25 events. 3/25 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 45 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 56. Up to 10 conditions per place. [2021-03-25 17:34:52,036 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-25 17:34:52,267 INFO L154 LiptonReduction]: Checked pairs total: 23 [2021-03-25 17:34:52,267 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-25 17:34:52,267 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 241 [2021-03-25 17:34:52,268 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 91 flow [2021-03-25 17:34:52,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 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 17:34:52,269 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:34:52,269 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:34:52,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 17:34:52,269 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:34:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:34:52,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1661648301, now seen corresponding path program 1 times [2021-03-25 17:34:52,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:34:52,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332219866] [2021-03-25 17:34:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:34:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 17:34:52,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:52,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 17:34:52,301 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:52,301 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:34:52,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:52,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-25 17:34:52,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:52,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:34:52,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:52,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-25 17:34:52,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 17:34:52,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 17:34:52,338 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 17:34:52,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332219866] [2021-03-25 17:34:52,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 17:34:52,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-25 17:34:52,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155632138] [2021-03-25 17:34:52,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-25 17:34:52,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 17:34:52,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-25 17:34:52,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-25 17:34:52,341 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2021-03-25 17:34:52,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 91 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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 17:34:52,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 17:34:52,342 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2021-03-25 17:34:52,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 17:34:52,462 INFO L129 PetriNetUnfolder]: 5/34 cut-off events. [2021-03-25 17:34:52,462 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-03-25 17:34:52,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 34 events. 5/34 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 87 event pairs, 1 based on Foata normal form. 1/34 useless extension candidates. Maximal degree in co-relation 110. Up to 18 conditions per place. [2021-03-25 17:34:52,463 INFO L132 encePairwiseOnDemand]: 58/68 looper letters, 11 selfloop transitions, 7 changer transitions 3/25 dead transitions. [2021-03-25 17:34:52,463 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 170 flow [2021-03-25 17:34:52,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-25 17:34:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-25 17:34:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2021-03-25 17:34:52,464 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5404411764705882 [2021-03-25 17:34:52,464 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 294 transitions. [2021-03-25 17:34:52,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 294 transitions. [2021-03-25 17:34:52,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 17:34:52,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 294 transitions. [2021-03-25 17:34:52,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 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 17:34:52,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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 17:34:52,467 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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 17:34:52,467 INFO L185 Difference]: Start difference. First operand has 25 places, 18 transitions, 91 flow. Second operand 8 states and 294 transitions. [2021-03-25 17:34:52,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 170 flow [2021-03-25 17:34:52,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 136 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-25 17:34:52,469 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 106 flow [2021-03-25 17:34:52,469 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=106, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2021-03-25 17:34:52,470 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2021-03-25 17:34:52,470 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 17:34:52,470 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 20 transitions, 106 flow [2021-03-25 17:34:52,470 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 20 transitions, 106 flow [2021-03-25 17:34:52,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 20 transitions, 106 flow [2021-03-25 17:34:52,474 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-25 17:34:52,474 INFO L130 PetriNetUnfolder]: For 23/29 co-relation queries the response was YES. [2021-03-25 17:34:52,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 24 events. 2/24 cut-off events. For 23/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 57. Up to 7 conditions per place. [2021-03-25 17:34:52,474 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-25 17:34:52,475 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 17:34:52,475 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 17:34:52,475 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 5 [2021-03-25 17:34:52,476 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 106 flow [2021-03-25 17:34:52,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 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 17:34:52,477 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 17:34:52,477 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 17:34:52,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 17:34:52,477 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-25 17:34:52,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 17:34:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash -288995689, now seen corresponding path program 1 times [2021-03-25 17:34:52,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 17:34:52,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455155832] [2021-03-25 17:34:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 17:34:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:34:52,488 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:34:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-25 17:34:52,496 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-25 17:34:52,514 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-25 17:34:52,515 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-25 17:34:52,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 17:34:52,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 05:34:52 BasicIcfg [2021-03-25 17:34:52,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 17:34:52,556 INFO L168 Benchmark]: Toolchain (without parser) took 2768.69 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 234.6 MB in the beginning and 345.7 MB in the end (delta: -111.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:34:52,556 INFO L168 Benchmark]: CDTParser took 0.12 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 17:34:52,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.38 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 234.0 MB in the beginning and 360.2 MB in the end (delta: -126.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-25 17:34:52,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.17 ms. Allocated memory is still 377.5 MB. Free memory was 360.2 MB in the beginning and 358.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:34:52,561 INFO L168 Benchmark]: Boogie Preprocessor took 25.41 ms. Allocated memory is still 377.5 MB. Free memory was 358.8 MB in the beginning and 358.1 MB in the end (delta: 720.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 17:34:52,561 INFO L168 Benchmark]: RCFGBuilder took 314.93 ms. Allocated memory is still 377.5 MB. Free memory was 358.1 MB in the beginning and 344.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-25 17:34:52,562 INFO L168 Benchmark]: TraceAbstraction took 2188.08 ms. Allocated memory is still 377.5 MB. Free memory was 343.4 MB in the beginning and 345.7 MB in the end (delta: -2.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 17:34:52,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 204.38 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 234.0 MB in the beginning and 360.2 MB in the end (delta: -126.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.17 ms. Allocated memory is still 377.5 MB. Free memory was 360.2 MB in the beginning and 358.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.41 ms. Allocated memory is still 377.5 MB. Free memory was 358.8 MB in the beginning and 358.1 MB in the end (delta: 720.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 314.93 ms. Allocated memory is still 377.5 MB. Free memory was 358.1 MB in the beginning and 344.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2188.08 ms. Allocated memory is still 377.5 MB. Free memory was 343.4 MB in the beginning and 345.7 MB in the end (delta: -2.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 685.8ms, 38 PlacesBefore, 21 PlacesAfterwards, 32 TransitionsBefore, 15 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 4 FixpointIterations, 7 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 17 TotalNumberOfCompositions, 244 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 154, positive: 137, positive conditional: 0, positive unconditional: 137, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 133, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 133, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 133, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 13, negative conditional: 0, negative unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 42, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 154, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 133, unknown conditional: 0, unknown unconditional: 133] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 243.6ms, 20 PlacesBefore, 19 PlacesAfterwards, 17 TransitionsBefore, 16 TransitionsAfterwards, 50 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, 39 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 10, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 29, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 10, unknown conditional: 0, unknown unconditional: 10] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 239.8ms, 30 PlacesBefore, 25 PlacesAfterwards, 20 TransitionsBefore, 18 TransitionsAfterwards, 40 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 7 TotalNumberOfCompositions, 23 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 23, positive conditional: 0, positive unconditional: 23, 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: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 23, positive: 17, positive conditional: 0, positive unconditional: 17, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 0, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2ms, 32 PlacesBefore, 29 PlacesAfterwards, 20 TransitionsBefore, 20 TransitionsAfterwards, 28 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.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] , 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: UnionIndependenceRelation.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] , UnionIndependenceRelation.Statistics on underlying relations: [ 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] , SemanticIndependenceRelation.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] , SemanticIndependenceRelation.Query Time [ms]: [ 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: 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] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - CounterExampleResult [Line: 36]: assertion can be violated assertion can be violated We found a FailurePath: [L13] 0 int x = 0; [L27] 0 pthread_t first_th_id; [L28] 0 pthread_t second_th_id; [L30] FCALL, FORK 0 pthread_create(&first_th_id, NULL, inc, NULL) VAL [n={0:0}, x=0] [L31] FCALL, FORK 0 pthread_create(&second_th_id, NULL, dec, NULL) VAL [n={0:0}, n={0:0}, x=0] [L33] 0 \read(first_th_id) VAL [n={0:0}, n={0:0}, x=0] [L17] 1 x++ [L18] 1 return NULL; [L33] FCALL, JOIN 1 pthread_join(first_th_id, NULL) VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1] [L34] 0 int y = x; VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1] [L22] 2 x-- [L23] 2 return NULL; [L36] 0 CodeAnnotStmt[Assertion] VAL [\result={0:0}, \result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 2047.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 319.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 760.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 11 SDslu, 23 SDs, 0 SdLazy, 173 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 105.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=3, InterpolantAutomatonStates: 19, 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: 12.5ms SsaConstructionTime, 56.0ms SatisfiabilityAnalysisTime, 218.6ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 143 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...