/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 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 09:13:54,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 09:13:54,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 09:13:54,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 09:13:54,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 09:13:54,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 09:13:54,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 09:13:54,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 09:13:54,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 09:13:54,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 09:13:54,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 09:13:54,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 09:13:54,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 09:13:54,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 09:13:54,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 09:13:54,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 09:13:54,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 09:13:54,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 09:13:54,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 09:13:54,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 09:13:54,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 09:13:54,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 09:13:54,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 09:13:54,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 09:13:54,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 09:13:54,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 09:13:54,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 09:13:54,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 09:13:54,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 09:13:54,955 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 09:13:54,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 09:13:54,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 09:13:54,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 09:13:54,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 09:13:54,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 09:13:54,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 09:13:54,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 09:13:54,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 09:13:54,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 09:13:54,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 09:13:54,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 09:13:54,965 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 [2021-06-11 09:13:55,000 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 09:13:55,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 09:13:55,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 09:13:55,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 09:13:55,004 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 09:13:55,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 09:13:55,004 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 09:13:55,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 09:13:55,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 09:13:55,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 09:13:55,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 09:13:55,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 09:13:55,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 09:13:55,005 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 09:13:55,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 09:13:55,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 09:13:55,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 09:13:55,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 09:13:55,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 09:13:55,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 09:13:55,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 09:13:55,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 09:13:55,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 09:13:55,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 09:13:55,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 09:13:55,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 09:13:55,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 09:13:55,007 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 09:13:55,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 09:13:55,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 09:13:55,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 09:13:55,329 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 09:13:55,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 09:13:55,332 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-11 09:13:55,332 INFO L275 PluginConnector]: CDTParser initialized [2021-06-11 09:13:55,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-06-11 09:13:55,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4354b69f2/e4aeecf1fa9f43b9beed0094337321bb/FLAG269149e0a [2021-06-11 09:13:55,857 INFO L306 CDTParser]: Found 1 translation units. [2021-06-11 09:13:55,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-06-11 09:13:55,858 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-11 09:13:55,858 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-11 09:13:55,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4354b69f2/e4aeecf1fa9f43b9beed0094337321bb/FLAG269149e0a [2021-06-11 09:13:55,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4354b69f2/e4aeecf1fa9f43b9beed0094337321bb [2021-06-11 09:13:55,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 09:13:55,911 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-11 09:13:55,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-11 09:13:55,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-11 09:13:55,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-11 09:13:55,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 09:13:55" (1/1) ... [2021-06-11 09:13:55,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e791524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:55, skipping insertion in model container [2021-06-11 09:13:55,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 09:13:55" (1/1) ... [2021-06-11 09:13:55,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-11 09:13:55,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-11 09:13:56,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 09:13:56,074 INFO L203 MainTranslator]: Completed pre-run [2021-06-11 09:13:56,083 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 09:13:56,120 INFO L208 MainTranslator]: Completed translation [2021-06-11 09:13:56,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56 WrapperNode [2021-06-11 09:13:56,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-11 09:13:56,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 09:13:56,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 09:13:56,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 09:13:56,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (1/1) ... [2021-06-11 09:13:56,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (1/1) ... [2021-06-11 09:13:56,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 09:13:56,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 09:13:56,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 09:13:56,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 09:13:56,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (1/1) ... [2021-06-11 09:13:56,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (1/1) ... [2021-06-11 09:13:56,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (1/1) ... [2021-06-11 09:13:56,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (1/1) ... [2021-06-11 09:13:56,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (1/1) ... [2021-06-11 09:13:56,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (1/1) ... [2021-06-11 09:13:56,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (1/1) ... [2021-06-11 09:13:56,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 09:13:56,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 09:13:56,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 09:13:56,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 09:13:56,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (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 [2021-06-11 09:13:56,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-11 09:13:56,238 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-06-11 09:13:56,238 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-06-11 09:13:56,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 09:13:56,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 09:13:56,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-11 09:13:56,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-11 09:13:56,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-11 09:13:56,241 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2021-06-11 09:13:56,241 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2021-06-11 09:13:56,242 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-11 09:13:56,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 09:13:56,477 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-11 09:13:56,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:13:56 BoogieIcfgContainer [2021-06-11 09:13:56,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 09:13:56,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 09:13:56,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 09:13:56,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 09:13:56,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.06 09:13:55" (1/3) ... [2021-06-11 09:13:56,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c88e57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 09:13:56, skipping insertion in model container [2021-06-11 09:13:56,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 09:13:56" (2/3) ... [2021-06-11 09:13:56,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c88e57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 09:13:56, skipping insertion in model container [2021-06-11 09:13:56,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 09:13:56" (3/3) ... [2021-06-11 09:13:56,483 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest1.c [2021-06-11 09:13:56,505 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 09:13:56,508 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 09:13:56,508 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 09:13:56,540 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,540 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,540 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,540 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,541 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,541 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,541 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,541 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,541 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,541 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,543 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,543 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,543 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,543 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,543 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,543 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,544 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,544 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,545 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,546 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,546 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,546 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,546 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,547 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,547 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,547 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,547 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,547 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,547 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,548 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,548 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,548 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,549 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,549 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,549 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,549 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,552 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,553 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,553 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,553 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,553 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,565 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,566 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,566 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,566 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,566 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 09:13:56,574 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-11 09:13:56,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-11 09:13:56,618 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 09:13:56,618 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 09:13:56,619 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 09:13:56,619 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 09:13:56,619 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 09:13:56,619 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 09:13:56,619 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 09:13:56,619 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 09:13:56,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 100 flow [2021-06-11 09:13:56,666 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-06-11 09:13:56,666 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 09:13:56,669 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. [2021-06-11 09:13:56,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 42 transitions, 100 flow [2021-06-11 09:13:56,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 76 flow [2021-06-11 09:13:56,681 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:13:56,691 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 32 transitions, 76 flow [2021-06-11 09:13:56,694 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 32 transitions, 76 flow [2021-06-11 09:13:56,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 76 flow [2021-06-11 09:13:56,712 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-06-11 09:13:56,712 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 09:13:56,712 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. [2021-06-11 09:13:56,714 INFO L151 LiptonReduction]: Number of co-enabled transitions 252 [2021-06-11 09:13:56,896 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:56,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:56,918 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:56,919 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 09:13:56,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 09:13:56,953 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:56,954 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:56,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:56,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,023 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,057 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,103 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,123 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,307 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,327 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 09:13:57,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 09:13:57,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,346 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,347 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:13:57,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-11 09:13:57,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,351 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-11 09:13:57,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:13:57,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:13:57,430 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,466 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,618 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:57,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 09:13:57,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 09:13:57,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,885 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 09:13:57,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-11 09:13:57,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 09:13:57,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:57,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-11 09:13:57,891 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 09:13:57,901 INFO L163 LiptonReduction]: Checked pairs total: 324 [2021-06-11 09:13:57,901 INFO L165 LiptonReduction]: Total number of compositions: 19 [2021-06-11 09:13:57,903 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1223 [2021-06-11 09:13:57,917 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-06-11 09:13:57,917 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-11 09:13:57,918 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:13:57,918 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:13:57,919 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:13:57,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:13:57,924 INFO L82 PathProgramCache]: Analyzing trace with hash -497391019, now seen corresponding path program 1 times [2021-06-11 09:13:57,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:13:57,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392145252] [2021-06-11 09:13:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:13:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 09:13:58,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:58,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 09:13:58,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 09:13:58,031 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-11 09:13:58,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-11 09:13:58,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392145252] [2021-06-11 09:13:58,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 09:13:58,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-11 09:13:58,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892339518] [2021-06-11 09:13:58,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-11 09:13:58,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 09:13:58,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-11 09:13:58,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-11 09:13:58,061 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 61 [2021-06-11 09:13:58,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-06-11 09:13:58,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 09:13:58,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 61 [2021-06-11 09:13:58,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 09:13:58,110 INFO L129 PetriNetUnfolder]: 6/34 cut-off events. [2021-06-11 09:13:58,110 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-11 09:13:58,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 34 events. 6/34 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 79 event pairs, 4 based on Foata normal form. 6/38 useless extension candidates. Maximal degree in co-relation 47. Up to 18 conditions per place. [2021-06-11 09:13:58,113 INFO L132 encePairwiseOnDemand]: 57/61 looper letters, 8 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2021-06-11 09:13:58,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 68 flow [2021-06-11 09:13:58,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-11 09:13:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-11 09:13:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2021-06-11 09:13:58,125 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7049180327868853 [2021-06-11 09:13:58,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2021-06-11 09:13:58,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2021-06-11 09:13:58,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 09:13:58,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2021-06-11 09:13:58,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2021-06-11 09:13:58,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2021-06-11 09:13:58,138 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2021-06-11 09:13:58,139 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 38 flow. Second operand 3 states and 129 transitions. [2021-06-11 09:13:58,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 68 flow [2021-06-11 09:13:58,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 17 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-11 09:13:58,143 INFO L241 Difference]: Finished difference. Result has 18 places, 15 transitions, 49 flow [2021-06-11 09:13:58,145 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=18, PETRI_TRANSITIONS=15} [2021-06-11 09:13:58,146 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-06-11 09:13:58,146 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-11 09:13:58,146 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 18 places, 15 transitions, 49 flow [2021-06-11 09:13:58,146 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 18 places, 15 transitions, 49 flow [2021-06-11 09:13:58,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 18 places, 15 transitions, 49 flow [2021-06-11 09:13:58,151 INFO L129 PetriNetUnfolder]: 1/22 cut-off events. [2021-06-11 09:13:58,151 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-11 09:13:58,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 22 events. 1/22 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 1 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 20. Up to 9 conditions per place. [2021-06-11 09:13:58,152 INFO L151 LiptonReduction]: Number of co-enabled transitions 34 [2021-06-11 09:13:58,153 INFO L163 LiptonReduction]: Checked pairs total: 24 [2021-06-11 09:13:58,153 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 09:13:58,154 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 8 [2021-06-11 09:13:58,155 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 15 transitions, 49 flow [2021-06-11 09:13:58,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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) [2021-06-11 09:13:58,155 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 09:13:58,155 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-11 09:13:58,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 09:13:58,155 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 09:13:58,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 09:13:58,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1635125273, now seen corresponding path program 1 times [2021-06-11 09:13:58,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 09:13:58,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512091440] [2021-06-11 09:13:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 09:13:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:13:58,173 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:13:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-11 09:13:58,187 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-11 09:13:58,203 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-11 09:13:58,203 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-06-11 09:13:58,204 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-11 09:13:58,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 09:13:58 BasicIcfg [2021-06-11 09:13:58,226 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 09:13:58,227 INFO L168 Benchmark]: Toolchain (without parser) took 2315.56 ms. Allocated memory is still 362.8 MB. Free memory was 325.3 MB in the beginning and 138.9 MB in the end (delta: 186.4 MB). Peak memory consumption was 185.9 MB. Max. memory is 16.0 GB. [2021-06-11 09:13:58,227 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 362.8 MB. Free memory is still 343.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 09:13:58,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.57 ms. Allocated memory is still 362.8 MB. Free memory was 325.1 MB in the beginning and 346.6 MB in the end (delta: -21.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-11 09:13:58,228 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.91 ms. Allocated memory is still 362.8 MB. Free memory was 346.6 MB in the beginning and 345.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 09:13:58,228 INFO L168 Benchmark]: Boogie Preprocessor took 23.52 ms. Allocated memory is still 362.8 MB. Free memory was 345.5 MB in the beginning and 344.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 09:13:58,229 INFO L168 Benchmark]: RCFGBuilder took 303.44 ms. Allocated memory is still 362.8 MB. Free memory was 344.2 MB in the beginning and 327.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-11 09:13:58,229 INFO L168 Benchmark]: TraceAbstraction took 1746.84 ms. Allocated memory is still 362.8 MB. Free memory was 326.7 MB in the beginning and 138.9 MB in the end (delta: 187.7 MB). Peak memory consumption was 188.7 MB. Max. memory is 16.0 GB. [2021-06-11 09:13:58,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 362.8 MB. Free memory is still 343.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 207.57 ms. Allocated memory is still 362.8 MB. Free memory was 325.1 MB in the beginning and 346.6 MB in the end (delta: -21.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.91 ms. Allocated memory is still 362.8 MB. Free memory was 346.6 MB in the beginning and 345.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.52 ms. Allocated memory is still 362.8 MB. Free memory was 345.5 MB in the beginning and 344.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 303.44 ms. Allocated memory is still 362.8 MB. Free memory was 344.2 MB in the beginning and 327.7 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1746.84 ms. Allocated memory is still 362.8 MB. Free memory was 326.7 MB in the beginning and 138.9 MB in the end (delta: 187.7 MB). Peak memory consumption was 188.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1206.8ms, 38 PlacesBefore, 19 PlacesAfterwards, 32 TransitionsBefore, 13 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 5 FixpointIterations, 8 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 19 TotalNumberOfCompositions, 324 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 172, positive: 144, positive conditional: 0, positive unconditional: 144, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 146, positive: 128, positive conditional: 0, positive unconditional: 128, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 146, positive: 128, positive conditional: 0, positive unconditional: 128, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 146, positive: 128, positive conditional: 0, positive unconditional: 128, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 70, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 172, positive: 16, positive conditional: 0, positive unconditional: 16, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 146, unknown conditional: 0, unknown unconditional: 146] , Statistics on independence cache: Total cache size (in pairs): 211, Positive cache size: 193, Positive conditional cache size: 0, Positive unconditional cache size: 193, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2ms, 18 PlacesBefore, 18 PlacesAfterwards, 15 TransitionsBefore, 15 TransitionsAfterwards, 34 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 24 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, 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: 10, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 212, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - 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] [L22] 2 x-- VAL [n={0:0}, n={0:0}, n={0:0}, x=0, x--=0] [L33] 0 \read(first_th_id) VAL [n={0:0}, n={0:0}, n={0:0}, x=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}, n={0:0}, x=1, x--=0] [L34] 0 int y = x; VAL [\result={0:0}, n={0:0}, n={0:0}, n={0:0}, n={0:0}, x=1, x--=0] [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=-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1591.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 90.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1290.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 9 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 10 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.4ms SsaConstructionTime, 32.3ms SatisfiabilityAnalysisTime, 35.0ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...