/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-RepeatedSemanticLbeWithDisjunctivePredicates.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 13:08:13,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 13:08:13,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 13:08:13,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 13:08:13,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 13:08:13,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 13:08:13,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 13:08:13,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 13:08:13,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 13:08:13,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 13:08:13,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 13:08:13,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 13:08:13,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 13:08:13,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 13:08:13,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 13:08:13,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 13:08:13,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 13:08:13,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 13:08:13,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 13:08:13,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 13:08:13,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 13:08:13,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 13:08:13,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 13:08:13,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 13:08:13,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 13:08:13,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 13:08:13,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 13:08:13,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 13:08:13,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 13:08:13,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 13:08:13,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 13:08:13,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 13:08:13,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 13:08:13,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 13:08:13,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 13:08:13,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 13:08:13,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 13:08:13,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 13:08:13,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 13:08:13,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 13:08:13,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 13:08:14,000 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-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 13:08:14,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 13:08:14,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 13:08:14,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 13:08:14,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 13:08:14,021 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 13:08:14,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 13:08:14,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 13:08:14,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 13:08:14,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 13:08:14,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 13:08:14,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 13:08:14,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 13:08:14,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 13:08:14,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 13:08:14,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 13:08:14,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 13:08:14,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 13:08:14,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 13:08:14,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 13:08:14,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 13:08:14,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 13:08:14,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:08:14,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 13:08:14,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 13:08:14,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 13:08:14,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 13:08:14,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 13:08:14,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 13:08:14,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 13:08:14,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 13:08:14,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 13:08:14,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 13:08:14,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 13:08:14,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 13:08:14,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 13:08:14,373 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 13:08:14,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-03-26 13:08:14,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f8677fd7/07a4d25818244373a2153b99d65dee0b/FLAG5bac94f2e [2021-03-26 13:08:14,883 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 13:08:14,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/ThreadIdTest1.c [2021-03-26 13:08:14,883 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-26 13:08:14,884 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-26 13:08:14,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f8677fd7/07a4d25818244373a2153b99d65dee0b/FLAG5bac94f2e [2021-03-26 13:08:14,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f8677fd7/07a4d25818244373a2153b99d65dee0b [2021-03-26 13:08:14,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 13:08:14,943 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 13:08:14,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 13:08:14,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 13:08:14,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 13:08:14,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 01:08:14" (1/1) ... [2021-03-26 13:08:14,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6eaed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:14, skipping insertion in model container [2021-03-26 13:08:14,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 01:08:14" (1/1) ... [2021-03-26 13:08:14,960 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 13:08:14,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 13:08:15,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 13:08:15,118 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 13:08:15,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 13:08:15,186 INFO L208 MainTranslator]: Completed translation [2021-03-26 13:08:15,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15 WrapperNode [2021-03-26 13:08:15,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 13:08:15,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 13:08:15,189 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 13:08:15,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 13:08:15,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (1/1) ... [2021-03-26 13:08:15,206 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (1/1) ... [2021-03-26 13:08:15,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 13:08:15,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 13:08:15,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 13:08:15,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 13:08:15,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (1/1) ... [2021-03-26 13:08:15,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (1/1) ... [2021-03-26 13:08:15,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (1/1) ... [2021-03-26 13:08:15,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (1/1) ... [2021-03-26 13:08:15,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (1/1) ... [2021-03-26 13:08:15,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (1/1) ... [2021-03-26 13:08:15,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (1/1) ... [2021-03-26 13:08:15,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 13:08:15,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 13:08:15,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 13:08:15,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 13:08:15,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (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 [2021-03-26 13:08:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 13:08:15,328 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-26 13:08:15,328 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-26 13:08:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 13:08:15,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 13:08:15,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-26 13:08:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 13:08:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 13:08:15,330 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2021-03-26 13:08:15,330 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2021-03-26 13:08:15,332 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 13:08:15,591 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 13:08:15,592 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-26 13:08:15,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:08:15 BoogieIcfgContainer [2021-03-26 13:08:15,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 13:08:15,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 13:08:15,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 13:08:15,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 13:08:15,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 01:08:14" (1/3) ... [2021-03-26 13:08:15,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b434576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:08:15, skipping insertion in model container [2021-03-26 13:08:15,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:08:15" (2/3) ... [2021-03-26 13:08:15,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b434576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:08:15, skipping insertion in model container [2021-03-26 13:08:15,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:08:15" (3/3) ... [2021-03-26 13:08:15,599 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest1.c [2021-03-26 13:08:15,604 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 13:08:15,606 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 13:08:15,607 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 13:08:15,628 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,628 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,628 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,629 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,629 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,629 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,629 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,629 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,629 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,630 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,630 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,630 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,630 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,630 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,631 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,631 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,631 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,631 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,631 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,632 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,632 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,632 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,632 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,632 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,632 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,632 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,633 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,633 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,633 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,633 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,633 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,634 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,634 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,634 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,634 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,634 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,636 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,636 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,636 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,637 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,637 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,641 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,641 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,641 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,641 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,642 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:08:15,646 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-26 13:08:15,663 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-26 13:08:15,685 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 13:08:15,685 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 13:08:15,685 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 13:08:15,685 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 13:08:15,686 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 13:08:15,686 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 13:08:15,686 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 13:08:15,686 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 13:08:15,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 100 flow [2021-03-26 13:08:15,727 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-03-26 13:08:15,728 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 13:08:15,729 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. [2021-03-26 13:08:15,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 42 transitions, 100 flow [2021-03-26 13:08:15,737 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 76 flow [2021-03-26 13:08:15,738 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:08:15,752 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-26 13:08:15,755 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 32 transitions, 76 flow [2021-03-26 13:08:15,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 76 flow [2021-03-26 13:08:15,767 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-03-26 13:08:15,767 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 13:08:15,767 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. [2021-03-26 13:08:15,769 INFO L142 LiptonReduction]: Number of co-enabled transitions 252 [2021-03-26 13:08:16,405 INFO L154 LiptonReduction]: Checked pairs total: 244 [2021-03-26 13:08:16,405 INFO L156 LiptonReduction]: Total number of compositions: 17 [2021-03-26 13:08:16,407 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 670 [2021-03-26 13:08:16,417 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-26 13:08:16,417 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 13:08:16,417 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:08:16,418 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:08:16,418 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:08:16,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:08:16,423 INFO L82 PathProgramCache]: Analyzing trace with hash -71435164, now seen corresponding path program 1 times [2021-03-26 13:08:16,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:08:16,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544358296] [2021-03-26 13:08:16,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:08:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:08:16,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:16,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:08:16,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:16,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:08:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:08:16,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544358296] [2021-03-26 13:08:16,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:08:16,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-26 13:08:16,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112102432] [2021-03-26 13:08:16,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-26 13:08:16,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:08:16,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-26 13:08:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-26 13:08:16,591 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 59 [2021-03-26 13:08:16,593 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) [2021-03-26 13:08:16,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:08:16,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 59 [2021-03-26 13:08:16,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:08:16,633 INFO L129 PetriNetUnfolder]: 6/38 cut-off events. [2021-03-26 13:08:16,633 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-26 13:08:16,634 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. [2021-03-26 13:08:16,635 INFO L132 encePairwiseOnDemand]: 55/59 looper letters, 9 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2021-03-26 13:08:16,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 74 flow [2021-03-26 13:08:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-26 13:08:16,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-26 13:08:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2021-03-26 13:08:16,645 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7344632768361582 [2021-03-26 13:08:16,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2021-03-26 13:08:16,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2021-03-26 13:08:16,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:08:16,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2021-03-26 13:08:16,650 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) [2021-03-26 13:08:16,654 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) [2021-03-26 13:08:16,654 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) [2021-03-26 13:08:16,656 INFO L185 Difference]: Start difference. First operand has 21 places, 15 transitions, 42 flow. Second operand 3 states and 130 transitions. [2021-03-26 13:08:16,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 74 flow [2021-03-26 13:08:16,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-26 13:08:16,660 INFO L241 Difference]: Finished difference. Result has 20 places, 17 transitions, 53 flow [2021-03-26 13:08:16,661 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} [2021-03-26 13:08:16,662 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2021-03-26 13:08:16,662 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:08:16,663 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 17 transitions, 53 flow [2021-03-26 13:08:16,663 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 17 transitions, 53 flow [2021-03-26 13:08:16,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 17 transitions, 53 flow [2021-03-26 13:08:16,668 INFO L129 PetriNetUnfolder]: 1/26 cut-off events. [2021-03-26 13:08:16,668 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-26 13:08:16,669 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. [2021-03-26 13:08:16,669 INFO L142 LiptonReduction]: Number of co-enabled transitions 50 [2021-03-26 13:08:16,867 INFO L154 LiptonReduction]: Checked pairs total: 39 [2021-03-26 13:08:16,868 INFO L156 LiptonReduction]: Total number of compositions: 2 [2021-03-26 13:08:16,868 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 206 [2021-03-26 13:08:16,869 INFO L480 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 51 flow [2021-03-26 13:08:16,869 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) [2021-03-26 13:08:16,869 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:08:16,869 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:08:16,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 13:08:16,870 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:08:16,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:08:16,870 INFO L82 PathProgramCache]: Analyzing trace with hash 684196891, now seen corresponding path program 1 times [2021-03-26 13:08:16,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:08:16,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007069970] [2021-03-26 13:08:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:08:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:08:16,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:16,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:08:16,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:16,957 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:08:16,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:16,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:08:16,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:16,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:08:16,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:16,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:08:16,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:16,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 13:08:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:08:17,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007069970] [2021-03-26 13:08:17,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:08:17,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 13:08:17,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568214903] [2021-03-26 13:08:17,002 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-26 13:08:17,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:08:17,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-26 13:08:17,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-26 13:08:17,007 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 61 [2021-03-26 13:08:17,008 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) [2021-03-26 13:08:17,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:08:17,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 61 [2021-03-26 13:08:17,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:08:17,114 INFO L129 PetriNetUnfolder]: 9/45 cut-off events. [2021-03-26 13:08:17,114 INFO L130 PetriNetUnfolder]: For 23/26 co-relation queries the response was YES. [2021-03-26 13:08:17,115 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. [2021-03-26 13:08:17,115 INFO L132 encePairwiseOnDemand]: 53/61 looper letters, 10 selfloop transitions, 7 changer transitions 6/28 dead transitions. [2021-03-26 13:08:17,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 140 flow [2021-03-26 13:08:17,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:08:17,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:08:17,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 295 transitions. [2021-03-26 13:08:17,118 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6045081967213115 [2021-03-26 13:08:17,118 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 295 transitions. [2021-03-26 13:08:17,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 295 transitions. [2021-03-26 13:08:17,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:08:17,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 295 transitions. [2021-03-26 13:08:17,121 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) [2021-03-26 13:08:17,122 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) [2021-03-26 13:08:17,123 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) [2021-03-26 13:08:17,123 INFO L185 Difference]: Start difference. First operand has 19 places, 16 transitions, 51 flow. Second operand 8 states and 295 transitions. [2021-03-26 13:08:17,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 140 flow [2021-03-26 13:08:17,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 135 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-26 13:08:17,125 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 91 flow [2021-03-26 13:08:17,125 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} [2021-03-26 13:08:17,125 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 9 predicate places. [2021-03-26 13:08:17,126 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:08:17,126 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 20 transitions, 91 flow [2021-03-26 13:08:17,126 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 20 transitions, 91 flow [2021-03-26 13:08:17,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 27 places, 20 transitions, 91 flow [2021-03-26 13:08:17,130 INFO L129 PetriNetUnfolder]: 3/25 cut-off events. [2021-03-26 13:08:17,131 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-03-26 13:08:17,131 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. [2021-03-26 13:08:17,131 INFO L142 LiptonReduction]: Number of co-enabled transitions 40 [2021-03-26 13:08:17,369 INFO L154 LiptonReduction]: Checked pairs total: 23 [2021-03-26 13:08:17,369 INFO L156 LiptonReduction]: Total number of compositions: 7 [2021-03-26 13:08:17,370 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 244 [2021-03-26 13:08:17,371 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 91 flow [2021-03-26 13:08:17,372 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) [2021-03-26 13:08:17,372 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:08:17,372 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:08:17,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 13:08:17,373 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:08:17,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:08:17,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1661648301, now seen corresponding path program 1 times [2021-03-26 13:08:17,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:08:17,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765845984] [2021-03-26 13:08:17,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:08:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:08:17,446 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:17,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:08:17,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:17,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:08:17,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:17,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-26 13:08:17,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:17,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:08:17,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:17,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:08:17,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:08:17,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-26 13:08:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:08:17,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765845984] [2021-03-26 13:08:17,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:08:17,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 13:08:17,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813139294] [2021-03-26 13:08:17,522 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-26 13:08:17,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:08:17,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-26 13:08:17,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-26 13:08:17,525 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2021-03-26 13:08:17,526 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) [2021-03-26 13:08:17,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:08:17,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2021-03-26 13:08:17,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:08:17,622 INFO L129 PetriNetUnfolder]: 5/34 cut-off events. [2021-03-26 13:08:17,622 INFO L130 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2021-03-26 13:08:17,623 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. [2021-03-26 13:08:17,623 INFO L132 encePairwiseOnDemand]: 58/68 looper letters, 11 selfloop transitions, 7 changer transitions 3/25 dead transitions. [2021-03-26 13:08:17,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 170 flow [2021-03-26 13:08:17,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:08:17,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:08:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2021-03-26 13:08:17,626 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5404411764705882 [2021-03-26 13:08:17,626 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 294 transitions. [2021-03-26 13:08:17,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 294 transitions. [2021-03-26 13:08:17,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:08:17,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 294 transitions. [2021-03-26 13:08:17,627 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) [2021-03-26 13:08:17,628 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) [2021-03-26 13:08:17,629 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) [2021-03-26 13:08:17,629 INFO L185 Difference]: Start difference. First operand has 25 places, 18 transitions, 91 flow. Second operand 8 states and 294 transitions. [2021-03-26 13:08:17,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 170 flow [2021-03-26 13:08:17,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 136 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-26 13:08:17,631 INFO L241 Difference]: Finished difference. Result has 32 places, 20 transitions, 106 flow [2021-03-26 13:08:17,631 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} [2021-03-26 13:08:17,631 INFO L343 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2021-03-26 13:08:17,631 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:08:17,632 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 20 transitions, 106 flow [2021-03-26 13:08:17,632 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 32 places, 20 transitions, 106 flow [2021-03-26 13:08:17,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 20 transitions, 106 flow [2021-03-26 13:08:17,635 INFO L129 PetriNetUnfolder]: 2/24 cut-off events. [2021-03-26 13:08:17,635 INFO L130 PetriNetUnfolder]: For 23/29 co-relation queries the response was YES. [2021-03-26 13:08:17,636 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. [2021-03-26 13:08:17,636 INFO L142 LiptonReduction]: Number of co-enabled transitions 28 [2021-03-26 13:08:17,637 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:08:17,637 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:08:17,637 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 13:08:17,638 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 106 flow [2021-03-26 13:08:17,638 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) [2021-03-26 13:08:17,638 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:08:17,638 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:08:17,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 13:08:17,639 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:08:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:08:17,639 INFO L82 PathProgramCache]: Analyzing trace with hash -288995689, now seen corresponding path program 1 times [2021-03-26 13:08:17,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:08:17,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248073725] [2021-03-26 13:08:17,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:08:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 13:08:17,649 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 13:08:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-26 13:08:17,657 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-26 13:08:17,671 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-26 13:08:17,671 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-26 13:08:17,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 13:08:17,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 01:08:17 BasicIcfg [2021-03-26 13:08:17,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 13:08:17,693 INFO L168 Benchmark]: Toolchain (without parser) took 2749.67 ms. Allocated memory was 255.9 MB in the beginning and 392.2 MB in the end (delta: 136.3 MB). Free memory was 234.9 MB in the beginning and 344.1 MB in the end (delta: -109.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.0 GB. [2021-03-26 13:08:17,693 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 13:08:17,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.23 ms. Allocated memory was 255.9 MB in the beginning and 392.2 MB in the end (delta: 136.3 MB). Free memory was 234.9 MB in the beginning and 376.1 MB in the end (delta: -141.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-26 13:08:17,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.15 ms. Allocated memory is still 392.2 MB. Free memory was 376.1 MB in the beginning and 374.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 13:08:17,694 INFO L168 Benchmark]: Boogie Preprocessor took 25.80 ms. Allocated memory is still 392.2 MB. Free memory was 374.8 MB in the beginning and 373.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 13:08:17,695 INFO L168 Benchmark]: RCFGBuilder took 342.18 ms. Allocated memory is still 392.2 MB. Free memory was 373.7 MB in the beginning and 359.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-26 13:08:17,695 INFO L168 Benchmark]: TraceAbstraction took 2098.21 ms. Allocated memory is still 392.2 MB. Free memory was 359.3 MB in the beginning and 344.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.0 GB. [2021-03-26 13:08:17,697 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 255.9 MB. Free memory is still 237.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 239.23 ms. Allocated memory was 255.9 MB in the beginning and 392.2 MB in the end (delta: 136.3 MB). Free memory was 234.9 MB in the beginning and 376.1 MB in the end (delta: -141.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 34.15 ms. Allocated memory is still 392.2 MB. Free memory was 376.1 MB in the beginning and 374.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 25.80 ms. Allocated memory is still 392.2 MB. Free memory was 374.8 MB in the beginning and 373.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 342.18 ms. Allocated memory is still 392.2 MB. Free memory was 373.7 MB in the beginning and 359.7 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2098.21 ms. Allocated memory is still 392.2 MB. Free memory was 359.3 MB in the beginning and 344.1 MB in the end (delta: 15.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 650.6ms, 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: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 154, positive: 137, positive conditional: 137, positive unconditional: 0, negative: 17, negative conditional: 17, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.Independence Queries: [ total: 136, positive: 123, positive conditional: 0, positive unconditional: 123, 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: 136, positive: 123, positive conditional: 0, positive unconditional: 123, 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: 65, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 65, negative conditional: 0, negative unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 154, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 136, unknown conditional: 0, unknown unconditional: 136] , Statistics on independence cache: Total cache size (in pairs): 136, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 204.6ms, 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: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 29, positive: 24, positive conditional: 24, positive unconditional: 0, negative: 5, negative conditional: 5, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: UnionIndependenceRelation.Independence Queries: [ total: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 9, positive: 9, positive conditional: 0, positive unconditional: 9, 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: 29, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 9, unknown conditional: 0, unknown unconditional: 9] , Statistics on independence cache: Total cache size (in pairs): 145, Positive cache size: 132, Positive conditional cache size: 0, Positive unconditional cache size: 132, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 243.3ms, 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: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 23, positive: 23, positive conditional: 23, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 23, positive: 23, positive conditional: 2, positive unconditional: 21, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 23, positive: 23, positive conditional: 2, positive unconditional: 21, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 6, positive: 6, positive conditional: 1, positive unconditional: 5, 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: 1, positive unconditional: 16, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 6, unknown conditional: 1, unknown unconditional: 5] , Statistics on independence cache: Total cache size (in pairs): 151, Positive cache size: 138, Positive conditional cache size: 1, Positive unconditional cache size: 137, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Eliminated conditions: 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: 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: SemanticConditionEliminator.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] , SemanticConditionEliminator.Statistics on underlying relation: 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: 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): 151, Positive cache size: 138, Positive conditional cache size: 1, Positive unconditional cache size: 137, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Eliminated conditions: 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: 4.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 1993.8ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 305.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 726.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 11 SDslu, 23 SDs, 0 SdLazy, 173 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 123.0ms 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: 10.7ms SsaConstructionTime, 65.5ms SatisfiabilityAnalysisTime, 268.7ms 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...