/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/pthreadReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-11 18:41:34,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-11 18:41:34,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-11 18:41:34,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-11 18:41:34,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-11 18:41:34,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-11 18:41:34,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-11 18:41:34,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-11 18:41:34,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-11 18:41:34,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-11 18:41:34,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-11 18:41:34,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-11 18:41:34,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-11 18:41:34,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-11 18:41:34,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-11 18:41:34,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-11 18:41:34,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-11 18:41:34,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-11 18:41:34,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-11 18:41:34,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-11 18:41:34,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-11 18:41:34,822 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-11 18:41:34,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-11 18:41:34,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-11 18:41:34,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-11 18:41:34,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-11 18:41:34,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-11 18:41:34,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-11 18:41:34,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-11 18:41:34,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-11 18:41:34,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-11 18:41:34,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-11 18:41:34,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-11 18:41:34,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-11 18:41:34,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-11 18:41:34,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-11 18:41:34,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-11 18:41:34,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-11 18:41:34,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-11 18:41:34,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-11 18:41:34,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-11 18:41:34,844 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 [2021-06-11 18:41:34,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-11 18:41:34,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-11 18:41:34,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-11 18:41:34,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-11 18:41:34,900 INFO L138 SettingsManager]: * Use SBE=true [2021-06-11 18:41:34,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-11 18:41:34,900 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-11 18:41:34,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-11 18:41:34,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-11 18:41:34,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-11 18:41:34,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-11 18:41:34,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-11 18:41:34,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-11 18:41:34,901 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-11 18:41:34,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-11 18:41:34,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-11 18:41:34,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-11 18:41:34,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-11 18:41:34,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-11 18:41:34,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-11 18:41:34,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-11 18:41:34,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-11 18:41:34,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-11 18:41:34,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-11 18:41:34,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-11 18:41:34,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-11 18:41:34,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-11 18:41:34,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-06-11 18:41:34,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-11 18:41:34,903 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-11 18:41:34,903 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-11 18:41:35,237 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-11 18:41:35,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-11 18:41:35,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-11 18:41:35,267 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-11 18:41:35,267 INFO L275 PluginConnector]: CDTParser initialized [2021-06-11 18:41:35,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-06-11 18:41:35,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8370ca028/6616557c8c2849e283b8a1f0a0e5d44e/FLAG60473b7d0 [2021-06-11 18:41:35,751 INFO L306 CDTParser]: Found 1 translation units. [2021-06-11 18:41:35,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadReturn.c [2021-06-11 18:41:35,751 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-11 18:41:35,752 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-11 18:41:35,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8370ca028/6616557c8c2849e283b8a1f0a0e5d44e/FLAG60473b7d0 [2021-06-11 18:41:35,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8370ca028/6616557c8c2849e283b8a1f0a0e5d44e [2021-06-11 18:41:35,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-11 18:41:35,811 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-11 18:41:35,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-11 18:41:35,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-11 18:41:35,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-11 18:41:35,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 06:41:35" (1/1) ... [2021-06-11 18:41:35,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ea73c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:35, skipping insertion in model container [2021-06-11 18:41:35,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.06 06:41:35" (1/1) ... [2021-06-11 18:41:35,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-11 18:41:35,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-11 18:41:35,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 18:41:36,001 INFO L203 MainTranslator]: Completed pre-run [2021-06-11 18:41:36,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-11 18:41:36,034 INFO L208 MainTranslator]: Completed translation [2021-06-11 18:41:36,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36 WrapperNode [2021-06-11 18:41:36,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-11 18:41:36,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-11 18:41:36,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-11 18:41:36,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-11 18:41:36,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (1/1) ... [2021-06-11 18:41:36,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (1/1) ... [2021-06-11 18:41:36,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-11 18:41:36,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-11 18:41:36,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-11 18:41:36,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-11 18:41:36,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (1/1) ... [2021-06-11 18:41:36,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (1/1) ... [2021-06-11 18:41:36,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (1/1) ... [2021-06-11 18:41:36,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (1/1) ... [2021-06-11 18:41:36,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (1/1) ... [2021-06-11 18:41:36,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (1/1) ... [2021-06-11 18:41:36,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (1/1) ... [2021-06-11 18:41:36,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-11 18:41:36,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-11 18:41:36,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-11 18:41:36,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-11 18:41:36,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (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 18:41:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-06-11 18:41:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-11 18:41:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-11 18:41:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-11 18:41:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-11 18:41:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-06-11 18:41:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-11 18:41:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure myThread [2021-06-11 18:41:36,169 INFO L138 BoogieDeclarations]: Found implementation of procedure myThread [2021-06-11 18:41:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-11 18:41:36,170 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 18:41:36,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-11 18:41:36,424 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-11 18:41:36,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:41:36 BoogieIcfgContainer [2021-06-11 18:41:36,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-11 18:41:36,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-11 18:41:36,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-11 18:41:36,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-11 18:41:36,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.06 06:41:35" (1/3) ... [2021-06-11 18:41:36,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b56b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:41:36, skipping insertion in model container [2021-06-11 18:41:36,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.06 06:41:36" (2/3) ... [2021-06-11 18:41:36,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b56b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.06 06:41:36, skipping insertion in model container [2021-06-11 18:41:36,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.06 06:41:36" (3/3) ... [2021-06-11 18:41:36,432 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadReturn.c [2021-06-11 18:41:36,436 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-11 18:41:36,440 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-11 18:41:36,440 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-11 18:41:36,456 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:41:36,456 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:41:36,457 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:41:36,457 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:41:36,458 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:41:36,458 WARN L313 ript$VariableManager]: TermVariabe |myThreadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-11 18:41:36,465 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-11 18:41:36,481 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-11 18:41:36,499 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-11 18:41:36,500 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-11 18:41:36,500 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-11 18:41:36,500 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-11 18:41:36,500 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-11 18:41:36,500 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-11 18:41:36,500 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-11 18:41:36,500 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-11 18:41:36,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 66 flow [2021-06-11 18:41:36,530 INFO L129 PetriNetUnfolder]: 0/28 cut-off events. [2021-06-11 18:41:36,531 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 18:41:36,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 28 events. 0/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 18:41:36,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 66 flow [2021-06-11 18:41:36,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 44 flow [2021-06-11 18:41:36,537 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:41:36,550 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 19 transitions, 44 flow [2021-06-11 18:41:36,553 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 19 transitions, 44 flow [2021-06-11 18:41:36,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 23 places, 19 transitions, 44 flow [2021-06-11 18:41:36,561 INFO L129 PetriNetUnfolder]: 0/19 cut-off events. [2021-06-11 18:41:36,561 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 18:41:36,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 19 events. 0/19 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-11 18:41:36,563 INFO L151 LiptonReduction]: Number of co-enabled transitions 8 [2021-06-11 18:41:36,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:36,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:36,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:36,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-11 18:41:36,801 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-11 18:41:36,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:36,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:37,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:37,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,198 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,199 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 18:41:37,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:41:37,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,212 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,213 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 18:41:37,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-11 18:41:37,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,217 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-11 18:41:37,222 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 18:41:37,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:41:37,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:41:37,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-06-11 18:41:37,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:37,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:37,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:37,596 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-11 18:41:37,600 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,603 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:37,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:37,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:37,609 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-11 18:41:37,611 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:37,613 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-11 18:41:37,613 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:31, output treesize:1 [2021-06-11 18:41:37,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:41:37,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:41:37,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 18:41:37,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,981 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:41:37,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 18:41:37,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,987 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 18:41:37,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:41:37,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,989 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,992 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:41:37,993 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 18:41:37,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,995 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-06-11 18:41:37,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 18:41:37,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:37,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:37,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-06-11 18:41:37,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-06-11 18:41:37,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:38,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-06-11 18:41:38,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-06-11 18:41:38,007 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:38,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:38,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,009 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:38,010 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-11 18:41:38,023 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:38,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:38,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:38,028 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-11 18:41:38,039 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:38,044 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:38,046 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-11 18:41:38,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-11 18:41:38,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:38,048 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:38,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-11 18:41:38,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-11 18:41:38,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-11 18:41:38,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-11 18:41:38,054 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-11 18:41:38,054 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-11 18:41:38,054 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:58, output treesize:28 [2021-06-11 18:41:38,057 INFO L163 LiptonReduction]: Checked pairs total: 4 [2021-06-11 18:41:38,058 INFO L165 LiptonReduction]: Total number of compositions: 13 [2021-06-11 18:41:38,060 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1524 [2021-06-11 18:41:38,067 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-06-11 18:41:38,067 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-11 18:41:38,068 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-11 18:41:38,068 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-11 18:41:38,068 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-11 18:41:38,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-11 18:41:38,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1201907998, now seen corresponding path program 1 times [2021-06-11 18:41:38,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-11 18:41:38,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038426416] [2021-06-11 18:41:38,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-11 18:41:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-11 18:41:38,203 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,204 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-11 18:41:38,206 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-11 18:41:38,207 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-06-11 18:41:38,223 INFO L142 QuantifierPusher]: treesize reduction 17, result has 54.1 percent of original size [2021-06-11 18:41:38,224 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-11 18:41:38,257 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 18:41:38,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038426416] [2021-06-11 18:41:38,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-11 18:41:38,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-11 18:41:38,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749609251] [2021-06-11 18:41:38,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-11 18:41:38,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-11 18:41:38,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-11 18:41:38,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-11 18:41:38,278 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 42 [2021-06-11 18:41:38,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 6 transitions, 18 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 18:41:38,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-11 18:41:38,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 42 [2021-06-11 18:41:38,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-11 18:41:38,330 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-06-11 18:41:38,330 INFO L130 PetriNetUnfolder]: For 3/4 co-relation queries the response was YES. [2021-06-11 18:41:38,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 5 events. 0/5 cut-off events. For 3/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 2/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-06-11 18:41:38,331 INFO L132 encePairwiseOnDemand]: 39/42 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-06-11 18:41:38,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 5 transitions, 24 flow [2021-06-11 18:41:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-11 18:41:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-11 18:41:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2021-06-11 18:41:38,341 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2021-06-11 18:41:38,342 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2021-06-11 18:41:38,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2021-06-11 18:41:38,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-11 18:41:38,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2021-06-11 18:41:38,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 18:41:38,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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 18:41:38,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 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 18:41:38,358 INFO L185 Difference]: Start difference. First operand has 10 places, 6 transitions, 18 flow. Second operand 4 states and 117 transitions. [2021-06-11 18:41:38,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 5 transitions, 24 flow [2021-06-11 18:41:38,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 5 transitions, 20 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-11 18:41:38,361 INFO L241 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2021-06-11 18:41:38,363 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2021-06-11 18:41:38,364 INFO L343 CegarLoopForPetriNet]: 10 programPoint places, 0 predicate places. [2021-06-11 18:41:38,364 INFO L173 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-06-11 18:41:38,364 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 10 places, 0 transitions, 0 flow [2021-06-11 18:41:38,365 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 10 places, 0 transitions, 0 flow [2021-06-11 18:41:38,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-06-11 18:41:38,366 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-11 18:41:38,366 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-11 18:41:38,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-06-11 18:41:38,366 INFO L151 LiptonReduction]: Number of co-enabled transitions 0 [2021-06-11 18:41:38,366 INFO L163 LiptonReduction]: Checked pairs total: 0 [2021-06-11 18:41:38,366 INFO L165 LiptonReduction]: Total number of compositions: 0 [2021-06-11 18:41:38,366 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2 [2021-06-11 18:41:38,368 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-06-11 18:41:38,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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 18:41:38,371 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-11 18:41:38,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.06 06:41:38 BasicIcfg [2021-06-11 18:41:38,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-11 18:41:38,377 INFO L168 Benchmark]: Toolchain (without parser) took 2565.18 ms. Allocated memory is still 346.0 MB. Free memory was 308.2 MB in the beginning and 323.2 MB in the end (delta: -15.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:41:38,385 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 346.0 MB. Free memory was 326.4 MB in the beginning and 326.3 MB in the end (delta: 70.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:41:38,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.10 ms. Allocated memory is still 346.0 MB. Free memory was 308.0 MB in the beginning and 329.6 MB in the end (delta: -21.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-11 18:41:38,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 346.0 MB. Free memory was 329.6 MB in the beginning and 328.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-11 18:41:38,387 INFO L168 Benchmark]: Boogie Preprocessor took 14.87 ms. Allocated memory is still 346.0 MB. Free memory was 328.6 MB in the beginning and 327.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:41:38,388 INFO L168 Benchmark]: RCFGBuilder took 324.29 ms. Allocated memory is still 346.0 MB. Free memory was 327.3 MB in the beginning and 310.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-11 18:41:38,390 INFO L168 Benchmark]: TraceAbstraction took 1949.09 ms. Allocated memory is still 346.0 MB. Free memory was 310.8 MB in the beginning and 323.2 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-11 18:41:38,396 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 346.0 MB. Free memory was 326.4 MB in the beginning and 326.3 MB in the end (delta: 70.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 221.10 ms. Allocated memory is still 346.0 MB. Free memory was 308.0 MB in the beginning and 329.6 MB in the end (delta: -21.7 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.93 ms. Allocated memory is still 346.0 MB. Free memory was 329.6 MB in the beginning and 328.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.87 ms. Allocated memory is still 346.0 MB. Free memory was 328.6 MB in the beginning and 327.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 324.29 ms. Allocated memory is still 346.0 MB. Free memory was 327.3 MB in the beginning and 310.8 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1949.09 ms. Allocated memory is still 346.0 MB. Free memory was 310.8 MB in the beginning and 323.2 MB in the end (delta: -12.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1504.7ms, 23 PlacesBefore, 10 PlacesAfterwards, 19 TransitionsBefore, 6 TransitionsAfterwards, 8 CoEnabledTransitionPairs, 5 FixpointIterations, 11 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 13 TotalNumberOfCompositions, 4 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 4, positive conditional: 4, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 4, positive: 4, positive conditional: 0, positive unconditional: 4, 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: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 4, unknown conditional: 0, unknown unconditional: 4] , Statistics on independence cache: Total cache size (in pairs): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 10 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 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): 4, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 - PositiveResult [Line: 31]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1876.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 90.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1564.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 4, 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: 4.7ms SsaConstructionTime, 24.6ms SatisfiabilityAnalysisTime, 93.1ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...