/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 13:14:43,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 13:14:43,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 13:14:43,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 13:14:43,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 13:14:43,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 13:14:43,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 13:14:43,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 13:14:43,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 13:14:43,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 13:14:43,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 13:14:43,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 13:14:43,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 13:14:43,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 13:14:43,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 13:14:43,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 13:14:43,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 13:14:43,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 13:14:43,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 13:14:43,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 13:14:43,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 13:14:43,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 13:14:43,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 13:14:43,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 13:14:43,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-24 13:14:43,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 13:14:43,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 13:14:43,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 13:14:43,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 13:14:43,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 13:14:43,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 13:14:43,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 13:14:43,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 13:14:43,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 13:14:43,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 13:14:43,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 13:14:43,982 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-VariableLbe.epf [2021-03-24 13:14:44,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 13:14:44,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 13:14:44,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 13:14:44,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 13:14:44,012 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 13:14:44,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 13:14:44,012 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 13:14:44,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 13:14:44,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 13:14:44,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 13:14:44,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 13:14:44,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 13:14:44,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 13:14:44,013 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 13:14:44,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 13:14:44,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 13:14:44,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 13:14:44,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 13:14:44,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 13:14:44,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 13:14:44,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 13:14:44,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 13:14:44,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 13:14:44,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 13:14:44,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 13:14:44,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 13:14:44,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 13:14:44,015 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 13:14:44,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 13:14:44,015 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 13:14:44,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 13:14:44,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 13:14:44,319 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 13:14:44,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 13:14:44,320 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 13:14:44,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-03-24 13:14:44,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2cac521d/5b492adc6ac64c75bfa3bbdbcf2be047/FLAGfb3b5c170 [2021-03-24 13:14:44,711 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 13:14:44,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/simpleReturn.c [2021-03-24 13:14:44,712 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 13:14:44,712 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 13:14:44,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2cac521d/5b492adc6ac64c75bfa3bbdbcf2be047/FLAGfb3b5c170 [2021-03-24 13:14:44,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2cac521d/5b492adc6ac64c75bfa3bbdbcf2be047 [2021-03-24 13:14:44,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 13:14:44,757 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 13:14:44,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 13:14:44,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 13:14:44,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 13:14:44,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a62b431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44, skipping insertion in model container [2021-03-24 13:14:44,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 13:14:44,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 13:14:44,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 13:14:44,914 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 13:14:44,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 13:14:44,933 INFO L208 MainTranslator]: Completed translation [2021-03-24 13:14:44,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44 WrapperNode [2021-03-24 13:14:44,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 13:14:44,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 13:14:44,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 13:14:44,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 13:14:44,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 13:14:44,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 13:14:44,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 13:14:44,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 13:14:44,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (1/1) ... [2021-03-24 13:14:44,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 13:14:44,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 13:14:44,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 13:14:44,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 13:14:44,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (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 [2021-03-24 13:14:45,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-03-24 13:14:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 13:14:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure bar [2021-03-24 13:14:45,091 INFO L138 BoogieDeclarations]: Found implementation of procedure bar [2021-03-24 13:14:45,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 13:14:45,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 13:14:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 13:14:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 13:14:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-24 13:14:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 13:14:45,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 13:14:45,093 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 13:14:45,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 13:14:45,291 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-24 13:14:45,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:14:45 BoogieIcfgContainer [2021-03-24 13:14:45,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 13:14:45,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 13:14:45,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 13:14:45,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 13:14:45,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 01:14:44" (1/3) ... [2021-03-24 13:14:45,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c19f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:14:45, skipping insertion in model container [2021-03-24 13:14:45,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 01:14:44" (2/3) ... [2021-03-24 13:14:45,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18c19f7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 01:14:45, skipping insertion in model container [2021-03-24 13:14:45,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 01:14:45" (3/3) ... [2021-03-24 13:14:45,297 INFO L111 eAbstractionObserver]: Analyzing ICFG simpleReturn.c [2021-03-24 13:14:45,300 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 13:14:45,302 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 13:14:45,303 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 13:14:45,316 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,317 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,317 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,317 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,317 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,317 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#in~b.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,317 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,317 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,317 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,318 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,318 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,318 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,318 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,318 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,318 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,318 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,318 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,319 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,319 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,319 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,319 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,319 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,319 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,319 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,319 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,320 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,320 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,320 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,320 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,320 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,320 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,321 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,321 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,321 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,321 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,321 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,321 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,321 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,323 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,323 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,323 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,323 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,323 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~c~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,323 WARN L313 ript$VariableManager]: TermVariabe barThread1of1ForFork0_~b.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,324 WARN L313 ript$VariableManager]: TermVariabe |barThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 13:14:45,328 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-24 13:14:45,340 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-24 13:14:45,353 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 13:14:45,353 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 13:14:45,353 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 13:14:45,354 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 13:14:45,354 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 13:14:45,354 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 13:14:45,354 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 13:14:45,354 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 13:14:45,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 46 places, 42 transitions, 92 flow [2021-03-24 13:14:45,383 INFO L129 PetriNetUnfolder]: 0/41 cut-off events. [2021-03-24 13:14:45,383 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:14:45,384 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 41 events. 0/41 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 13:14:45,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 42 transitions, 92 flow [2021-03-24 13:14:45,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 31 transitions, 68 flow [2021-03-24 13:14:45,388 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 13:14:45,393 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 35 places, 31 transitions, 68 flow [2021-03-24 13:14:45,395 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 35 places, 31 transitions, 68 flow [2021-03-24 13:14:45,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 35 places, 31 transitions, 68 flow [2021-03-24 13:14:45,406 INFO L129 PetriNetUnfolder]: 0/31 cut-off events. [2021-03-24 13:14:45,406 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:14:45,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 31 events. 0/31 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 13:14:45,408 INFO L142 LiptonReduction]: Number of co-enabled transitions 42 [2021-03-24 13:14:45,969 INFO L154 LiptonReduction]: Checked pairs total: 24 [2021-03-24 13:14:45,969 INFO L156 LiptonReduction]: Total number of compositions: 20 [2021-03-24 13:14:45,971 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 584 [2021-03-24 13:14:45,977 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-24 13:14:45,977 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 13:14:45,977 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:14:45,978 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:14:45,978 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:14:45,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:14:45,981 INFO L82 PathProgramCache]: Analyzing trace with hash -197061448, now seen corresponding path program 1 times [2021-03-24 13:14:45,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:14:45,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534474384] [2021-03-24 13:14:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:14:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:14:46,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:14:46,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 13:14:46,116 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,117 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 13:14:46,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:14:46,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 13:14:46,138 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,138 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 13:14:46,146 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 13:14:46,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 13:14:46,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:14:46,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,175 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:14:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:14:46,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534474384] [2021-03-24 13:14:46,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:14:46,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 13:14:46,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662200162] [2021-03-24 13:14:46,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 13:14:46,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:14:46,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 13:14:46,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-03-24 13:14:46,201 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2021-03-24 13:14:46,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 28 flow. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 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) [2021-03-24 13:14:46,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:14:46,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2021-03-24 13:14:46,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:14:46,360 INFO L129 PetriNetUnfolder]: 1/19 cut-off events. [2021-03-24 13:14:46,360 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 13:14:46,361 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 19 events. 1/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 1 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 16. Up to 10 conditions per place. [2021-03-24 13:14:46,362 INFO L132 encePairwiseOnDemand]: 52/62 looper letters, 7 selfloop transitions, 4 changer transitions 6/17 dead transitions. [2021-03-24 13:14:46,362 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 77 flow [2021-03-24 13:14:46,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 13:14:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 13:14:46,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2021-03-24 13:14:46,371 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.26832844574780057 [2021-03-24 13:14:46,371 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 183 transitions. [2021-03-24 13:14:46,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 183 transitions. [2021-03-24 13:14:46,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:14:46,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 183 transitions. [2021-03-24 13:14:46,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 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) [2021-03-24 13:14:46,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 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) [2021-03-24 13:14:46,396 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 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) [2021-03-24 13:14:46,397 INFO L185 Difference]: Start difference. First operand has 15 places, 11 transitions, 28 flow. Second operand 11 states and 183 transitions. [2021-03-24 13:14:46,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 77 flow [2021-03-24 13:14:46,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 17 transitions, 71 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 13:14:46,401 INFO L241 Difference]: Finished difference. Result has 29 places, 11 transitions, 46 flow [2021-03-24 13:14:46,402 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=46, PETRI_PLACES=29, PETRI_TRANSITIONS=11} [2021-03-24 13:14:46,402 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 14 predicate places. [2021-03-24 13:14:46,402 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 11 transitions, 46 flow [2021-03-24 13:14:46,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 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) [2021-03-24 13:14:46,403 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:14:46,403 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:14:46,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 13:14:46,403 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:14:46,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:14:46,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1055935978, now seen corresponding path program 2 times [2021-03-24 13:14:46,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:14:46,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351200166] [2021-03-24 13:14:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:14:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:14:46,447 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,447 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:14:46,448 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,448 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 13:14:46,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 13:14:46,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:14:46,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:14:46,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,471 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 13:14:46,477 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 13:14:46,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 13:14:46,494 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:14:46,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:14:46,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:14:46,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351200166] [2021-03-24 13:14:46,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:14:46,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 13:14:46,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453054015] [2021-03-24 13:14:46,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 13:14:46,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:14:46,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 13:14:46,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-03-24 13:14:46,512 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2021-03-24 13:14:46,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 11 transitions, 46 flow. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 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) [2021-03-24 13:14:46,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:14:46,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2021-03-24 13:14:46,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:14:46,642 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-24 13:14:46,643 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 13:14:46,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 16 events. 0/16 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-24 13:14:46,643 INFO L132 encePairwiseOnDemand]: 52/62 looper letters, 6 selfloop transitions, 5 changer transitions 4/15 dead transitions. [2021-03-24 13:14:46,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 15 transitions, 93 flow [2021-03-24 13:14:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 13:14:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 13:14:46,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2021-03-24 13:14:46,644 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2653958944281525 [2021-03-24 13:14:46,644 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 181 transitions. [2021-03-24 13:14:46,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 181 transitions. [2021-03-24 13:14:46,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:14:46,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 181 transitions. [2021-03-24 13:14:46,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 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) [2021-03-24 13:14:46,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 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) [2021-03-24 13:14:46,647 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 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) [2021-03-24 13:14:46,647 INFO L185 Difference]: Start difference. First operand has 29 places, 11 transitions, 46 flow. Second operand 11 states and 181 transitions. [2021-03-24 13:14:46,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 15 transitions, 93 flow [2021-03-24 13:14:46,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 67 flow, removed 9 selfloop flow, removed 9 redundant places. [2021-03-24 13:14:46,648 INFO L241 Difference]: Finished difference. Result has 29 places, 11 transitions, 49 flow [2021-03-24 13:14:46,648 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=49, PETRI_PLACES=29, PETRI_TRANSITIONS=11} [2021-03-24 13:14:46,649 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 14 predicate places. [2021-03-24 13:14:46,649 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 11 transitions, 49 flow [2021-03-24 13:14:46,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 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) [2021-03-24 13:14:46,649 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 13:14:46,649 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 13:14:46,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 13:14:46,649 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 13:14:46,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 13:14:46,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1028230348, now seen corresponding path program 3 times [2021-03-24 13:14:46,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 13:14:46,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160527421] [2021-03-24 13:14:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 13:14:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 13:14:46,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 13:14:46,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 13:14:46,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 13:14:46,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:14:46,695 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,696 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:14:46,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 13:14:46,708 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 13:14:46,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,716 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 13:14:46,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 13:14:46,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 13:14:46,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 13:14:46,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 13:14:46,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160527421] [2021-03-24 13:14:46,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 13:14:46,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 13:14:46,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366250435] [2021-03-24 13:14:46,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 13:14:46,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 13:14:46,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 13:14:46,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-03-24 13:14:46,740 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 62 [2021-03-24 13:14:46,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 11 transitions, 49 flow. Second operand has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 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) [2021-03-24 13:14:46,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 13:14:46,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 62 [2021-03-24 13:14:46,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 13:14:46,859 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-24 13:14:46,860 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 13:14:46,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 11 events. 0/11 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-24 13:14:46,860 INFO L132 encePairwiseOnDemand]: 52/62 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2021-03-24 13:14:46,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 11 transitions, 74 flow [2021-03-24 13:14:46,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 13:14:46,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 13:14:46,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2021-03-24 13:14:46,861 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2595307917888563 [2021-03-24 13:14:46,861 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 177 transitions. [2021-03-24 13:14:46,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 177 transitions. [2021-03-24 13:14:46,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 13:14:46,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 177 transitions. [2021-03-24 13:14:46,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 16.09090909090909) internal successors, (177), 11 states have internal predecessors, (177), 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) [2021-03-24 13:14:46,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 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) [2021-03-24 13:14:46,863 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 62.0) internal successors, (744), 12 states have internal predecessors, (744), 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) [2021-03-24 13:14:46,863 INFO L185 Difference]: Start difference. First operand has 29 places, 11 transitions, 49 flow. Second operand 11 states and 177 transitions. [2021-03-24 13:14:46,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 11 transitions, 74 flow [2021-03-24 13:14:46,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 11 transitions, 52 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-03-24 13:14:46,864 INFO L241 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2021-03-24 13:14:46,864 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2021-03-24 13:14:46,864 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 10 predicate places. [2021-03-24 13:14:46,864 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2021-03-24 13:14:46,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 16.0) internal successors, (176), 11 states have internal predecessors, (176), 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) [2021-03-24 13:14:46,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 13:14:46,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 01:14:46 BasicIcfg [2021-03-24 13:14:46,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 13:14:46,867 INFO L168 Benchmark]: Toolchain (without parser) took 2110.65 ms. Allocated memory is still 369.1 MB. Free memory was 332.0 MB in the beginning and 235.5 MB in the end (delta: 96.4 MB). Peak memory consumption was 96.5 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:46,868 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 369.1 MB. Free memory was 350.1 MB in the beginning and 350.1 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:14:46,868 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.43 ms. Allocated memory is still 369.1 MB. Free memory was 331.7 MB in the beginning and 352.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:46,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.31 ms. Allocated memory is still 369.1 MB. Free memory was 352.1 MB in the beginning and 350.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 13:14:46,869 INFO L168 Benchmark]: Boogie Preprocessor took 26.13 ms. Allocated memory is still 369.1 MB. Free memory was 350.0 MB in the beginning and 348.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:46,869 INFO L168 Benchmark]: RCFGBuilder took 307.43 ms. Allocated memory is still 369.1 MB. Free memory was 348.9 MB in the beginning and 332.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:46,869 INFO L168 Benchmark]: TraceAbstraction took 1573.91 ms. Allocated memory is still 369.1 MB. Free memory was 332.1 MB in the beginning and 235.5 MB in the end (delta: 96.6 MB). Peak memory consumption was 97.6 MB. Max. memory is 16.0 GB. [2021-03-24 13:14:46,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 369.1 MB. Free memory was 350.1 MB in the beginning and 350.1 MB in the end (delta: 70.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 175.43 ms. Allocated memory is still 369.1 MB. Free memory was 331.7 MB in the beginning and 352.1 MB in the end (delta: -20.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.31 ms. Allocated memory is still 369.1 MB. Free memory was 352.1 MB in the beginning and 350.0 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.13 ms. Allocated memory is still 369.1 MB. Free memory was 350.0 MB in the beginning and 348.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 307.43 ms. Allocated memory is still 369.1 MB. Free memory was 348.9 MB in the beginning and 332.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1573.91 ms. Allocated memory is still 369.1 MB. Free memory was 332.1 MB in the beginning and 235.5 MB in the end (delta: 96.6 MB). Peak memory consumption was 97.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 574.3ms, 35 PlacesBefore, 15 PlacesAfterwards, 31 TransitionsBefore, 11 TransitionsAfterwards, 42 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 20 TotalNumberOfCompositions, 24 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 24, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 19, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 19, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 24, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 19, unknown conditional: 0, unknown unconditional: 19] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 30]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.9ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1514.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 468.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 619.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 47 SDslu, 38 SDs, 0 SdLazy, 245 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 412.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=2, InterpolantAutomatonStates: 33, 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: 6.3ms SsaConstructionTime, 48.7ms SatisfiabilityAnalysisTime, 291.4ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 300 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...