/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/pthreadExitSafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-26 13:09:06,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-26 13:09:06,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-26 13:09:06,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-26 13:09:06,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-26 13:09:06,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-26 13:09:06,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-26 13:09:06,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-26 13:09:06,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-26 13:09:06,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-26 13:09:06,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-26 13:09:06,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-26 13:09:06,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-26 13:09:06,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-26 13:09:06,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-26 13:09:06,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-26 13:09:06,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-26 13:09:06,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-26 13:09:06,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-26 13:09:06,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-26 13:09:06,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-26 13:09:06,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-26 13:09:06,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-26 13:09:06,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-26 13:09:06,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-26 13:09:06,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-26 13:09:06,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-26 13:09:06,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-26 13:09:06,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-26 13:09:06,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-26 13:09:06,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-26 13:09:06,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-26 13:09:06,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-26 13:09:06,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-26 13:09:06,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-26 13:09:06,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-26 13:09:06,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-26 13:09:06,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-26 13:09:06,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-26 13:09:06,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-26 13:09:06,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-26 13:09:06,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbeWithDisjunctivePredicates.epf [2021-03-26 13:09:07,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-26 13:09:07,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-26 13:09:07,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-26 13:09:07,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-26 13:09:07,013 INFO L138 SettingsManager]: * Use SBE=true [2021-03-26 13:09:07,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-26 13:09:07,013 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-26 13:09:07,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-26 13:09:07,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-26 13:09:07,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-26 13:09:07,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-26 13:09:07,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-26 13:09:07,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-26 13:09:07,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-26 13:09:07,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-26 13:09:07,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-26 13:09:07,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-26 13:09:07,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-26 13:09:07,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-26 13:09:07,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-26 13:09:07,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-26 13:09:07,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:09:07,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-26 13:09:07,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-26 13:09:07,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-26 13:09:07,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-26 13:09:07,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-26 13:09:07,017 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=SEMANTIC_BASED_MOVER_CHECK_WITH_PREDICATES_DISJUNCTIVE [2021-03-26 13:09:07,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-26 13:09:07,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-26 13:09:07,018 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-26 13:09:07,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-26 13:09:07,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-26 13:09:07,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-26 13:09:07,403 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-26 13:09:07,403 INFO L275 PluginConnector]: CDTParser initialized [2021-03-26 13:09:07,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-03-26 13:09:07,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5614ee738/c9c28f54d84b4fbbb57b27b048c54a92/FLAGaf926312d [2021-03-26 13:09:07,983 INFO L306 CDTParser]: Found 1 translation units. [2021-03-26 13:09:07,983 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-03-26 13:09:07,983 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-26 13:09:07,983 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-26 13:09:08,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5614ee738/c9c28f54d84b4fbbb57b27b048c54a92/FLAGaf926312d [2021-03-26 13:09:08,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5614ee738/c9c28f54d84b4fbbb57b27b048c54a92 [2021-03-26 13:09:08,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-26 13:09:08,482 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-26 13:09:08,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-26 13:09:08,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-26 13:09:08,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-26 13:09:08,487 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c1cc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08, skipping insertion in model container [2021-03-26 13:09:08,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-26 13:09:08,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-26 13:09:08,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 13:09:08,638 INFO L203 MainTranslator]: Completed pre-run [2021-03-26 13:09:08,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-26 13:09:08,656 INFO L208 MainTranslator]: Completed translation [2021-03-26 13:09:08,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08 WrapperNode [2021-03-26 13:09:08,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-26 13:09:08,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-26 13:09:08,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-26 13:09:08,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-26 13:09:08,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-26 13:09:08,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-26 13:09:08,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-26 13:09:08,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-26 13:09:08,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... [2021-03-26 13:09:08,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-26 13:09:08,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-26 13:09:08,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-26 13:09:08,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-26 13:09:08,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-26 13:09:08,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-03-26 13:09:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-26 13:09:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-26 13:09:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-26 13:09:08,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-26 13:09:08,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-26 13:09:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-26 13:09:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-26 13:09:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-26 13:09:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-26 13:09:08,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-26 13:09:08,778 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-26 13:09:09,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-26 13:09:09,154 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-26 13:09:09,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:09:09 BoogieIcfgContainer [2021-03-26 13:09:09,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-26 13:09:09,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-26 13:09:09,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-26 13:09:09,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-26 13:09:09,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.03 01:09:08" (1/3) ... [2021-03-26 13:09:09,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21de23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:09:09, skipping insertion in model container [2021-03-26 13:09:09,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.03 01:09:08" (2/3) ... [2021-03-26 13:09:09,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21de23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.03 01:09:09, skipping insertion in model container [2021-03-26 13:09:09,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.03 01:09:09" (3/3) ... [2021-03-26 13:09:09,162 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitSafe.c [2021-03-26 13:09:09,170 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-26 13:09:09,174 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-26 13:09:09,175 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-26 13:09:09,211 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,211 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,211 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,211 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,212 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,212 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,212 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,212 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,213 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,213 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,214 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,214 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,215 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,215 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,215 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,215 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,215 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,216 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,216 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,216 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,216 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,216 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,216 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,216 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,217 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,217 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,217 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,217 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,217 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,218 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,218 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,218 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,218 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,218 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,219 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,219 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,220 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,220 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,220 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,220 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,220 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,220 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,220 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,221 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,223 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,223 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,223 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,223 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,224 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,224 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,224 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,224 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-26 13:09:09,238 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-26 13:09:09,254 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-26 13:09:09,283 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-26 13:09:09,283 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-26 13:09:09,283 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-26 13:09:09,283 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-26 13:09:09,283 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-26 13:09:09,283 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-26 13:09:09,283 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-26 13:09:09,283 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-26 13:09:09,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 94 flow [2021-03-26 13:09:09,335 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-03-26 13:09:09,335 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 13:09:09,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 42 events. 0/42 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. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 13:09:09,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 94 flow [2021-03-26 13:09:09,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 70 flow [2021-03-26 13:09:09,351 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:09:09,368 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 32 transitions, 70 flow [2021-03-26 13:09:09,372 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 32 transitions, 70 flow [2021-03-26 13:09:09,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 70 flow [2021-03-26 13:09:09,393 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-26 13:09:09,393 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 13:09:09,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 32 events. 0/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-26 13:09:09,396 INFO L142 LiptonReduction]: Number of co-enabled transitions 54 [2021-03-26 13:09:10,670 INFO L154 LiptonReduction]: Checked pairs total: 32 [2021-03-26 13:09:10,670 INFO L156 LiptonReduction]: Total number of compositions: 21 [2021-03-26 13:09:10,672 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1323 [2021-03-26 13:09:10,686 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-26 13:09:10,686 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 13:09:10,686 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:09:10,687 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:09:10,687 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:09:10,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:09:10,693 INFO L82 PathProgramCache]: Analyzing trace with hash -25287200, now seen corresponding path program 1 times [2021-03-26 13:09:10,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:09:10,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534222721] [2021-03-26 13:09:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:09:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:09:10,910 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:10,911 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:09:10,915 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:10,916 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:09:10,928 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:10,929 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:09:10,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:10,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:10,954 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-03-26 13:09:10,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-26 13:09:10,966 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:10,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:10,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:10,984 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:10,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:10,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:11,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:11,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:09:11,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:11,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:09:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:09:11,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534222721] [2021-03-26 13:09:11,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:09:11,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-26 13:09:11,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905259673] [2021-03-26 13:09:11,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:09:11,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:09:11,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:09:11,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:09:11,067 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2021-03-26 13:09:11,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 28 flow. Second operand has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:11,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:09:11,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2021-03-26 13:09:11,070 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:09:11,320 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-03-26 13:09:11,320 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 13:09:11,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 24. Up to 12 conditions per place. [2021-03-26 13:09:11,322 INFO L132 encePairwiseOnDemand]: 54/64 looper letters, 8 selfloop transitions, 5 changer transitions 6/19 dead transitions. [2021-03-26 13:09:11,322 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 85 flow [2021-03-26 13:09:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-26 13:09:11,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-26 13:09:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2021-03-26 13:09:11,334 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2315340909090909 [2021-03-26 13:09:11,334 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 163 transitions. [2021-03-26 13:09:11,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 163 transitions. [2021-03-26 13:09:11,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:09:11,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 163 transitions. [2021-03-26 13:09:11,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:11,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:11,345 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:11,346 INFO L185 Difference]: Start difference. First operand has 15 places, 11 transitions, 28 flow. Second operand 11 states and 163 transitions. [2021-03-26 13:09:11,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 85 flow [2021-03-26 13:09:11,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 79 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-26 13:09:11,350 INFO L241 Difference]: Finished difference. Result has 30 places, 13 transitions, 57 flow [2021-03-26 13:09:11,352 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=57, PETRI_PLACES=30, PETRI_TRANSITIONS=13} [2021-03-26 13:09:11,352 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 15 predicate places. [2021-03-26 13:09:11,353 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:09:11,353 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 13 transitions, 57 flow [2021-03-26 13:09:11,353 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 13 transitions, 57 flow [2021-03-26 13:09:11,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 24 places, 13 transitions, 57 flow [2021-03-26 13:09:11,357 INFO L129 PetriNetUnfolder]: 1/15 cut-off events. [2021-03-26 13:09:11,357 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-26 13:09:11,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 15 events. 1/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 32. Up to 5 conditions per place. [2021-03-26 13:09:11,358 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-26 13:09:11,654 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-03-26 13:09:11,880 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:09:11,880 INFO L156 LiptonReduction]: Total number of compositions: 5 [2021-03-26 13:09:11,881 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 528 [2021-03-26 13:09:11,882 INFO L480 AbstractCegarLoop]: Abstraction has has 21 places, 10 transitions, 55 flow [2021-03-26 13:09:11,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:11,882 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:09:11,882 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:09:11,882 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-26 13:09:11,883 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:09:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:09:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash 830019454, now seen corresponding path program 2 times [2021-03-26 13:09:11,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:09:11,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701782276] [2021-03-26 13:09:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:09:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:09:11,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:11,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-26 13:09:11,969 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:11,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:09:11,978 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:11,979 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:09:11,988 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-26 13:09:11,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-26 13:09:11,997 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-03-26 13:09:11,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-26 13:09:12,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,007 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:12,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:12,037 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:12,050 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,050 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-26 13:09:12,060 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-26 13:09:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:09:12,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701782276] [2021-03-26 13:09:12,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:09:12,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-26 13:09:12,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107034502] [2021-03-26 13:09:12,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-26 13:09:12,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:09:12,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-26 13:09:12,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-26 13:09:12,075 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 69 [2021-03-26 13:09:12,075 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 10 transitions, 55 flow. Second operand has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:09:12,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 69 [2021-03-26 13:09:12,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:09:12,249 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-03-26 13:09:12,250 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-03-26 13:09:12,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 14 events. 1/14 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 18 event pairs, 1 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 46. Up to 8 conditions per place. [2021-03-26 13:09:12,250 INFO L132 encePairwiseOnDemand]: 61/69 looper letters, 4 selfloop transitions, 3 changer transitions 5/12 dead transitions. [2021-03-26 13:09:12,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 12 transitions, 90 flow [2021-03-26 13:09:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-26 13:09:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-26 13:09:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2021-03-26 13:09:12,252 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.21195652173913043 [2021-03-26 13:09:12,252 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 117 transitions. [2021-03-26 13:09:12,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 117 transitions. [2021-03-26 13:09:12,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:09:12,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 117 transitions. [2021-03-26 13:09:12,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 14.625) internal successors, (117), 8 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) [2021-03-26 13:09:12,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,255 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 69.0) internal successors, (621), 9 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,255 INFO L185 Difference]: Start difference. First operand has 21 places, 10 transitions, 55 flow. Second operand 8 states and 117 transitions. [2021-03-26 13:09:12,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 12 transitions, 90 flow [2021-03-26 13:09:12,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 71 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-26 13:09:12,256 INFO L241 Difference]: Finished difference. Result has 23 places, 7 transitions, 34 flow [2021-03-26 13:09:12,256 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=34, PETRI_PLACES=23, PETRI_TRANSITIONS=7} [2021-03-26 13:09:12,257 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 8 predicate places. [2021-03-26 13:09:12,257 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:09:12,257 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 23 places, 7 transitions, 34 flow [2021-03-26 13:09:12,257 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 23 places, 7 transitions, 34 flow [2021-03-26 13:09:12,258 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 17 places, 7 transitions, 34 flow [2021-03-26 13:09:12,260 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2021-03-26 13:09:12,260 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 13:09:12,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 7 events. 0/7 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 1 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 13:09:12,260 INFO L142 LiptonReduction]: Number of co-enabled transitions 2 [2021-03-26 13:09:12,330 INFO L154 LiptonReduction]: Checked pairs total: 1 [2021-03-26 13:09:12,330 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-26 13:09:12,331 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 73 [2021-03-26 13:09:12,331 INFO L480 AbstractCegarLoop]: Abstraction has has 16 places, 6 transitions, 32 flow [2021-03-26 13:09:12,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,332 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:09:12,332 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-26 13:09:12,332 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-26 13:09:12,332 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:09:12,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:09:12,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1211829985, now seen corresponding path program 1 times [2021-03-26 13:09:12,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:09:12,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272343592] [2021-03-26 13:09:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:09:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:09:12,373 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:09:12,380 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,381 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:09:12,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:09:12,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,395 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:12,403 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:12,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:09:12,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272343592] [2021-03-26 13:09:12,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:09:12,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-26 13:09:12,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389979536] [2021-03-26 13:09:12,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-26 13:09:12,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:09:12,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-26 13:09:12,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-03-26 13:09:12,424 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 70 [2021-03-26 13:09:12,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 6 transitions, 32 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:09:12,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 70 [2021-03-26 13:09:12,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:09:12,480 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 13:09:12,480 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-26 13:09:12,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 6 events. 0/6 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 13:09:12,481 INFO L132 encePairwiseOnDemand]: 66/70 looper letters, 2 selfloop transitions, 4 changer transitions 0/6 dead transitions. [2021-03-26 13:09:12,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 6 transitions, 44 flow [2021-03-26 13:09:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-26 13:09:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-03-26 13:09:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 5 states and 111 transitions. [2021-03-26 13:09:12,484 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.3171428571428571 [2021-03-26 13:09:12,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 111 transitions. [2021-03-26 13:09:12,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 111 transitions. [2021-03-26 13:09:12,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:09:12,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 111 transitions. [2021-03-26 13:09:12,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,489 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 70.0) internal successors, (420), 6 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,489 INFO L185 Difference]: Start difference. First operand has 16 places, 6 transitions, 32 flow. Second operand 5 states and 111 transitions. [2021-03-26 13:09:12,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 6 transitions, 44 flow [2021-03-26 13:09:12,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 6 transitions, 28 flow, removed 3 selfloop flow, removed 8 redundant places. [2021-03-26 13:09:12,491 INFO L241 Difference]: Finished difference. Result has 13 places, 6 transitions, 24 flow [2021-03-26 13:09:12,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=24, PETRI_PLACES=13, PETRI_TRANSITIONS=6} [2021-03-26 13:09:12,492 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2021-03-26 13:09:12,492 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:09:12,492 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 6 transitions, 24 flow [2021-03-26 13:09:12,493 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 6 transitions, 24 flow [2021-03-26 13:09:12,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 13 places, 6 transitions, 24 flow [2021-03-26 13:09:12,496 INFO L129 PetriNetUnfolder]: 0/6 cut-off events. [2021-03-26 13:09:12,496 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:09:12,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 6 events. 0/6 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 0/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 13:09:12,496 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 13:09:12,498 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:09:12,498 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:09:12,498 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 6 [2021-03-26 13:09:12,501 INFO L480 AbstractCegarLoop]: Abstraction has has 13 places, 6 transitions, 24 flow [2021-03-26 13:09:12,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,502 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-26 13:09:12,502 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2021-03-26 13:09:12,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-26 13:09:12,502 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-26 13:09:12,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-26 13:09:12,503 INFO L82 PathProgramCache]: Analyzing trace with hash 177757591, now seen corresponding path program 1 times [2021-03-26 13:09:12,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-26 13:09:12,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723480778] [2021-03-26 13:09:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-26 13:09:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-26 13:09:12,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-26 13:09:12,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:09:12,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-26 13:09:12,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:12,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-26 13:09:12,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-26 13:09:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-26 13:09:12,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723480778] [2021-03-26 13:09:12,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-26 13:09:12,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-26 13:09:12,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884882558] [2021-03-26 13:09:12,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-26 13:09:12,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-26 13:09:12,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-26 13:09:12,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-26 13:09:12,604 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 70 [2021-03-26 13:09:12,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 6 transitions, 24 flow. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-26 13:09:12,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 70 [2021-03-26 13:09:12,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-26 13:09:12,653 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2021-03-26 13:09:12,653 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:09:12,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20 conditions, 5 events. 0/5 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/6 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-03-26 13:09:12,654 INFO L132 encePairwiseOnDemand]: 64/70 looper letters, 0 selfloop transitions, 0 changer transitions 5/5 dead transitions. [2021-03-26 13:09:12,654 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 5 transitions, 32 flow [2021-03-26 13:09:12,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-26 13:09:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-26 13:09:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2021-03-26 13:09:12,655 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.32653061224489793 [2021-03-26 13:09:12,655 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 160 transitions. [2021-03-26 13:09:12,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 160 transitions. [2021-03-26 13:09:12,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-26 13:09:12,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 160 transitions. [2021-03-26 13:09:12,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,658 INFO L185 Difference]: Start difference. First operand has 13 places, 6 transitions, 24 flow. Second operand 7 states and 160 transitions. [2021-03-26 13:09:12,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 5 transitions, 32 flow [2021-03-26 13:09:12,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 5 transitions, 21 flow, removed 1 selfloop flow, removed 5 redundant places. [2021-03-26 13:09:12,658 INFO L241 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2021-03-26 13:09:12,658 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=70, PETRI_DIFFERENCE_MINUEND_FLOW=11, 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=7, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2021-03-26 13:09:12,659 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, -2 predicate places. [2021-03-26 13:09:12,659 INFO L170 etLargeBlockEncoding]: Petri net LBE is using conditional semantic-based independence relation. [2021-03-26 13:09:12,659 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 13 places, 0 transitions, 0 flow [2021-03-26 13:09:12,659 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 13 places, 0 transitions, 0 flow [2021-03-26 13:09:12,659 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-26 13:09:12,660 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-26 13:09:12,660 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-26 13:09:12,660 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. [2021-03-26 13:09:12,660 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-26 13:09:12,660 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-26 13:09:12,660 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-26 13:09:12,660 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-26 13:09:12,661 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-26 13:09:12,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-26 13:09:12,661 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-26 13:09:12,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.03 01:09:12 BasicIcfg [2021-03-26 13:09:12,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-26 13:09:12,666 INFO L168 Benchmark]: Toolchain (without parser) took 4183.40 ms. Allocated memory was 255.9 MB in the beginning and 436.2 MB in the end (delta: 180.4 MB). Free memory was 234.8 MB in the beginning and 395.0 MB in the end (delta: -160.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.0 GB. [2021-03-26 13:09:12,666 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 13:09:12,666 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.52 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 234.3 MB in the beginning and 346.2 MB in the end (delta: -111.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-03-26 13:09:12,667 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.63 ms. Allocated memory is still 362.8 MB. Free memory was 346.2 MB in the beginning and 344.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-26 13:09:12,667 INFO L168 Benchmark]: Boogie Preprocessor took 15.92 ms. Allocated memory is still 362.8 MB. Free memory was 344.9 MB in the beginning and 343.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-26 13:09:12,668 INFO L168 Benchmark]: RCFGBuilder took 454.88 ms. Allocated memory is still 362.8 MB. Free memory was 343.8 MB in the beginning and 328.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-26 13:09:12,668 INFO L168 Benchmark]: TraceAbstraction took 3507.71 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 327.6 MB in the beginning and 395.0 MB in the end (delta: -67.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.0 GB. [2021-03-26 13:09:12,670 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 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 173.52 ms. Allocated memory was 255.9 MB in the beginning and 362.8 MB in the end (delta: 107.0 MB). Free memory was 234.3 MB in the beginning and 346.2 MB in the end (delta: -111.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.63 ms. Allocated memory is still 362.8 MB. Free memory was 346.2 MB in the beginning and 344.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.92 ms. Allocated memory is still 362.8 MB. Free memory was 344.9 MB in the beginning and 343.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 454.88 ms. Allocated memory is still 362.8 MB. Free memory was 343.8 MB in the beginning and 328.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3507.71 ms. Allocated memory was 362.8 MB in the beginning and 436.2 MB in the end (delta: 73.4 MB). Free memory was 327.6 MB in the beginning and 395.0 MB in the end (delta: -67.4 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1298.5ms, 36 PlacesBefore, 15 PlacesAfterwards, 32 TransitionsBefore, 11 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 21 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 31, positive: 30, positive conditional: 30, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 31, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 12, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 31, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 527.4ms, 30 PlacesBefore, 21 PlacesAfterwards, 13 TransitionsBefore, 10 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 3 FixpointIterations, 4 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 72.9ms, 23 PlacesBefore, 16 PlacesAfterwards, 7 TransitionsBefore, 6 TransitionsAfterwards, 2 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 1 MoverChecksTotal, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 1, 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , 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: 1, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 31, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5ms, 13 PlacesBefore, 13 PlacesAfterwards, 6 TransitionsBefore, 6 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): 31, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Eliminated conditions: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.9ms, 13 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): 31, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Eliminated conditions: 0 - PositiveResult [Line: 29]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 5.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 3384.2ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 600.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1397.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 21 SDslu, 44 SDs, 0 SdLazy, 248 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 170.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 489.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=1, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.5ms SsaConstructionTime, 145.9ms SatisfiabilityAnalysisTime, 487.1ms InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...