/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-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 23:44:28,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 23:44:28,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 23:44:28,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 23:44:28,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 23:44:28,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 23:44:28,071 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 23:44:28,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 23:44:28,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 23:44:28,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 23:44:28,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 23:44:28,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 23:44:28,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 23:44:28,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 23:44:28,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 23:44:28,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 23:44:28,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 23:44:28,090 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 23:44:28,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 23:44:28,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 23:44:28,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 23:44:28,099 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 23:44:28,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 23:44:28,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 23:44:28,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-10 23:44:28,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 23:44:28,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 23:44:28,113 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 23:44:28,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 23:44:28,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 23:44:28,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 23:44:28,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 23:44:28,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 23:44:28,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 23:44:28,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 23:44:28,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 23:44:28,120 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-SemanticLbe.epf [2021-06-10 23:44:28,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 23:44:28,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 23:44:28,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 23:44:28,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 23:44:28,156 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 23:44:28,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 23:44:28,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 23:44:28,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 23:44:28,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 23:44:28,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 23:44:28,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 23:44:28,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 23:44:28,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 23:44:28,158 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 23:44:28,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 23:44:28,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 23:44:28,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 23:44:28,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 23:44:28,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 23:44:28,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 23:44:28,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 23:44:28,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:44:28,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 23:44:28,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 23:44:28,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 23:44:28,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 23:44:28,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 23:44:28,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 23:44:28,160 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 23:44:28,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 23:44:28,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 23:44:28,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 23:44:28,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 23:44:28,488 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 23:44:28,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/ThreadIdTest2.c [2021-06-10 23:44:28,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccb2c6ba/fdfdd12ff9b54f59a6bba5f078b34ac1/FLAGb56b4e18f [2021-06-10 23:44:28,904 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 23:44:28,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/ThreadIdTest2.c [2021-06-10 23:44:28,904 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-10 23:44:28,904 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-06-10 23:44:28,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccb2c6ba/fdfdd12ff9b54f59a6bba5f078b34ac1/FLAGb56b4e18f [2021-06-10 23:44:28,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ccb2c6ba/fdfdd12ff9b54f59a6bba5f078b34ac1 [2021-06-10 23:44:28,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 23:44:28,946 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 23:44:28,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 23:44:28,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 23:44:28,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 23:44:28,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:44:28" (1/1) ... [2021-06-10 23:44:28,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e02cbbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:28, skipping insertion in model container [2021-06-10 23:44:28,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:44:28" (1/1) ... [2021-06-10 23:44:28,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 23:44:28,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 23:44:29,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 23:44:29,123 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 23:44:29,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 23:44:29,146 INFO L208 MainTranslator]: Completed translation [2021-06-10 23:44:29,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29 WrapperNode [2021-06-10 23:44:29,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 23:44:29,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 23:44:29,148 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 23:44:29,148 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 23:44:29,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... [2021-06-10 23:44:29,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... [2021-06-10 23:44:29,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 23:44:29,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 23:44:29,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 23:44:29,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 23:44:29,181 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... [2021-06-10 23:44:29,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... [2021-06-10 23:44:29,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... [2021-06-10 23:44:29,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... [2021-06-10 23:44:29,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... [2021-06-10 23:44:29,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... [2021-06-10 23:44:29,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... [2021-06-10 23:44:29,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 23:44:29,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 23:44:29,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 23:44:29,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 23:44:29,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 23:44:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 23:44:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-06-10 23:44:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-06-10 23:44:29,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 23:44:29,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 23:44:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-10 23:44:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 23:44:29,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 23:44:29,271 INFO L130 BoogieDeclarations]: Found specification of procedure inc [2021-06-10 23:44:29,271 INFO L138 BoogieDeclarations]: Found implementation of procedure inc [2021-06-10 23:44:29,272 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 23:44:29,538 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 23:44:29,538 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-10 23:44:29,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:44:29 BoogieIcfgContainer [2021-06-10 23:44:29,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 23:44:29,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 23:44:29,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 23:44:29,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 23:44:29,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 11:44:28" (1/3) ... [2021-06-10 23:44:29,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fb229b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:44:29, skipping insertion in model container [2021-06-10 23:44:29,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:44:29" (2/3) ... [2021-06-10 23:44:29,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fb229b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:44:29, skipping insertion in model container [2021-06-10 23:44:29,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:44:29" (3/3) ... [2021-06-10 23:44:29,545 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest2.c [2021-06-10 23:44:29,549 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 23:44:29,553 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 23:44:29,554 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 23:44:29,587 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,587 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,587 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,588 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,588 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,588 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,588 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,588 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,588 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,589 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,589 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,589 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,589 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,589 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,590 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,590 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,590 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,590 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,590 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,590 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,591 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,591 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,591 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,591 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,591 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,591 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,591 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,592 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,592 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,592 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,592 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,592 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,592 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,593 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,593 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,593 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,595 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,595 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,595 WARN L313 ript$VariableManager]: TermVariabe |incThread1of1ForFork0_#t~post0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,595 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,595 WARN L313 ript$VariableManager]: TermVariabe incThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,612 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,612 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,612 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,612 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,612 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork1_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 23:44:29,620 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-10 23:44:29,637 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-10 23:44:29,653 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 23:44:29,653 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 23:44:29,654 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 23:44:29,654 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 23:44:29,654 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 23:44:29,654 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 23:44:29,654 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 23:44:29,654 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 23:44:29,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 48 places, 42 transitions, 100 flow [2021-06-10 23:44:29,690 INFO L129 PetriNetUnfolder]: 0/51 cut-off events. [2021-06-10 23:44:29,690 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-10 23:44:29,692 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 0/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-10 23:44:29,692 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 42 transitions, 100 flow [2021-06-10 23:44:29,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 32 transitions, 76 flow [2021-06-10 23:44:29,697 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 23:44:29,707 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 32 transitions, 76 flow [2021-06-10 23:44:29,710 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 32 transitions, 76 flow [2021-06-10 23:44:29,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 76 flow [2021-06-10 23:44:29,721 INFO L129 PetriNetUnfolder]: 0/35 cut-off events. [2021-06-10 23:44:29,721 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-10 23:44:29,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 0/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-06-10 23:44:29,724 INFO L151 LiptonReduction]: Number of co-enabled transitions 252 [2021-06-10 23:44:29,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:29,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:29,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,854 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:29,864 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,865 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:29,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:29,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:29,909 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,910 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:29,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:29,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:29,982 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:29,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:30,026 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:30,141 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:44:30,166 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,167 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 23:44:30,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 23:44:30,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:44:30,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,275 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:30,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:44:30,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:44:30,606 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 23:44:30,608 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 23:44:30,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:44:30,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:44:30,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 23:44:30,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-10 23:44:30,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 23:44:30,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 23:44:30,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 23:44:30,629 INFO L163 LiptonReduction]: Checked pairs total: 338 [2021-06-10 23:44:30,629 INFO L165 LiptonReduction]: Total number of compositions: 19 [2021-06-10 23:44:30,632 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 937 [2021-06-10 23:44:30,644 INFO L129 PetriNetUnfolder]: 0/13 cut-off events. [2021-06-10 23:44:30,644 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-10 23:44:30,645 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:44:30,645 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:44:30,646 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:44:30,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:44:30,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1983468425, now seen corresponding path program 1 times [2021-06-10 23:44:30,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:44:30,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71684858] [2021-06-10 23:44:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:44:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:44:30,761 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,761 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:30,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:44:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:44:30,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71684858] [2021-06-10 23:44:30,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:44:30,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 23:44:30,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422998149] [2021-06-10 23:44:30,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 23:44:30,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:44:30,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 23:44:30,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 23:44:30,789 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 61 [2021-06-10 23:44:30,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:30,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:44:30,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 61 [2021-06-10 23:44:30,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:44:30,819 INFO L129 PetriNetUnfolder]: 6/34 cut-off events. [2021-06-10 23:44:30,819 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-06-10 23:44:30,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 34 events. 6/34 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 80 event pairs, 4 based on Foata normal form. 6/37 useless extension candidates. Maximal degree in co-relation 47. Up to 18 conditions per place. [2021-06-10 23:44:30,821 INFO L132 encePairwiseOnDemand]: 57/61 looper letters, 8 selfloop transitions, 3 changer transitions 0/17 dead transitions. [2021-06-10 23:44:30,821 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 68 flow [2021-06-10 23:44:30,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 23:44:30,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 23:44:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2021-06-10 23:44:30,831 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7377049180327869 [2021-06-10 23:44:30,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2021-06-10 23:44:30,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2021-06-10 23:44:30,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:44:30,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2021-06-10 23:44:30,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:30,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:30,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:30,841 INFO L185 Difference]: Start difference. First operand has 19 places, 13 transitions, 38 flow. Second operand 3 states and 135 transitions. [2021-06-10 23:44:30,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 68 flow [2021-06-10 23:44:30,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 17 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 23:44:30,845 INFO L241 Difference]: Finished difference. Result has 18 places, 15 transitions, 49 flow [2021-06-10 23:44:30,847 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=18, PETRI_TRANSITIONS=15} [2021-06-10 23:44:30,847 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, -1 predicate places. [2021-06-10 23:44:30,847 INFO L480 AbstractCegarLoop]: Abstraction has has 18 places, 15 transitions, 49 flow [2021-06-10 23:44:30,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:30,848 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:44:30,848 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:44:30,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 23:44:30,848 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:44:30,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:44:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1826597707, now seen corresponding path program 1 times [2021-06-10 23:44:30,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:44:30,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277586744] [2021-06-10 23:44:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:44:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:44:30,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:44:30,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:44:30,897 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,898 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:44:30,904 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,905 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:44:30,912 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:44:30,921 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:30,922 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 23:44:30,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:44:30,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277586744] [2021-06-10 23:44:30,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:44:30,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 23:44:30,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588400906] [2021-06-10 23:44:30,930 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 23:44:30,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:44:30,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 23:44:30,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 23:44:30,952 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 61 [2021-06-10 23:44:30,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 49 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:30,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:44:30,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 61 [2021-06-10 23:44:30,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:44:31,068 INFO L129 PetriNetUnfolder]: 9/43 cut-off events. [2021-06-10 23:44:31,069 INFO L130 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2021-06-10 23:44:31,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 43 events. 9/43 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 118 event pairs, 2 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 65. Up to 25 conditions per place. [2021-06-10 23:44:31,069 INFO L132 encePairwiseOnDemand]: 54/61 looper letters, 10 selfloop transitions, 7 changer transitions 6/27 dead transitions. [2021-06-10 23:44:31,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 138 flow [2021-06-10 23:44:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 23:44:31,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 23:44:31,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2021-06-10 23:44:31,077 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6024590163934426 [2021-06-10 23:44:31,077 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 294 transitions. [2021-06-10 23:44:31,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 294 transitions. [2021-06-10 23:44:31,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:44:31,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 294 transitions. [2021-06-10 23:44:31,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 36.75) internal successors, (294), 8 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,084 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,084 INFO L185 Difference]: Start difference. First operand has 18 places, 15 transitions, 49 flow. Second operand 8 states and 294 transitions. [2021-06-10 23:44:31,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 138 flow [2021-06-10 23:44:31,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 23:44:31,087 INFO L241 Difference]: Finished difference. Result has 29 places, 19 transitions, 89 flow [2021-06-10 23:44:31,087 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=89, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2021-06-10 23:44:31,089 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 10 predicate places. [2021-06-10 23:44:31,089 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 89 flow [2021-06-10 23:44:31,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,091 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:44:31,091 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:44:31,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 23:44:31,095 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:44:31,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:44:31,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1697238369, now seen corresponding path program 2 times [2021-06-10 23:44:31,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:44:31,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774185636] [2021-06-10 23:44:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:44:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:44:31,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:31,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,119 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:44:31,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:44:31,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 23:44:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:44:31,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774185636] [2021-06-10 23:44:31,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:44:31,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 23:44:31,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945698565] [2021-06-10 23:44:31,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 23:44:31,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:44:31,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 23:44:31,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 23:44:31,131 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 61 [2021-06-10 23:44:31,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,132 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:44:31,132 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 61 [2021-06-10 23:44:31,132 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:44:31,161 INFO L129 PetriNetUnfolder]: 6/34 cut-off events. [2021-06-10 23:44:31,161 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2021-06-10 23:44:31,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 34 events. 6/34 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 3 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 105. Up to 22 conditions per place. [2021-06-10 23:44:31,162 INFO L132 encePairwiseOnDemand]: 56/61 looper letters, 12 selfloop transitions, 3 changer transitions 2/22 dead transitions. [2021-06-10 23:44:31,163 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 137 flow [2021-06-10 23:44:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 23:44:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 23:44:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2021-06-10 23:44:31,164 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6524590163934426 [2021-06-10 23:44:31,164 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2021-06-10 23:44:31,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2021-06-10 23:44:31,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:44:31,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2021-06-10 23:44:31,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,166 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,166 INFO L185 Difference]: Start difference. First operand has 29 places, 19 transitions, 89 flow. Second operand 5 states and 199 transitions. [2021-06-10 23:44:31,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 137 flow [2021-06-10 23:44:31,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 116 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-06-10 23:44:31,168 INFO L241 Difference]: Finished difference. Result has 28 places, 19 transitions, 83 flow [2021-06-10 23:44:31,168 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2021-06-10 23:44:31,168 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 9 predicate places. [2021-06-10 23:44:31,168 INFO L480 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 83 flow [2021-06-10 23:44:31,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,168 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:44:31,168 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:44:31,169 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 23:44:31,169 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:44:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:44:31,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1697267199, now seen corresponding path program 3 times [2021-06-10 23:44:31,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:44:31,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246179118] [2021-06-10 23:44:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:44:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:44:31,188 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,188 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:31,189 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,189 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:44:31,191 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:44:31,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,195 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 23:44:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:44:31,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246179118] [2021-06-10 23:44:31,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:44:31,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 23:44:31,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271403971] [2021-06-10 23:44:31,200 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 23:44:31,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:44:31,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 23:44:31,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-10 23:44:31,201 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 61 [2021-06-10 23:44:31,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:44:31,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 61 [2021-06-10 23:44:31,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:44:31,232 INFO L129 PetriNetUnfolder]: 5/35 cut-off events. [2021-06-10 23:44:31,232 INFO L130 PetriNetUnfolder]: For 39/41 co-relation queries the response was YES. [2021-06-10 23:44:31,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 35 events. 5/35 cut-off events. For 39/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 78 event pairs, 4 based on Foata normal form. 1/35 useless extension candidates. Maximal degree in co-relation 100. Up to 23 conditions per place. [2021-06-10 23:44:31,233 INFO L132 encePairwiseOnDemand]: 56/61 looper letters, 8 selfloop transitions, 4 changer transitions 4/21 dead transitions. [2021-06-10 23:44:31,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 21 transitions, 129 flow [2021-06-10 23:44:31,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 23:44:31,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 23:44:31,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2021-06-10 23:44:31,234 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6524590163934426 [2021-06-10 23:44:31,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2021-06-10 23:44:31,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2021-06-10 23:44:31,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:44:31,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2021-06-10 23:44:31,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,236 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,236 INFO L185 Difference]: Start difference. First operand has 28 places, 19 transitions, 83 flow. Second operand 5 states and 199 transitions. [2021-06-10 23:44:31,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 21 transitions, 129 flow [2021-06-10 23:44:31,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 117 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-06-10 23:44:31,237 INFO L241 Difference]: Finished difference. Result has 30 places, 17 transitions, 83 flow [2021-06-10 23:44:31,238 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=30, PETRI_TRANSITIONS=17} [2021-06-10 23:44:31,238 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 11 predicate places. [2021-06-10 23:44:31,238 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 17 transitions, 83 flow [2021-06-10 23:44:31,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,238 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:44:31,238 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:44:31,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 23:44:31,238 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:44:31,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:44:31,239 INFO L82 PathProgramCache]: Analyzing trace with hash 87325488, now seen corresponding path program 1 times [2021-06-10 23:44:31,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:44:31,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499246086] [2021-06-10 23:44:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:44:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:44:31,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,267 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-06-10 23:44:31,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:44:31,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-10 23:44:31,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 23:44:31,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 23:44:31,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:44:31,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499246086] [2021-06-10 23:44:31,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:44:31,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-10 23:44:31,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416894834] [2021-06-10 23:44:31,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 23:44:31,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:44:31,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 23:44:31,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-10 23:44:31,288 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 61 [2021-06-10 23:44:31,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 17 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:44:31,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 61 [2021-06-10 23:44:31,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:44:31,317 INFO L129 PetriNetUnfolder]: 2/18 cut-off events. [2021-06-10 23:44:31,317 INFO L130 PetriNetUnfolder]: For 19/21 co-relation queries the response was YES. [2021-06-10 23:44:31,317 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 18 events. 2/18 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 15 event pairs, 1 based on Foata normal form. 3/20 useless extension candidates. Maximal degree in co-relation 52. Up to 7 conditions per place. [2021-06-10 23:44:31,317 INFO L132 encePairwiseOnDemand]: 56/61 looper letters, 2 selfloop transitions, 4 changer transitions 3/15 dead transitions. [2021-06-10 23:44:31,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 15 transitions, 87 flow [2021-06-10 23:44:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 23:44:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 23:44:31,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2021-06-10 23:44:31,319 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6459016393442623 [2021-06-10 23:44:31,319 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 197 transitions. [2021-06-10 23:44:31,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 197 transitions. [2021-06-10 23:44:31,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:44:31,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 197 transitions. [2021-06-10 23:44:31,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.4) internal successors, (197), 5 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,320 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 61.0) internal successors, (366), 6 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,320 INFO L185 Difference]: Start difference. First operand has 30 places, 17 transitions, 83 flow. Second operand 5 states and 197 transitions. [2021-06-10 23:44:31,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 15 transitions, 87 flow [2021-06-10 23:44:31,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 15 transitions, 59 flow, removed 3 selfloop flow, removed 9 redundant places. [2021-06-10 23:44:31,322 INFO L241 Difference]: Finished difference. Result has 23 places, 12 transitions, 45 flow [2021-06-10 23:44:31,322 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=45, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2021-06-10 23:44:31,322 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2021-06-10 23:44:31,322 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 45 flow [2021-06-10 23:44:31,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,322 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 23:44:31,322 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 23:44:31,322 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 23:44:31,323 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-10 23:44:31,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 23:44:31,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1513158819, now seen corresponding path program 4 times [2021-06-10 23:44:31,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 23:44:31,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789099042] [2021-06-10 23:44:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 23:44:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 23:44:31,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,342 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 23:44:31,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:44:31,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:44:31,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:44:31,363 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 23:44:31,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 23:44:31,371 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-10 23:44:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 23:44:31,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789099042] [2021-06-10 23:44:31,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 23:44:31,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 23:44:31,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169790637] [2021-06-10 23:44:31,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-10 23:44:31,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 23:44:31,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-10 23:44:31,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-10 23:44:31,380 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 61 [2021-06-10 23:44:31,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 45 flow. Second operand has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 23:44:31,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 61 [2021-06-10 23:44:31,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 23:44:31,416 INFO L129 PetriNetUnfolder]: 1/14 cut-off events. [2021-06-10 23:44:31,417 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-06-10 23:44:31,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 14 events. 1/14 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 8 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 31. Up to 4 conditions per place. [2021-06-10 23:44:31,417 INFO L132 encePairwiseOnDemand]: 54/61 looper letters, 0 selfloop transitions, 0 changer transitions 13/13 dead transitions. [2021-06-10 23:44:31,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 13 transitions, 69 flow [2021-06-10 23:44:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-10 23:44:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-06-10 23:44:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 283 transitions. [2021-06-10 23:44:31,418 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.5799180327868853 [2021-06-10 23:44:31,419 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 283 transitions. [2021-06-10 23:44:31,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 283 transitions. [2021-06-10 23:44:31,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 23:44:31,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 283 transitions. [2021-06-10 23:44:31,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.375) internal successors, (283), 8 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,421 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,421 INFO L185 Difference]: Start difference. First operand has 23 places, 12 transitions, 45 flow. Second operand 8 states and 283 transitions. [2021-06-10 23:44:31,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 13 transitions, 69 flow [2021-06-10 23:44:31,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-06-10 23:44:31,421 INFO L241 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2021-06-10 23:44:31,422 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2021-06-10 23:44:31,422 INFO L343 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2021-06-10 23:44:31,422 INFO L480 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2021-06-10 23:44:31,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 23:44:31,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 23:44:31,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:44:31 BasicIcfg [2021-06-10 23:44:31,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 23:44:31,426 INFO L168 Benchmark]: Toolchain (without parser) took 2479.73 ms. Allocated memory is still 335.5 MB. Free memory was 297.4 MB in the beginning and 235.9 MB in the end (delta: 61.6 MB). Peak memory consumption was 62.3 MB. Max. memory is 16.0 GB. [2021-06-10 23:44:31,426 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 335.5 MB. Free memory was 315.6 MB in the beginning and 315.5 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 23:44:31,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.41 ms. Allocated memory is still 335.5 MB. Free memory was 297.2 MB in the beginning and 318.3 MB in the end (delta: -21.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. [2021-06-10 23:44:31,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.66 ms. Allocated memory is still 335.5 MB. Free memory was 318.3 MB in the beginning and 316.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 23:44:31,427 INFO L168 Benchmark]: Boogie Preprocessor took 22.54 ms. Allocated memory is still 335.5 MB. Free memory was 316.2 MB in the beginning and 315.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 23:44:31,428 INFO L168 Benchmark]: RCFGBuilder took 339.99 ms. Allocated memory is still 335.5 MB. Free memory was 315.1 MB in the beginning and 299.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-06-10 23:44:31,428 INFO L168 Benchmark]: TraceAbstraction took 1884.59 ms. Allocated memory is still 335.5 MB. Free memory was 299.4 MB in the beginning and 235.9 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 16.0 GB. [2021-06-10 23:44:31,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 335.5 MB. Free memory was 315.6 MB in the beginning and 315.5 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 199.41 ms. Allocated memory is still 335.5 MB. Free memory was 297.2 MB in the beginning and 318.3 MB in the end (delta: -21.0 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 26.66 ms. Allocated memory is still 335.5 MB. Free memory was 318.3 MB in the beginning and 316.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 22.54 ms. Allocated memory is still 335.5 MB. Free memory was 316.2 MB in the beginning and 315.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 339.99 ms. Allocated memory is still 335.5 MB. Free memory was 315.1 MB in the beginning and 299.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1884.59 ms. Allocated memory is still 335.5 MB. Free memory was 299.4 MB in the beginning and 235.9 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 919.5ms, 38 PlacesBefore, 19 PlacesAfterwards, 32 TransitionsBefore, 13 TransitionsAfterwards, 252 CoEnabledTransitionPairs, 5 FixpointIterations, 8 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 19 TotalNumberOfCompositions, 338 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 242, positive: 215, positive conditional: 0, positive unconditional: 215, negative: 27, negative conditional: 0, negative unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 171, positive: 153, positive conditional: 0, positive unconditional: 153, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 171, positive: 153, positive conditional: 0, positive unconditional: 153, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 171, positive: 153, positive conditional: 0, positive unconditional: 153, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 18, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 58, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 242, positive: 62, positive conditional: 0, positive unconditional: 62, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 171, unknown conditional: 0, unknown unconditional: 171] , Statistics on independence cache: Total cache size (in pairs): 288, Positive cache size: 270, Positive conditional cache size: 0, Positive unconditional cache size: 270, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18 - PositiveResult [Line: 37]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1773.4ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 371.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 983.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 41 SDtfs, 23 SDslu, 26 SDs, 0 SdLazy, 188 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 124.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 150.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=2, InterpolantAutomatonStates: 34, 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: 9.9ms SsaConstructionTime, 52.7ms SatisfiabilityAnalysisTime, 229.2ms InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 249 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...