/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/pthreadExitSafe.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 22:09:19,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 22:09:19,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 22:09:19,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 22:09:19,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 22:09:19,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 22:09:19,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 22:09:19,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 22:09:19,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 22:09:19,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 22:09:19,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 22:09:19,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 22:09:19,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 22:09:19,299 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 22:09:19,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 22:09:19,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 22:09:19,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 22:09:19,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 22:09:19,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 22:09:19,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 22:09:19,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 22:09:19,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 22:09:19,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 22:09:19,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 22:09:19,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 22:09:19,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 22:09:19,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 22:09:19,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 22:09:19,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 22:09:19,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 22:09:19,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 22:09:19,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 22:09:19,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 22:09:19,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 22:09:19,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 22:09:19,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 22:09:19,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 22:09:19,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 22:09:19,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 22:09:19,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 22:09:19,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 22:09:19,337 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 [2021-03-24 22:09:19,356 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 22:09:19,356 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 22:09:19,358 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 22:09:19,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 22:09:19,358 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 22:09:19,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 22:09:19,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 22:09:19,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 22:09:19,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 22:09:19,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 22:09:19,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 22:09:19,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 22:09:19,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 22:09:19,360 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 22:09:19,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 22:09:19,360 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 22:09:19,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 22:09:19,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 22:09:19,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 22:09:19,361 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 22:09:19,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 22:09:19,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:09:19,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 22:09:19,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 22:09:19,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 22:09:19,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 22:09:19,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 22:09:19,362 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 22:09:19,362 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 22:09:19,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 22:09:19,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 22:09:19,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 22:09:19,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 22:09:19,652 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 22:09:19,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-03-24 22:09:19,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d58281a/858e3d01c31446bca03ad1d629f2a720/FLAG6c91942b6 [2021-03-24 22:09:20,116 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 22:09:20,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/pthreadExitSafe.c [2021-03-24 22:09:20,117 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 22:09:20,118 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-03-24 22:09:20,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d58281a/858e3d01c31446bca03ad1d629f2a720/FLAG6c91942b6 [2021-03-24 22:09:20,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d58281a/858e3d01c31446bca03ad1d629f2a720 [2021-03-24 22:09:20,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 22:09:20,167 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 22:09:20,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 22:09:20,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 22:09:20,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 22:09:20,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7503e78e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20, skipping insertion in model container [2021-03-24 22:09:20,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 22:09:20,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 22:09:20,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 22:09:20,343 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 22:09:20,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 22:09:20,369 INFO L208 MainTranslator]: Completed translation [2021-03-24 22:09:20,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20 WrapperNode [2021-03-24 22:09:20,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 22:09:20,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 22:09:20,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 22:09:20,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 22:09:20,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 22:09:20,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 22:09:20,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 22:09:20,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 22:09:20,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... [2021-03-24 22:09:20,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 22:09:20,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 22:09:20,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 22:09:20,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 22:09:20,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 22:09:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-03-24 22:09:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 22:09:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure dec [2021-03-24 22:09:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure dec [2021-03-24 22:09:20,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 22:09:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 22:09:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 22:09:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-24 22:09:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-03-24 22:09:20,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 22:09:20,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 22:09:20,537 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 22:09:20,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 22:09:20,797 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-24 22:09:20,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:09:20 BoogieIcfgContainer [2021-03-24 22:09:20,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 22:09:20,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 22:09:20,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 22:09:20,810 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 22:09:20,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:09:20" (1/3) ... [2021-03-24 22:09:20,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673ca61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:09:20, skipping insertion in model container [2021-03-24 22:09:20,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:09:20" (2/3) ... [2021-03-24 22:09:20,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673ca61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:09:20, skipping insertion in model container [2021-03-24 22:09:20,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:09:20" (3/3) ... [2021-03-24 22:09:20,828 INFO L111 eAbstractionObserver]: Analyzing ICFG pthreadExitSafe.c [2021-03-24 22:09:20,834 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 22:09:20,838 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-24 22:09:20,838 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 22:09:20,868 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,869 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,869 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,869 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,869 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,869 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#in~n.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,869 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,869 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,869 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,870 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,870 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,870 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,870 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,870 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,870 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,870 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,870 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,870 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,871 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,871 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,871 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,871 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,871 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,871 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,871 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,871 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,872 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,872 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,872 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,872 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,872 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,873 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,873 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,873 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,873 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,873 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,874 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,874 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,874 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,874 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,874 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,874 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,874 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,875 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,876 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,877 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,877 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,877 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,877 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,877 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~ret~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,878 WARN L313 ript$VariableManager]: TermVariabe |decThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,878 WARN L313 ript$VariableManager]: TermVariabe decThread1of1ForFork0_~n.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 22:09:20,884 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-24 22:09:20,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-24 22:09:20,916 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 22:09:20,916 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 22:09:20,917 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 22:09:20,917 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 22:09:20,917 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 22:09:20,917 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 22:09:20,917 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 22:09:20,917 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 22:09:20,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 47 places, 43 transitions, 94 flow [2021-03-24 22:09:20,952 INFO L129 PetriNetUnfolder]: 0/42 cut-off events. [2021-03-24 22:09:20,952 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 22:09:20,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 42 events. 0/42 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:09:20,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 43 transitions, 94 flow [2021-03-24 22:09:20,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 70 flow [2021-03-24 22:09:20,958 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 22:09:20,968 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 32 transitions, 70 flow [2021-03-24 22:09:20,971 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 32 transitions, 70 flow [2021-03-24 22:09:20,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 70 flow [2021-03-24 22:09:20,982 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2021-03-24 22:09:20,982 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 22:09:20,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 32 events. 0/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-03-24 22:09:20,984 INFO L142 LiptonReduction]: Number of co-enabled transitions 54 [2021-03-24 22:09:21,858 INFO L154 LiptonReduction]: Checked pairs total: 32 [2021-03-24 22:09:21,859 INFO L156 LiptonReduction]: Total number of compositions: 21 [2021-03-24 22:09:21,861 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 904 [2021-03-24 22:09:21,877 INFO L129 PetriNetUnfolder]: 0/10 cut-off events. [2021-03-24 22:09:21,877 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-03-24 22:09:21,877 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:21,878 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:21,879 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:21,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:21,885 INFO L82 PathProgramCache]: Analyzing trace with hash -25287200, now seen corresponding path program 1 times [2021-03-24 22:09:21,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:21,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323549757] [2021-03-24 22:09:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:22,108 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:22,113 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,114 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 22:09:22,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:09:22,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,131 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,140 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-03-24 22:09:22,140 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-24 22:09:22,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,158 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,159 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,181 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,182 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:09:22,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:22,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323549757] [2021-03-24 22:09:22,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:22,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 22:09:22,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647304202] [2021-03-24 22:09:22,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 22:09:22,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:22,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 22:09:22,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-24 22:09:22,224 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2021-03-24 22:09:22,226 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 28 flow. Second operand has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,226 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:22,226 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2021-03-24 22:09:22,227 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:22,417 INFO L129 PetriNetUnfolder]: 2/22 cut-off events. [2021-03-24 22:09:22,417 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-24 22:09:22,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 1/23 useless extension candidates. Maximal degree in co-relation 24. Up to 12 conditions per place. [2021-03-24 22:09:22,419 INFO L132 encePairwiseOnDemand]: 54/64 looper letters, 8 selfloop transitions, 5 changer transitions 6/19 dead transitions. [2021-03-24 22:09:22,420 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 85 flow [2021-03-24 22:09:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 22:09:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 22:09:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2021-03-24 22:09:22,432 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.2315340909090909 [2021-03-24 22:09:22,432 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 163 transitions. [2021-03-24 22:09:22,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 163 transitions. [2021-03-24 22:09:22,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:22,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 163 transitions. [2021-03-24 22:09:22,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,444 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,446 INFO L185 Difference]: Start difference. First operand has 15 places, 11 transitions, 28 flow. Second operand 11 states and 163 transitions. [2021-03-24 22:09:22,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 85 flow [2021-03-24 22:09:22,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 79 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 22:09:22,450 INFO L241 Difference]: Finished difference. Result has 30 places, 13 transitions, 57 flow [2021-03-24 22:09:22,452 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=57, PETRI_PLACES=30, PETRI_TRANSITIONS=13} [2021-03-24 22:09:22,452 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 15 predicate places. [2021-03-24 22:09:22,453 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 13 transitions, 57 flow [2021-03-24 22:09:22,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,453 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:22,453 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:22,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 22:09:22,454 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:22,454 INFO L82 PathProgramCache]: Analyzing trace with hash 830019454, now seen corresponding path program 2 times [2021-03-24 22:09:22,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:22,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875181335] [2021-03-24 22:09:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:22,500 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,501 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:22,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 22:09:22,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:09:22,516 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-24 22:09:22,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 22:09:22,523 INFO L142 QuantifierPusher]: treesize reduction 5, result has 61.5 percent of original size [2021-03-24 22:09:22,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-24 22:09:22,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:09:22,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:22,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875181335] [2021-03-24 22:09:22,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:22,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 22:09:22,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415745545] [2021-03-24 22:09:22,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 22:09:22,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:22,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 22:09:22,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-24 22:09:22,598 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2021-03-24 22:09:22,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 13 transitions, 57 flow. Second operand has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:22,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2021-03-24 22:09:22,599 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:22,772 INFO L129 PetriNetUnfolder]: 1/20 cut-off events. [2021-03-24 22:09:22,773 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 22:09:22,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 20 events. 1/20 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 1 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 61. Up to 11 conditions per place. [2021-03-24 22:09:22,773 INFO L132 encePairwiseOnDemand]: 54/64 looper letters, 7 selfloop transitions, 4 changer transitions 7/18 dead transitions. [2021-03-24 22:09:22,773 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 18 transitions, 116 flow [2021-03-24 22:09:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 22:09:22,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 22:09:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2021-03-24 22:09:22,776 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.23011363636363635 [2021-03-24 22:09:22,776 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 162 transitions. [2021-03-24 22:09:22,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 162 transitions. [2021-03-24 22:09:22,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:22,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 162 transitions. [2021-03-24 22:09:22,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,780 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,780 INFO L185 Difference]: Start difference. First operand has 30 places, 13 transitions, 57 flow. Second operand 11 states and 162 transitions. [2021-03-24 22:09:22,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 18 transitions, 116 flow [2021-03-24 22:09:22,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 18 transitions, 93 flow, removed 9 selfloop flow, removed 7 redundant places. [2021-03-24 22:09:22,782 INFO L241 Difference]: Finished difference. Result has 32 places, 11 transitions, 50 flow [2021-03-24 22:09:22,782 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=50, PETRI_PLACES=32, PETRI_TRANSITIONS=11} [2021-03-24 22:09:22,782 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 17 predicate places. [2021-03-24 22:09:22,782 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 11 transitions, 50 flow [2021-03-24 22:09:22,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,783 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:22,783 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:22,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 22:09:22,783 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:22,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:22,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1746604136, now seen corresponding path program 3 times [2021-03-24 22:09:22,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:22,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696188821] [2021-03-24 22:09:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:22,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:22,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 22:09:22,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:09:22,839 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-24 22:09:22,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 22:09:22,846 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:09:22,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:22,895 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,896 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:09:22,905 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:22,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:22,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:22,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696188821] [2021-03-24 22:09:22,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:22,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 22:09:22,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054220863] [2021-03-24 22:09:22,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 22:09:22,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:22,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 22:09:22,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-24 22:09:22,916 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2021-03-24 22:09:22,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 11 transitions, 50 flow. Second operand has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:22,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:22,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2021-03-24 22:09:22,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:23,096 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-03-24 22:09:23,096 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-24 22:09:23,096 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 16 events. 0/16 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 1/17 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2021-03-24 22:09:23,097 INFO L132 encePairwiseOnDemand]: 54/64 looper letters, 6 selfloop transitions, 5 changer transitions 4/15 dead transitions. [2021-03-24 22:09:23,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 15 transitions, 97 flow [2021-03-24 22:09:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 22:09:23,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 22:09:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2021-03-24 22:09:23,099 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.22585227272727273 [2021-03-24 22:09:23,099 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 159 transitions. [2021-03-24 22:09:23,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 159 transitions. [2021-03-24 22:09:23,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:23,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 159 transitions. [2021-03-24 22:09:23,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.454545454545455) internal successors, (159), 11 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:23,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:23,101 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:23,102 INFO L185 Difference]: Start difference. First operand has 32 places, 11 transitions, 50 flow. Second operand 11 states and 159 transitions. [2021-03-24 22:09:23,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 15 transitions, 97 flow [2021-03-24 22:09:23,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 15 transitions, 67 flow, removed 10 selfloop flow, removed 11 redundant places. [2021-03-24 22:09:23,103 INFO L241 Difference]: Finished difference. Result has 29 places, 11 transitions, 49 flow [2021-03-24 22:09:23,103 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=49, PETRI_PLACES=29, PETRI_TRANSITIONS=11} [2021-03-24 22:09:23,103 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 14 predicate places. [2021-03-24 22:09:23,103 INFO L480 AbstractCegarLoop]: Abstraction has has 29 places, 11 transitions, 49 flow [2021-03-24 22:09:23,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:23,104 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 22:09:23,104 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 22:09:23,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 22:09:23,104 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-24 22:09:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 22:09:23,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2023660436, now seen corresponding path program 4 times [2021-03-24 22:09:23,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 22:09:23,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729686540] [2021-03-24 22:09:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 22:09:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 22:09:23,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:23,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 22:09:23,159 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:23,160 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-03-24 22:09:23,165 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:23,166 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:09:23,177 INFO L142 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-03-24 22:09:23,178 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 22:09:23,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:23,184 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:09:23,192 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:23,192 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 22:09:23,200 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:23,200 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:23,209 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:23,209 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-03-24 22:09:23,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:23,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 22:09:23,227 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 22:09:23,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 22:09:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 22:09:23,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729686540] [2021-03-24 22:09:23,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 22:09:23,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-03-24 22:09:23,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877081707] [2021-03-24 22:09:23,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-03-24 22:09:23,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 22:09:23,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-03-24 22:09:23,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-03-24 22:09:23,238 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 64 [2021-03-24 22:09:23,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 11 transitions, 49 flow. Second operand has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:23,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 22:09:23,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 64 [2021-03-24 22:09:23,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 22:09:23,392 INFO L129 PetriNetUnfolder]: 0/11 cut-off events. [2021-03-24 22:09:23,393 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-03-24 22:09:23,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 11 events. 0/11 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 1/12 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-03-24 22:09:23,393 INFO L132 encePairwiseOnDemand]: 54/64 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2021-03-24 22:09:23,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 11 transitions, 74 flow [2021-03-24 22:09:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 22:09:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 22:09:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2021-03-24 22:09:23,394 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.22017045454545456 [2021-03-24 22:09:23,394 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 155 transitions. [2021-03-24 22:09:23,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 155 transitions. [2021-03-24 22:09:23,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 22:09:23,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 155 transitions. [2021-03-24 22:09:23,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 14.090909090909092) internal successors, (155), 11 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:23,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:23,397 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 64.0) internal successors, (768), 12 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:23,397 INFO L185 Difference]: Start difference. First operand has 29 places, 11 transitions, 49 flow. Second operand 11 states and 155 transitions. [2021-03-24 22:09:23,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 11 transitions, 74 flow [2021-03-24 22:09:23,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 11 transitions, 52 flow, removed 5 selfloop flow, removed 9 redundant places. [2021-03-24 22:09:23,398 INFO L241 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2021-03-24 22:09:23,398 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2021-03-24 22:09:23,398 INFO L343 CegarLoopForPetriNet]: 15 programPoint places, 10 predicate places. [2021-03-24 22:09:23,399 INFO L480 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2021-03-24 22:09:23,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 14.0) internal successors, (154), 11 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 22:09:23,399 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 22:09:23,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:09:23 BasicIcfg [2021-03-24 22:09:23,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 22:09:23,403 INFO L168 Benchmark]: Toolchain (without parser) took 3235.63 ms. Allocated memory was 255.9 MB in the beginning and 438.3 MB in the end (delta: 182.5 MB). Free memory was 235.1 MB in the beginning and 410.7 MB in the end (delta: -175.7 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:23,403 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:09:23,404 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.71 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 225.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:23,404 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.84 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 225.8 MB in the beginning and 348.7 MB in the end (delta: -122.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:23,405 INFO L168 Benchmark]: Boogie Preprocessor took 30.36 ms. Allocated memory is still 364.9 MB. Free memory was 348.7 MB in the beginning and 347.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:09:23,405 INFO L168 Benchmark]: RCFGBuilder took 340.36 ms. Allocated memory is still 364.9 MB. Free memory was 347.4 MB in the beginning and 331.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-24 22:09:23,405 INFO L168 Benchmark]: TraceAbstraction took 2594.52 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 331.3 MB in the beginning and 410.7 MB in the end (delta: -79.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 22:09:23,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory is still 237.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 203.71 ms. Allocated memory is still 255.9 MB. Free memory was 235.1 MB in the beginning and 225.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 60.84 ms. Allocated memory was 255.9 MB in the beginning and 364.9 MB in the end (delta: 109.1 MB). Free memory was 225.8 MB in the beginning and 348.7 MB in the end (delta: -122.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.36 ms. Allocated memory is still 364.9 MB. Free memory was 348.7 MB in the beginning and 347.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 340.36 ms. Allocated memory is still 364.9 MB. Free memory was 347.4 MB in the beginning and 331.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2594.52 ms. Allocated memory was 364.9 MB in the beginning and 438.3 MB in the end (delta: 73.4 MB). Free memory was 331.3 MB in the beginning and 410.7 MB in the end (delta: -79.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 887.9ms, 36 PlacesBefore, 15 PlacesAfterwards, 32 TransitionsBefore, 11 TransitionsAfterwards, 54 CoEnabledTransitionPairs, 4 FixpointIterations, 13 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 21 TotalNumberOfCompositions, 32 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 30, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 30, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 30, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 7, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 31, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 30, unknown conditional: 0, unknown unconditional: 30] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - PositiveResult [Line: 29]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2486.5ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 768.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 952.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 43 SDslu, 78 SDs, 0 SdLazy, 409 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 193.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 662.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=1, InterpolantAutomatonStates: 44, 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: 13.5ms SsaConstructionTime, 98.4ms SatisfiabilityAnalysisTime, 529.2ms InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 422 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...