/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 01:15:59,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 01:15:59,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 01:15:59,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 01:15:59,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 01:15:59,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 01:15:59,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 01:15:59,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 01:15:59,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 01:15:59,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 01:15:59,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 01:15:59,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 01:15:59,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 01:15:59,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 01:15:59,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 01:15:59,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 01:15:59,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 01:15:59,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 01:15:59,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 01:15:59,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 01:15:59,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 01:15:59,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 01:15:59,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 01:15:59,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 01:15:59,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 01:15:59,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 01:15:59,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 01:15:59,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 01:15:59,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 01:15:59,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 01:15:59,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 01:15:59,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 01:15:59,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 01:15:59,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 01:15:59,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 01:15:59,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 01:15:59,224 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-NoLbe.epf [2021-03-11 01:15:59,254 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 01:15:59,254 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 01:15:59,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 01:15:59,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 01:15:59,257 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 01:15:59,257 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 01:15:59,257 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 01:15:59,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 01:15:59,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 01:15:59,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 01:15:59,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 01:15:59,258 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 01:15:59,258 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 01:15:59,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 01:15:59,258 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 01:15:59,258 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 01:15:59,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 01:15:59,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 01:15:59,259 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 01:15:59,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 01:15:59,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 01:15:59,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 01:15:59,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 01:15:59,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 01:15:59,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 01:15:59,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 01:15:59,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 01:15:59,260 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-11 01:15:59,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 01:15:59,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 01:15:59,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 01:15:59,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 01:15:59,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 01:15:59,544 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 01:15:59,544 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 01:15:59,545 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2021-03-11 01:15:59,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20c2f628/a8f18d33597241e2a73c29aa6dd60109/FLAGd56fcd742 [2021-03-11 01:15:59,956 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 01:15:59,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2021-03-11 01:15:59,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20c2f628/a8f18d33597241e2a73c29aa6dd60109/FLAGd56fcd742 [2021-03-11 01:16:00,321 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d20c2f628/a8f18d33597241e2a73c29aa6dd60109 [2021-03-11 01:16:00,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 01:16:00,327 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 01:16:00,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 01:16:00,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 01:16:00,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 01:16:00,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3921a63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00, skipping insertion in model container [2021-03-11 01:16:00,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 01:16:00,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 01:16:00,660 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2021-03-11 01:16:00,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 01:16:00,671 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 01:16:00,702 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i[30826,30839] [2021-03-11 01:16:00,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 01:16:00,758 INFO L208 MainTranslator]: Completed translation [2021-03-11 01:16:00,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00 WrapperNode [2021-03-11 01:16:00,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 01:16:00,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 01:16:00,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 01:16:00,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 01:16:00,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 01:16:00,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 01:16:00,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 01:16:00,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 01:16:00,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,828 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (1/1) ... [2021-03-11 01:16:00,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 01:16:00,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 01:16:00,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 01:16:00,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 01:16:00,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (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 [2021-03-11 01:16:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-11 01:16:00,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-11 01:16:00,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-11 01:16:00,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-11 01:16:00,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-11 01:16:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 01:16:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-03-11 01:16:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 01:16:00,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 01:16:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 01:16:00,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 01:16:00,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 01:16:00,892 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 01:16:01,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 01:16:01,169 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-03-11 01:16:01,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 01:16:01 BoogieIcfgContainer [2021-03-11 01:16:01,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 01:16:01,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 01:16:01,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 01:16:01,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 01:16:01,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 01:16:00" (1/3) ... [2021-03-11 01:16:01,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d8121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 01:16:01, skipping insertion in model container [2021-03-11 01:16:01,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 01:16:00" (2/3) ... [2021-03-11 01:16:01,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8d8121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 01:16:01, skipping insertion in model container [2021-03-11 01:16:01,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 01:16:01" (3/3) ... [2021-03-11 01:16:01,176 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2021-03-11 01:16:01,180 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 01:16:01,184 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 01:16:01,185 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 01:16:01,216 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,217 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,217 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,217 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,217 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,217 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,217 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,217 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,218 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,218 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,218 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,218 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,218 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,218 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,218 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,219 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,221 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,221 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,222 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,222 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,222 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,222 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,222 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,222 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,222 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,223 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,224 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,225 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,226 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,226 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,230 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,230 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,230 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,230 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,231 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,231 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 01:16:01,235 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-03-11 01:16:01,248 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-11 01:16:01,266 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 01:16:01,266 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 01:16:01,266 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 01:16:01,266 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 01:16:01,266 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 01:16:01,266 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 01:16:01,267 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 01:16:01,267 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 01:16:01,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 188 flow [2021-03-11 01:16:01,300 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-03-11 01:16:01,300 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 01:16:01,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 83 events. 2/83 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 28. Up to 3 conditions per place. [2021-03-11 01:16:01,302 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 188 flow [2021-03-11 01:16:01,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 71 transitions, 160 flow [2021-03-11 01:16:01,320 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2021-03-11 01:16:01,320 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 01:16:01,320 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:16:01,321 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 01:16:01,321 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:16:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:16:01,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1623466511, now seen corresponding path program 1 times [2021-03-11 01:16:01,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:16:01,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328351610] [2021-03-11 01:16:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:16:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:16:01,696 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:01,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:16:01,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:01,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 01:16:01,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:01,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 01:16:01,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:01,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 01:16:01,761 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 01:16:01,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 01:16:01,770 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:01,771 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:16:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:16:01,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328351610] [2021-03-11 01:16:01,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:16:01,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 01:16:01,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47387283] [2021-03-11 01:16:01,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 01:16:01,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:16:01,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 01:16:01,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 01:16:01,805 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 83 [2021-03-11 01:16:01,823 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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) [2021-03-11 01:16:01,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:16:01,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 83 [2021-03-11 01:16:01,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:16:02,065 INFO L129 PetriNetUnfolder]: 4/128 cut-off events. [2021-03-11 01:16:02,065 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-03-11 01:16:02,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 128 events. 4/128 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 337 event pairs, 1 based on Foata normal form. 1/128 useless extension candidates. Maximal degree in co-relation 97. Up to 9 conditions per place. [2021-03-11 01:16:02,067 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 6 selfloop transitions, 4 changer transitions 3/76 dead transitions. [2021-03-11 01:16:02,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 196 flow [2021-03-11 01:16:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 01:16:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 01:16:02,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2021-03-11 01:16:02,103 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.891566265060241 [2021-03-11 01:16:02,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2021-03-11 01:16:02,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2021-03-11 01:16:02,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:16:02,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2021-03-11 01:16:02,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2021-03-11 01:16:02,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-03-11 01:16:02,133 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-03-11 01:16:02,134 INFO L185 Difference]: Start difference. First operand has 76 places, 71 transitions, 160 flow. Second operand 7 states and 518 transitions. [2021-03-11 01:16:02,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 196 flow [2021-03-11 01:16:02,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 01:16:02,140 INFO L241 Difference]: Finished difference. Result has 82 places, 73 transitions, 173 flow [2021-03-11 01:16:02,141 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=173, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2021-03-11 01:16:02,142 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2021-03-11 01:16:02,142 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 173 flow [2021-03-11 01:16:02,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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) [2021-03-11 01:16:02,142 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:16:02,143 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 01:16:02,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 01:16:02,145 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:16:02,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:16:02,146 INFO L82 PathProgramCache]: Analyzing trace with hash -833333987, now seen corresponding path program 1 times [2021-03-11 01:16:02,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:16:02,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752891298] [2021-03-11 01:16:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:16:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:16:02,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,251 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:16:02,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 01:16:02,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:16:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:16:02,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752891298] [2021-03-11 01:16:02,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:16:02,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 01:16:02,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548181271] [2021-03-11 01:16:02,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 01:16:02,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:16:02,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 01:16:02,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 01:16:02,259 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2021-03-11 01:16:02,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-03-11 01:16:02,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:16:02,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2021-03-11 01:16:02,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:16:02,297 INFO L129 PetriNetUnfolder]: 3/120 cut-off events. [2021-03-11 01:16:02,298 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-03-11 01:16:02,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 120 events. 3/120 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 239 event pairs, 2 based on Foata normal form. 8/128 useless extension candidates. Maximal degree in co-relation 159. Up to 19 conditions per place. [2021-03-11 01:16:02,299 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 8 selfloop transitions, 8 changer transitions 1/72 dead transitions. [2021-03-11 01:16:02,299 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 200 flow [2021-03-11 01:16:02,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 01:16:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 01:16:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2021-03-11 01:16:02,301 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8634538152610441 [2021-03-11 01:16:02,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2021-03-11 01:16:02,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2021-03-11 01:16:02,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:16:02,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2021-03-11 01:16:02,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2021-03-11 01:16:02,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2021-03-11 01:16:02,303 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 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) [2021-03-11 01:16:02,303 INFO L185 Difference]: Start difference. First operand has 82 places, 73 transitions, 173 flow. Second operand 3 states and 215 transitions. [2021-03-11 01:16:02,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 200 flow [2021-03-11 01:16:02,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-11 01:16:02,305 INFO L241 Difference]: Finished difference. Result has 78 places, 71 transitions, 172 flow [2021-03-11 01:16:02,305 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2021-03-11 01:16:02,305 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2021-03-11 01:16:02,305 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 172 flow [2021-03-11 01:16:02,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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) [2021-03-11 01:16:02,306 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:16:02,306 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 01:16:02,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 01:16:02,306 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:16:02,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:16:02,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1217751959, now seen corresponding path program 2 times [2021-03-11 01:16:02,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:16:02,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602434188] [2021-03-11 01:16:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:16:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:16:02,344 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:16:02,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 01:16:02,348 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-03-11 01:16:02,352 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-11 01:16:02,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,363 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:16:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:16:02,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602434188] [2021-03-11 01:16:02,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:16:02,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 01:16:02,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991606551] [2021-03-11 01:16:02,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 01:16:02,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:16:02,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 01:16:02,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 01:16:02,368 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 83 [2021-03-11 01:16:02,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 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) [2021-03-11 01:16:02,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:16:02,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 83 [2021-03-11 01:16:02,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:16:02,452 INFO L129 PetriNetUnfolder]: 2/104 cut-off events. [2021-03-11 01:16:02,452 INFO L130 PetriNetUnfolder]: For 2/5 co-relation queries the response was YES. [2021-03-11 01:16:02,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 104 events. 2/104 cut-off events. For 2/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 2 based on Foata normal form. 2/106 useless extension candidates. Maximal degree in co-relation 96. Up to 16 conditions per place. [2021-03-11 01:16:02,453 INFO L132 encePairwiseOnDemand]: 78/83 looper letters, 18 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2021-03-11 01:16:02,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 70 transitions, 213 flow [2021-03-11 01:16:02,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 01:16:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 01:16:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 303 transitions. [2021-03-11 01:16:02,455 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7301204819277108 [2021-03-11 01:16:02,455 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 303 transitions. [2021-03-11 01:16:02,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 303 transitions. [2021-03-11 01:16:02,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:16:02,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 303 transitions. [2021-03-11 01:16:02,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.6) internal successors, (303), 5 states have internal predecessors, (303), 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) [2021-03-11 01:16:02,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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) [2021-03-11 01:16:02,457 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 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) [2021-03-11 01:16:02,457 INFO L185 Difference]: Start difference. First operand has 78 places, 71 transitions, 172 flow. Second operand 5 states and 303 transitions. [2021-03-11 01:16:02,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 70 transitions, 213 flow [2021-03-11 01:16:02,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 70 transitions, 201 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-03-11 01:16:02,459 INFO L241 Difference]: Finished difference. Result has 78 places, 70 transitions, 165 flow [2021-03-11 01:16:02,459 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2021-03-11 01:16:02,459 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2021-03-11 01:16:02,460 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 165 flow [2021-03-11 01:16:02,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 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) [2021-03-11 01:16:02,460 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 01:16:02,460 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 01:16:02,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 01:16:02,460 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 01:16:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 01:16:02,461 INFO L82 PathProgramCache]: Analyzing trace with hash 590890887, now seen corresponding path program 2 times [2021-03-11 01:16:02,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 01:16:02,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714483316] [2021-03-11 01:16:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 01:16:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 01:16:02,542 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,543 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:16:02,543 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,544 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 01:16:02,553 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,554 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 01:16:02,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 01:16:02,604 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-03-11 01:16:02,605 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 01:16:02,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 01:16:02,618 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 01:16:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 01:16:02,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714483316] [2021-03-11 01:16:02,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 01:16:02,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-11 01:16:02,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494156311] [2021-03-11 01:16:02,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 01:16:02,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 01:16:02,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 01:16:02,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-11 01:16:02,624 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 83 [2021-03-11 01:16:02,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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) [2021-03-11 01:16:02,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 01:16:02,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 83 [2021-03-11 01:16:02,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 01:16:02,695 INFO L129 PetriNetUnfolder]: 2/102 cut-off events. [2021-03-11 01:16:02,696 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-11 01:16:02,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 102 events. 2/102 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 156 event pairs, 2 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 80. Up to 9 conditions per place. [2021-03-11 01:16:02,713 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2021-03-11 01:16:02,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 68 transitions, 175 flow [2021-03-11 01:16:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 01:16:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-11 01:16:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 512 transitions. [2021-03-11 01:16:02,715 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8812392426850258 [2021-03-11 01:16:02,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 512 transitions. [2021-03-11 01:16:02,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 512 transitions. [2021-03-11 01:16:02,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 01:16:02,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 512 transitions. [2021-03-11 01:16:02,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 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) [2021-03-11 01:16:02,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-03-11 01:16:02,718 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 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) [2021-03-11 01:16:02,719 INFO L185 Difference]: Start difference. First operand has 78 places, 70 transitions, 165 flow. Second operand 7 states and 512 transitions. [2021-03-11 01:16:02,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 68 transitions, 175 flow [2021-03-11 01:16:02,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 68 transitions, 167 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-03-11 01:16:02,721 INFO L241 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2021-03-11 01:16:02,721 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=78, PETRI_TRANSITIONS=0} [2021-03-11 01:16:02,721 INFO L335 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2021-03-11 01:16:02,722 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2021-03-11 01:16:02,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 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) [2021-03-11 01:16:02,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 01:16:02,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 01:16:02 BasicIcfg [2021-03-11 01:16:02,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 01:16:02,743 INFO L168 Benchmark]: Toolchain (without parser) took 2403.82 ms. Allocated memory is still 352.3 MB. Free memory was 315.4 MB in the beginning and 151.5 MB in the end (delta: 163.9 MB). Peak memory consumption was 162.9 MB. Max. memory is 16.0 GB. [2021-03-11 01:16:02,744 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 352.3 MB. Free memory is still 333.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 01:16:02,745 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.48 ms. Allocated memory is still 352.3 MB. Free memory was 314.9 MB in the beginning and 315.1 MB in the end (delta: -208.9 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-03-11 01:16:02,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.45 ms. Allocated memory is still 352.3 MB. Free memory was 315.1 MB in the beginning and 314.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 01:16:02,748 INFO L168 Benchmark]: Boogie Preprocessor took 26.03 ms. Allocated memory is still 352.3 MB. Free memory was 314.0 MB in the beginning and 311.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 01:16:02,749 INFO L168 Benchmark]: RCFGBuilder took 340.08 ms. Allocated memory is still 352.3 MB. Free memory was 311.9 MB in the beginning and 287.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 01:16:02,749 INFO L168 Benchmark]: TraceAbstraction took 1556.16 ms. Allocated memory is still 352.3 MB. Free memory was 286.8 MB in the beginning and 151.5 MB in the end (delta: 135.3 MB). Peak memory consumption was 136.3 MB. Max. memory is 16.0 GB. [2021-03-11 01:16:02,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 352.3 MB. Free memory is still 333.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 430.48 ms. Allocated memory is still 352.3 MB. Free memory was 314.9 MB in the beginning and 315.1 MB in the end (delta: -208.9 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 42.45 ms. Allocated memory is still 352.3 MB. Free memory was 315.1 MB in the beginning and 314.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 26.03 ms. Allocated memory is still 352.3 MB. Free memory was 314.0 MB in the beginning and 311.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 340.08 ms. Allocated memory is still 352.3 MB. Free memory was 311.9 MB in the beginning and 287.0 MB in the end (delta: 24.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1556.16 ms. Allocated memory is still 352.3 MB. Free memory was 286.8 MB in the beginning and 151.5 MB in the end (delta: 135.3 MB). Peak memory consumption was 136.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 727]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1460.6ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 597.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 14 SDslu, 47 SDs, 0 SdLazy, 94 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 191.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 198.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=1, InterpolantAutomatonStates: 22, 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: 33.7ms SsaConstructionTime, 106.3ms SatisfiabilityAnalysisTime, 505.7ms InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 272 ConstructedInterpolants, 0 QuantifiedInterpolants, 996 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...