/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 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 11:03:42,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 11:03:42,450 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 11:03:42,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 11:03:42,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 11:03:42,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 11:03:42,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 11:03:42,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 11:03:42,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 11:03:42,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 11:03:42,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 11:03:42,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 11:03:42,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 11:03:42,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 11:03:42,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 11:03:42,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 11:03:42,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 11:03:42,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 11:03:42,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 11:03:42,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 11:03:42,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 11:03:42,524 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 11:03:42,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 11:03:42,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 11:03:42,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 11:03:42,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 11:03:42,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 11:03:42,533 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 11:03:42,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 11:03:42,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 11:03:42,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 11:03:42,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 11:03:42,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 11:03:42,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 11:03:42,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 11:03:42,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 11:03:42,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 11:03:42,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 11:03:42,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 11:03:42,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 11:03:42,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 11:03:42,544 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 [2021-06-10 11:03:42,582 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 11:03:42,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 11:03:42,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 11:03:42,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 11:03:42,588 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 11:03:42,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 11:03:42,588 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 11:03:42,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 11:03:42,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 11:03:42,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 11:03:42,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 11:03:42,590 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 11:03:42,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 11:03:42,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 11:03:42,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 11:03:42,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 11:03:42,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 11:03:42,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 11:03:42,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 11:03:42,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 11:03:42,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 11:03:42,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 11:03:42,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 11:03:42,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 11:03:42,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 11:03:42,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 11:03:42,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 11:03:42,592 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-10 11:03:42,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 11:03:42,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 11:03:42,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 11:03:43,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 11:03:43,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 11:03:43,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 11:03:43,022 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 11:03:43,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-2.i [2021-06-10 11:03:43,112 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0933a02cd/6be432a9805c40b5bcc53d1eb5b8334d/FLAGc75d99c47 [2021-06-10 11:03:43,718 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 11:03:43,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-2.i [2021-06-10 11:03:43,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0933a02cd/6be432a9805c40b5bcc53d1eb5b8334d/FLAGc75d99c47 [2021-06-10 11:03:43,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0933a02cd/6be432a9805c40b5bcc53d1eb5b8334d [2021-06-10 11:03:43,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 11:03:43,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 11:03:43,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 11:03:43,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 11:03:43,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 11:03:43,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:03:43" (1/1) ... [2021-06-10 11:03:44,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7299c25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:43, skipping insertion in model container [2021-06-10 11:03:44,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 11:03:43" (1/1) ... [2021-06-10 11:03:44,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 11:03:44,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 11:03:44,395 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] [2021-06-10 11:03:44,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:03:44,417 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 11:03:44,468 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] [2021-06-10 11:03:44,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 11:03:44,528 INFO L208 MainTranslator]: Completed translation [2021-06-10 11:03:44,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44 WrapperNode [2021-06-10 11:03:44,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 11:03:44,530 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 11:03:44,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 11:03:44,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 11:03:44,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... [2021-06-10 11:03:44,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... [2021-06-10 11:03:44,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 11:03:44,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 11:03:44,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 11:03:44,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 11:03:44,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... [2021-06-10 11:03:44,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... [2021-06-10 11:03:44,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... [2021-06-10 11:03:44,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... [2021-06-10 11:03:44,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... [2021-06-10 11:03:44,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... [2021-06-10 11:03:44,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... [2021-06-10 11:03:44,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 11:03:44,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 11:03:44,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 11:03:44,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 11:03:44,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 11:03:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-10 11:03:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-10 11:03:44,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-10 11:03:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-10 11:03:44,700 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-10 11:03:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 11:03:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-10 11:03:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 11:03:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 11:03:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 11:03:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 11:03:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 11:03:44,704 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 11:03:45,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 11:03:45,154 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-10 11:03:45,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:03:45 BoogieIcfgContainer [2021-06-10 11:03:45,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 11:03:45,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 11:03:45,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 11:03:45,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 11:03:45,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 11:03:43" (1/3) ... [2021-06-10 11:03:45,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ab6325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:03:45, skipping insertion in model container [2021-06-10 11:03:45,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 11:03:44" (2/3) ... [2021-06-10 11:03:45,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ab6325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 11:03:45, skipping insertion in model container [2021-06-10 11:03:45,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 11:03:45" (3/3) ... [2021-06-10 11:03:45,168 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2021-06-10 11:03:45,174 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 11:03:45,178 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 11:03:45,179 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 11:03:45,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,220 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,220 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,220 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,221 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,221 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,221 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,222 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,222 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,222 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,222 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,222 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,222 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,222 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,223 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,223 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,223 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,223 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,223 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,224 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,224 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,224 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,224 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,225 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,226 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,230 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,230 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,231 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,231 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,232 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,232 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,233 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,233 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,233 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,233 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,233 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,234 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,235 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,236 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,236 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,236 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,237 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,237 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,239 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,240 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,240 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,240 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,240 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,240 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,240 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,241 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,251 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,251 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,252 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,252 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,253 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,253 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 11:03:45,266 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-10 11:03:45,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-10 11:03:45,321 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 11:03:45,321 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 11:03:45,321 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 11:03:45,322 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 11:03:45,322 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 11:03:45,322 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 11:03:45,322 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 11:03:45,322 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 11:03:45,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 188 flow [2021-06-10 11:03:45,408 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2021-06-10 11:03:45,409 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 11:03:45,415 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. [2021-06-10 11:03:45,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 188 flow [2021-06-10 11:03:45,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 71 transitions, 160 flow [2021-06-10 11:03:45,462 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2021-06-10 11:03:45,462 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 11:03:45,462 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:03:45,464 INFO L263 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] [2021-06-10 11:03:45,465 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:03:45,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:03:45,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1623466511, now seen corresponding path program 1 times [2021-06-10 11:03:45,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:03:45,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902370276] [2021-06-10 11:03:45,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:03:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:03:45,882 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:45,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:03:45,890 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:45,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:03:45,914 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:45,915 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:03:45,934 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:45,937 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:03:45,954 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-10 11:03:45,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:03:45,976 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:45,977 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:03:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:03:45,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902370276] [2021-06-10 11:03:45,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:03:45,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 11:03:45,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375438680] [2021-06-10 11:03:45,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 11:03:45,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:03:46,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 11:03:46,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 11:03:46,010 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 83 [2021-06-10 11:03:46,015 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) [2021-06-10 11:03:46,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:03:46,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 83 [2021-06-10 11:03:46,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:03:46,216 INFO L129 PetriNetUnfolder]: 4/128 cut-off events. [2021-06-10 11:03:46,216 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-06-10 11:03:46,217 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. [2021-06-10 11:03:46,219 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 6 selfloop transitions, 4 changer transitions 3/76 dead transitions. [2021-06-10 11:03:46,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 196 flow [2021-06-10 11:03:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 11:03:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 11:03:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 518 transitions. [2021-06-10 11:03:46,248 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.891566265060241 [2021-06-10 11:03:46,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 518 transitions. [2021-06-10 11:03:46,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 518 transitions. [2021-06-10 11:03:46,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:03:46,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 518 transitions. [2021-06-10 11:03:46,259 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) [2021-06-10 11:03:46,268 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) [2021-06-10 11:03:46,269 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) [2021-06-10 11:03:46,271 INFO L185 Difference]: Start difference. First operand has 76 places, 71 transitions, 160 flow. Second operand 7 states and 518 transitions. [2021-06-10 11:03:46,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 196 flow [2021-06-10 11:03:46,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 184 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 11:03:46,281 INFO L241 Difference]: Finished difference. Result has 82 places, 73 transitions, 173 flow [2021-06-10 11:03:46,283 INFO L326 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} [2021-06-10 11:03:46,284 INFO L343 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2021-06-10 11:03:46,284 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 173 flow [2021-06-10 11:03:46,285 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) [2021-06-10 11:03:46,285 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:03:46,285 INFO L263 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] [2021-06-10 11:03:46,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 11:03:46,286 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:03:46,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:03:46,286 INFO L82 PathProgramCache]: Analyzing trace with hash -833333987, now seen corresponding path program 1 times [2021-06-10 11:03:46,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:03:46,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396379308] [2021-06-10 11:03:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:03:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:03:46,365 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,366 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:03:46,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:03:46,376 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,377 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:03:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:03:46,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396379308] [2021-06-10 11:03:46,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:03:46,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 11:03:46,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434589777] [2021-06-10 11:03:46,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 11:03:46,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:03:46,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 11:03:46,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 11:03:46,382 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 83 [2021-06-10 11:03:46,382 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) [2021-06-10 11:03:46,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:03:46,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 83 [2021-06-10 11:03:46,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:03:46,447 INFO L129 PetriNetUnfolder]: 3/120 cut-off events. [2021-06-10 11:03:46,447 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-10 11:03:46,448 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. [2021-06-10 11:03:46,449 INFO L132 encePairwiseOnDemand]: 75/83 looper letters, 8 selfloop transitions, 8 changer transitions 1/72 dead transitions. [2021-06-10 11:03:46,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 200 flow [2021-06-10 11:03:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 11:03:46,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 11:03:46,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2021-06-10 11:03:46,450 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8634538152610441 [2021-06-10 11:03:46,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2021-06-10 11:03:46,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2021-06-10 11:03:46,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:03:46,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2021-06-10 11:03:46,452 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) [2021-06-10 11:03:46,453 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) [2021-06-10 11:03:46,453 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) [2021-06-10 11:03:46,453 INFO L185 Difference]: Start difference. First operand has 82 places, 73 transitions, 173 flow. Second operand 3 states and 215 transitions. [2021-06-10 11:03:46,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 200 flow [2021-06-10 11:03:46,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-06-10 11:03:46,456 INFO L241 Difference]: Finished difference. Result has 78 places, 71 transitions, 172 flow [2021-06-10 11:03:46,456 INFO L326 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} [2021-06-10 11:03:46,457 INFO L343 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2021-06-10 11:03:46,457 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 172 flow [2021-06-10 11:03:46,457 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) [2021-06-10 11:03:46,457 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:03:46,457 INFO L263 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] [2021-06-10 11:03:46,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 11:03:46,458 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:03:46,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:03:46,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1217751959, now seen corresponding path program 2 times [2021-06-10 11:03:46,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:03:46,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155097860] [2021-06-10 11:03:46,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:03:46,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:03:46,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:03:46,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 11:03:46,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-06-10 11:03:46,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-06-10 11:03:46,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:03:46,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:03:46,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155097860] [2021-06-10 11:03:46,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:03:46,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-10 11:03:46,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756066799] [2021-06-10 11:03:46,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 11:03:46,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:03:46,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 11:03:46,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-10 11:03:46,540 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 83 [2021-06-10 11:03:46,540 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) [2021-06-10 11:03:46,541 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:03:46,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 83 [2021-06-10 11:03:46,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:03:46,699 INFO L129 PetriNetUnfolder]: 2/104 cut-off events. [2021-06-10 11:03:46,699 INFO L130 PetriNetUnfolder]: For 2/5 co-relation queries the response was YES. [2021-06-10 11:03:46,700 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. [2021-06-10 11:03:46,700 INFO L132 encePairwiseOnDemand]: 78/83 looper letters, 18 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2021-06-10 11:03:46,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 70 transitions, 213 flow [2021-06-10 11:03:46,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 11:03:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 11:03:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 303 transitions. [2021-06-10 11:03:46,713 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7301204819277108 [2021-06-10 11:03:46,714 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 303 transitions. [2021-06-10 11:03:46,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 303 transitions. [2021-06-10 11:03:46,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:03:46,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 303 transitions. [2021-06-10 11:03:46,715 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) [2021-06-10 11:03:46,717 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) [2021-06-10 11:03:46,717 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) [2021-06-10 11:03:46,718 INFO L185 Difference]: Start difference. First operand has 78 places, 71 transitions, 172 flow. Second operand 5 states and 303 transitions. [2021-06-10 11:03:46,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 70 transitions, 213 flow [2021-06-10 11:03:46,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 70 transitions, 201 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-06-10 11:03:46,721 INFO L241 Difference]: Finished difference. Result has 78 places, 70 transitions, 165 flow [2021-06-10 11:03:46,721 INFO L326 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} [2021-06-10 11:03:46,721 INFO L343 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2021-06-10 11:03:46,722 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 165 flow [2021-06-10 11:03:46,722 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) [2021-06-10 11:03:46,722 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 11:03:46,722 INFO L263 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] [2021-06-10 11:03:46,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 11:03:46,723 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 11:03:46,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 11:03:46,723 INFO L82 PathProgramCache]: Analyzing trace with hash 590890887, now seen corresponding path program 2 times [2021-06-10 11:03:46,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 11:03:46,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970322] [2021-06-10 11:03:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 11:03:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 11:03:46,881 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,882 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:03:46,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:03:46,894 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,897 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:03:46,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:03:46,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 43.8 percent of original size [2021-06-10 11:03:46,928 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 11:03:46,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 11:03:46,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 11:03:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 11:03:46,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970322] [2021-06-10 11:03:46,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 11:03:46,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-10 11:03:46,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670914388] [2021-06-10 11:03:46,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 11:03:46,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 11:03:46,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 11:03:46,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-10 11:03:46,959 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 83 [2021-06-10 11:03:46,960 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) [2021-06-10 11:03:46,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 11:03:46,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 83 [2021-06-10 11:03:46,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 11:03:47,026 INFO L129 PetriNetUnfolder]: 2/102 cut-off events. [2021-06-10 11:03:47,026 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-10 11:03:47,027 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. [2021-06-10 11:03:47,027 INFO L132 encePairwiseOnDemand]: 77/83 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2021-06-10 11:03:47,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 68 transitions, 175 flow [2021-06-10 11:03:47,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 11:03:47,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 11:03:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 512 transitions. [2021-06-10 11:03:47,030 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8812392426850258 [2021-06-10 11:03:47,030 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 512 transitions. [2021-06-10 11:03:47,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 512 transitions. [2021-06-10 11:03:47,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 11:03:47,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 512 transitions. [2021-06-10 11:03:47,032 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) [2021-06-10 11:03:47,034 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) [2021-06-10 11:03:47,035 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) [2021-06-10 11:03:47,035 INFO L185 Difference]: Start difference. First operand has 78 places, 70 transitions, 165 flow. Second operand 7 states and 512 transitions. [2021-06-10 11:03:47,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 68 transitions, 175 flow [2021-06-10 11:03:47,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 68 transitions, 167 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 11:03:47,037 INFO L241 Difference]: Finished difference. Result has 78 places, 0 transitions, 0 flow [2021-06-10 11:03:47,037 INFO L326 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} [2021-06-10 11:03:47,038 INFO L343 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2021-06-10 11:03:47,038 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 0 transitions, 0 flow [2021-06-10 11:03:47,038 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) [2021-06-10 11:03:47,039 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 11:03:47,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 11:03:47 BasicIcfg [2021-06-10 11:03:47,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 11:03:47,045 INFO L168 Benchmark]: Toolchain (without parser) took 3060.06 ms. Allocated memory is still 362.8 MB. Free memory was 325.8 MB in the beginning and 308.0 MB in the end (delta: 17.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.0 GB. [2021-06-10 11:03:47,046 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 362.8 MB. Free memory is still 343.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 11:03:47,046 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.02 ms. Allocated memory is still 362.8 MB. Free memory was 325.6 MB in the beginning and 326.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-06-10 11:03:47,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 362.8 MB. Free memory was 326.9 MB in the beginning and 324.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:03:47,047 INFO L168 Benchmark]: Boogie Preprocessor took 24.49 ms. Allocated memory is still 362.8 MB. Free memory was 324.8 MB in the beginning and 323.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 11:03:47,048 INFO L168 Benchmark]: RCFGBuilder took 565.10 ms. Allocated memory is still 362.8 MB. Free memory was 323.2 MB in the beginning and 297.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-10 11:03:47,049 INFO L168 Benchmark]: TraceAbstraction took 1884.19 ms. Allocated memory is still 362.8 MB. Free memory was 297.5 MB in the beginning and 308.0 MB in the end (delta: -10.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 11:03:47,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 362.8 MB. Free memory is still 343.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 541.02 ms. Allocated memory is still 362.8 MB. Free memory was 325.6 MB in the beginning and 326.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 36.27 ms. Allocated memory is still 362.8 MB. Free memory was 326.9 MB in the beginning and 324.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 24.49 ms. Allocated memory is still 362.8 MB. Free memory was 324.8 MB in the beginning and 323.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 565.10 ms. Allocated memory is still 362.8 MB. Free memory was 323.2 MB in the beginning and 297.5 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1884.19 ms. Allocated memory is still 362.8 MB. Free memory was 297.5 MB in the beginning and 308.0 MB in the end (delta: -10.4 MB). There was no memory consumed. 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 28.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1724.0ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 624.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 111.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 14 SDslu, 47 SDs, 0 SdLazy, 94 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 223.0ms 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: 24.5ms SsaConstructionTime, 171.9ms SatisfiabilityAnalysisTime, 577.6ms 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...