/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-25 13:24:21,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-25 13:24:21,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-25 13:24:21,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-25 13:24:21,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-25 13:24:21,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-25 13:24:21,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-25 13:24:21,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-25 13:24:21,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-25 13:24:21,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-25 13:24:21,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-25 13:24:21,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-25 13:24:21,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-25 13:24:21,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-25 13:24:21,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-25 13:24:21,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-25 13:24:21,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-25 13:24:21,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-25 13:24:21,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-25 13:24:21,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-25 13:24:21,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-25 13:24:21,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-25 13:24:21,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-25 13:24:21,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-25 13:24:21,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-25 13:24:21,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-25 13:24:21,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-25 13:24:21,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-25 13:24:21,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-25 13:24:21,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-25 13:24:21,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-25 13:24:21,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-25 13:24:21,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-25 13:24:21,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-25 13:24:21,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-25 13:24:21,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-25 13:24:21,522 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-RepeatedSemanticLbe.epf [2021-03-25 13:24:21,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-25 13:24:21,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-25 13:24:21,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-25 13:24:21,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-25 13:24:21,568 INFO L138 SettingsManager]: * Use SBE=true [2021-03-25 13:24:21,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-25 13:24:21,569 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-25 13:24:21,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-25 13:24:21,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-25 13:24:21,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-25 13:24:21,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-25 13:24:21,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-25 13:24:21,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-25 13:24:21,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-25 13:24:21,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-25 13:24:21,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-25 13:24:21,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-25 13:24:21,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-25 13:24:21,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-25 13:24:21,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-25 13:24:21,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-25 13:24:21,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-25 13:24:21,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-25 13:24:21,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-25 13:24:21,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-25 13:24:21,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-25 13:24:21,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-25 13:24:21,573 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-25 13:24:21,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-03-25 13:24:21,574 INFO L138 SettingsManager]: * Apply repeated Lipton Reduction=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-25 13:24:21,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-25 13:24:21,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-25 13:24:21,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-25 13:24:21,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-25 13:24:21,922 INFO L275 PluginConnector]: CDTParser initialized [2021-03-25 13:24:21,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-25 13:24:21,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e42bf18/7e57e1242193476a9994bbc2775ba41a/FLAG5a45947d4 [2021-03-25 13:24:22,505 INFO L306 CDTParser]: Found 1 translation units. [2021-03-25 13:24:22,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/17_szymanski.i [2021-03-25 13:24:22,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e42bf18/7e57e1242193476a9994bbc2775ba41a/FLAG5a45947d4 [2021-03-25 13:24:22,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4e42bf18/7e57e1242193476a9994bbc2775ba41a [2021-03-25 13:24:22,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-25 13:24:22,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-25 13:24:22,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-25 13:24:22,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-25 13:24:22,795 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-25 13:24:22,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 01:24:22" (1/1) ... [2021-03-25 13:24:22,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f62c472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:22, skipping insertion in model container [2021-03-25 13:24:22,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.03 01:24:22" (1/1) ... [2021-03-25 13:24:22,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-25 13:24:22,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-25 13:24:23,083 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-ext/17_szymanski.i[30132,30145] [2021-03-25 13:24:23,091 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-ext/17_szymanski.i[30481,30494] [2021-03-25 13:24:23,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 13:24:23,104 INFO L203 MainTranslator]: Completed pre-run [2021-03-25 13:24:23,142 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-ext/17_szymanski.i[30132,30145] [2021-03-25 13:24:23,147 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-ext/17_szymanski.i[30481,30494] [2021-03-25 13:24:23,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-25 13:24:23,217 INFO L208 MainTranslator]: Completed translation [2021-03-25 13:24:23,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23 WrapperNode [2021-03-25 13:24:23,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-25 13:24:23,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-25 13:24:23,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-25 13:24:23,219 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-25 13:24:23,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (1/1) ... [2021-03-25 13:24:23,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (1/1) ... [2021-03-25 13:24:23,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-25 13:24:23,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-25 13:24:23,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-25 13:24:23,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-25 13:24:23,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (1/1) ... [2021-03-25 13:24:23,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (1/1) ... [2021-03-25 13:24:23,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (1/1) ... [2021-03-25 13:24:23,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (1/1) ... [2021-03-25 13:24:23,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (1/1) ... [2021-03-25 13:24:23,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (1/1) ... [2021-03-25 13:24:23,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (1/1) ... [2021-03-25 13:24:23,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-25 13:24:23,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-25 13:24:23,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-25 13:24:23,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-25 13:24:23,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (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 [2021-03-25 13:24:23,336 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-03-25 13:24:23,337 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-03-25 13:24:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-25 13:24:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-25 13:24:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-25 13:24:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-25 13:24:23,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-25 13:24:23,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-25 13:24:23,341 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-25 13:24:23,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-25 13:24:23,635 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-03-25 13:24:23,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 01:24:23 BoogieIcfgContainer [2021-03-25 13:24:23,636 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-25 13:24:23,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-25 13:24:23,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-25 13:24:23,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-25 13:24:23,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.03 01:24:22" (1/3) ... [2021-03-25 13:24:23,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f508a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 01:24:23, skipping insertion in model container [2021-03-25 13:24:23,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.03 01:24:23" (2/3) ... [2021-03-25 13:24:23,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f508a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.03 01:24:23, skipping insertion in model container [2021-03-25 13:24:23,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.03 01:24:23" (3/3) ... [2021-03-25 13:24:23,642 INFO L111 eAbstractionObserver]: Analyzing ICFG 17_szymanski.i [2021-03-25 13:24:23,646 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-25 13:24:23,650 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-25 13:24:23,650 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-25 13:24:23,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,669 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,671 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,672 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,672 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-25 13:24:23,675 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-25 13:24:23,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-25 13:24:23,708 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-25 13:24:23,708 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-25 13:24:23,708 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-25 13:24:23,708 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-25 13:24:23,708 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-25 13:24:23,709 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-25 13:24:23,709 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-25 13:24:23,709 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-25 13:24:23,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 68 places, 88 transitions, 181 flow [2021-03-25 13:24:23,750 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-03-25 13:24:23,750 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:23,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2021-03-25 13:24:23,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 88 transitions, 181 flow [2021-03-25 13:24:23,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 87 transitions, 177 flow [2021-03-25 13:24:23,765 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:23,779 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 87 transitions, 177 flow [2021-03-25 13:24:23,782 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 87 transitions, 177 flow [2021-03-25 13:24:23,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 87 transitions, 177 flow [2021-03-25 13:24:23,798 INFO L129 PetriNetUnfolder]: 24/87 cut-off events. [2021-03-25 13:24:23,798 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:23,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 24/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 142 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 72. Up to 3 conditions per place. [2021-03-25 13:24:23,802 INFO L142 LiptonReduction]: Number of co-enabled transitions 2542 [2021-03-25 13:24:24,511 INFO L154 LiptonReduction]: Checked pairs total: 1861 [2021-03-25 13:24:24,511 INFO L156 LiptonReduction]: Total number of compositions: 38 [2021-03-25 13:24:24,513 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 749 [2021-03-25 13:24:24,537 INFO L129 PetriNetUnfolder]: 10/44 cut-off events. [2021-03-25 13:24:24,537 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:24,537 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:24,538 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:24,538 INFO L428 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:24:24,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:24,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1907373222, now seen corresponding path program 1 times [2021-03-25 13:24:24,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:24,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090269402] [2021-03-25 13:24:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:24,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:24,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:24,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:24,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-25 13:24:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:24,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090269402] [2021-03-25 13:24:24,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:24,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:24:24,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686313839] [2021-03-25 13:24:24,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:24,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:24,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:24,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:24,788 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 126 [2021-03-25 13:24:24,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 56 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2021-03-25 13:24:24,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:24,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 126 [2021-03-25 13:24:24,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:24,831 INFO L129 PetriNetUnfolder]: 56/169 cut-off events. [2021-03-25 13:24:24,831 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:24,832 INFO L84 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 169 events. 56/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 476 event pairs, 2 based on Foata normal form. 43/165 useless extension candidates. Maximal degree in co-relation 200. Up to 24 conditions per place. [2021-03-25 13:24:24,834 INFO L132 encePairwiseOnDemand]: 115/126 looper letters, 8 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2021-03-25 13:24:24,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 50 transitions, 125 flow [2021-03-25 13:24:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:24,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2021-03-25 13:24:24,845 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2021-03-25 13:24:24,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2021-03-25 13:24:24,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2021-03-25 13:24:24,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:24,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2021-03-25 13:24:24,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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) [2021-03-25 13:24:24,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2021-03-25 13:24:24,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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) [2021-03-25 13:24:24,859 INFO L185 Difference]: Start difference. First operand has 44 places, 56 transitions, 115 flow. Second operand 3 states and 280 transitions. [2021-03-25 13:24:24,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 50 transitions, 125 flow [2021-03-25 13:24:24,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 124 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 13:24:24,863 INFO L241 Difference]: Finished difference. Result has 41 places, 48 transitions, 118 flow [2021-03-25 13:24:24,865 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=41, PETRI_TRANSITIONS=48} [2021-03-25 13:24:24,866 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2021-03-25 13:24:24,866 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:24,866 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 48 transitions, 118 flow [2021-03-25 13:24:24,866 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 48 transitions, 118 flow [2021-03-25 13:24:24,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 48 transitions, 118 flow [2021-03-25 13:24:24,879 INFO L129 PetriNetUnfolder]: 42/138 cut-off events. [2021-03-25 13:24:24,879 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-03-25 13:24:24,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 138 events. 42/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 1 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 154. Up to 12 conditions per place. [2021-03-25 13:24:24,881 INFO L142 LiptonReduction]: Number of co-enabled transitions 898 [2021-03-25 13:24:25,367 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2021-03-25 13:24:25,427 INFO L154 LiptonReduction]: Checked pairs total: 273 [2021-03-25 13:24:25,430 INFO L156 LiptonReduction]: Total number of compositions: 3 [2021-03-25 13:24:25,430 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 564 [2021-03-25 13:24:25,432 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 45 transitions, 112 flow [2021-03-25 13:24:25,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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) [2021-03-25 13:24:25,440 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:25,440 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-25 13:24:25,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-25 13:24:25,441 INFO L428 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:24:25,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:25,442 INFO L82 PathProgramCache]: Analyzing trace with hash 32955086, now seen corresponding path program 1 times [2021-03-25 13:24:25,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:25,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851766077] [2021-03-25 13:24:25,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:25,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:25,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:25,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:25,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 13:24:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:25,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851766077] [2021-03-25 13:24:25,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:25,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-25 13:24:25,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831157466] [2021-03-25 13:24:25,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:25,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:25,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:25,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:25,514 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 129 [2021-03-25 13:24:25,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2021-03-25 13:24:25,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:25,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 129 [2021-03-25 13:24:25,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:25,546 INFO L129 PetriNetUnfolder]: 46/141 cut-off events. [2021-03-25 13:24:25,546 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2021-03-25 13:24:25,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 141 events. 46/141 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 360 event pairs, 2 based on Foata normal form. 8/113 useless extension candidates. Maximal degree in co-relation 193. Up to 16 conditions per place. [2021-03-25 13:24:25,548 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 7 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2021-03-25 13:24:25,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 130 flow [2021-03-25 13:24:25,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2021-03-25 13:24:25,556 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.6950904392764858 [2021-03-25 13:24:25,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2021-03-25 13:24:25,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2021-03-25 13:24:25,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:25,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2021-03-25 13:24:25,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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) [2021-03-25 13:24:25,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2021-03-25 13:24:25,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 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) [2021-03-25 13:24:25,560 INFO L185 Difference]: Start difference. First operand has 38 places, 45 transitions, 112 flow. Second operand 3 states and 269 transitions. [2021-03-25 13:24:25,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 130 flow [2021-03-25 13:24:25,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-25 13:24:25,562 INFO L241 Difference]: Finished difference. Result has 39 places, 45 transitions, 116 flow [2021-03-25 13:24:25,563 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=45} [2021-03-25 13:24:25,564 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2021-03-25 13:24:25,564 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:25,564 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 45 transitions, 116 flow [2021-03-25 13:24:25,564 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 45 transitions, 116 flow [2021-03-25 13:24:25,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 39 places, 45 transitions, 116 flow [2021-03-25 13:24:25,581 INFO L129 PetriNetUnfolder]: 51/157 cut-off events. [2021-03-25 13:24:25,581 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2021-03-25 13:24:25,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 157 events. 51/157 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 432 event pairs, 2 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 190. Up to 16 conditions per place. [2021-03-25 13:24:25,586 INFO L142 LiptonReduction]: Number of co-enabled transitions 846 [2021-03-25 13:24:25,820 INFO L154 LiptonReduction]: Checked pairs total: 168 [2021-03-25 13:24:25,820 INFO L156 LiptonReduction]: Total number of compositions: 1 [2021-03-25 13:24:25,820 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 256 [2021-03-25 13:24:25,822 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 44 transitions, 114 flow [2021-03-25 13:24:25,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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) [2021-03-25 13:24:25,823 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:25,823 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] [2021-03-25 13:24:25,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-25 13:24:25,823 INFO L428 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:24:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:25,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1711264529, now seen corresponding path program 1 times [2021-03-25 13:24:25,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:25,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743589748] [2021-03-25 13:24:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:25,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:25,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:25,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:25,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 13:24:25,876 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 13:24:25,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:25,877 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:25,877 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:25,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:25,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743589748] [2021-03-25 13:24:25,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:25,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 13:24:25,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765952560] [2021-03-25 13:24:25,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:25,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:25,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:25,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:25,880 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 130 [2021-03-25 13:24:25,881 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 44 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2021-03-25 13:24:25,881 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:25,881 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 130 [2021-03-25 13:24:25,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:25,941 INFO L129 PetriNetUnfolder]: 264/532 cut-off events. [2021-03-25 13:24:25,942 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2021-03-25 13:24:25,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 532 events. 264/532 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2148 event pairs, 52 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 897. Up to 225 conditions per place. [2021-03-25 13:24:25,946 INFO L132 encePairwiseOnDemand]: 119/130 looper letters, 19 selfloop transitions, 6 changer transitions 0/53 dead transitions. [2021-03-25 13:24:25,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 53 transitions, 182 flow [2021-03-25 13:24:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:25,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2021-03-25 13:24:25,947 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2021-03-25 13:24:25,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2021-03-25 13:24:25,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2021-03-25 13:24:25,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:25,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2021-03-25 13:24:25,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2021-03-25 13:24:25,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2021-03-25 13:24:25,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2021-03-25 13:24:25,950 INFO L185 Difference]: Start difference. First operand has 38 places, 44 transitions, 114 flow. Second operand 3 states and 264 transitions. [2021-03-25 13:24:25,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 53 transitions, 182 flow [2021-03-25 13:24:25,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 180 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-25 13:24:25,952 INFO L241 Difference]: Finished difference. Result has 41 places, 49 transitions, 166 flow [2021-03-25 13:24:25,953 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=41, PETRI_TRANSITIONS=49} [2021-03-25 13:24:25,953 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2021-03-25 13:24:25,953 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:25,953 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 49 transitions, 166 flow [2021-03-25 13:24:25,953 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 49 transitions, 166 flow [2021-03-25 13:24:25,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 41 places, 49 transitions, 166 flow [2021-03-25 13:24:25,975 INFO L129 PetriNetUnfolder]: 183/423 cut-off events. [2021-03-25 13:24:25,975 INFO L130 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2021-03-25 13:24:25,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 423 events. 183/423 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1777 event pairs, 29 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 695. Up to 141 conditions per place. [2021-03-25 13:24:25,979 INFO L142 LiptonReduction]: Number of co-enabled transitions 704 [2021-03-25 13:24:25,990 INFO L154 LiptonReduction]: Checked pairs total: 21 [2021-03-25 13:24:25,991 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 13:24:25,991 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 38 [2021-03-25 13:24:25,992 INFO L480 AbstractCegarLoop]: Abstraction has has 41 places, 49 transitions, 166 flow [2021-03-25 13:24:25,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2021-03-25 13:24:25,992 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-25 13:24:25,992 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] [2021-03-25 13:24:25,992 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-25 13:24:25,992 INFO L428 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-25 13:24:25,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-25 13:24:25,993 INFO L82 PathProgramCache]: Analyzing trace with hash -893110981, now seen corresponding path program 1 times [2021-03-25 13:24:25,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-25 13:24:25,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429159740] [2021-03-25 13:24:25,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-25 13:24:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-25 13:24:26,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:26,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:26,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:26,016 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-03-25 13:24:26,020 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-03-25 13:24:26,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:26,022 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-25 13:24:26,022 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-25 13:24:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-25 13:24:26,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429159740] [2021-03-25 13:24:26,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-25 13:24:26,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-25 13:24:26,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784375340] [2021-03-25 13:24:26,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-25 13:24:26,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-25 13:24:26,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-25 13:24:26,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-25 13:24:26,025 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 130 [2021-03-25 13:24:26,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 49 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2021-03-25 13:24:26,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-25 13:24:26,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 130 [2021-03-25 13:24:26,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-25 13:24:26,100 INFO L129 PetriNetUnfolder]: 330/624 cut-off events. [2021-03-25 13:24:26,100 INFO L130 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2021-03-25 13:24:26,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 624 events. 330/624 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2521 event pairs, 60 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 1237. Up to 212 conditions per place. [2021-03-25 13:24:26,104 INFO L132 encePairwiseOnDemand]: 119/130 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2021-03-25 13:24:26,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 226 flow [2021-03-25 13:24:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-25 13:24:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-25 13:24:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2021-03-25 13:24:26,106 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.676923076923077 [2021-03-25 13:24:26,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2021-03-25 13:24:26,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2021-03-25 13:24:26,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-25 13:24:26,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2021-03-25 13:24:26,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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) [2021-03-25 13:24:26,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2021-03-25 13:24:26,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 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) [2021-03-25 13:24:26,108 INFO L185 Difference]: Start difference. First operand has 41 places, 49 transitions, 166 flow. Second operand 3 states and 264 transitions. [2021-03-25 13:24:26,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 226 flow [2021-03-25 13:24:26,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 56 transitions, 210 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-03-25 13:24:26,115 INFO L241 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2021-03-25 13:24:26,115 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2021-03-25 13:24:26,115 INFO L343 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2021-03-25 13:24:26,115 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-25 13:24:26,115 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 0 transitions, 0 flow [2021-03-25 13:24:26,115 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 0 transitions, 0 flow [2021-03-25 13:24:26,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2021-03-25 13:24:26,116 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-03-25 13:24:26,116 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-25 13:24:26,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2021-03-25 13:24:26,116 INFO L142 LiptonReduction]: Number of co-enabled transitions 0 [2021-03-25 13:24:26,116 INFO L154 LiptonReduction]: Checked pairs total: 0 [2021-03-25 13:24:26,116 INFO L156 LiptonReduction]: Total number of compositions: 0 [2021-03-25 13:24:26,116 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1 [2021-03-25 13:24:26,118 INFO L480 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2021-03-25 13:24:26,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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) [2021-03-25 13:24:26,119 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-25 13:24:26,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.03 01:24:26 BasicIcfg [2021-03-25 13:24:26,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-25 13:24:26,127 INFO L168 Benchmark]: Toolchain (without parser) took 3335.80 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.3 MB in the beginning and 207.7 MB in the end (delta: 27.6 MB). Peak memory consumption was 128.9 MB. Max. memory is 16.0 GB. [2021-03-25 13:24:26,127 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-25 13:24:26,128 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.63 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.3 MB in the beginning and 323.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-03-25 13:24:26,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.47 ms. Allocated memory is still 358.6 MB. Free memory was 323.4 MB in the beginning and 321.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 13:24:26,130 INFO L168 Benchmark]: Boogie Preprocessor took 21.38 ms. Allocated memory is still 358.6 MB. Free memory was 321.8 MB in the beginning and 320.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-25 13:24:26,130 INFO L168 Benchmark]: RCFGBuilder took 363.41 ms. Allocated memory is still 358.6 MB. Free memory was 320.2 MB in the beginning and 336.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.0 GB. [2021-03-25 13:24:26,133 INFO L168 Benchmark]: TraceAbstraction took 2485.75 ms. Allocated memory is still 358.6 MB. Free memory was 336.3 MB in the beginning and 207.7 MB in the end (delta: 128.6 MB). Peak memory consumption was 128.0 MB. Max. memory is 16.0 GB. [2021-03-25 13:24:26,139 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 429.63 ms. Allocated memory was 255.9 MB in the beginning and 358.6 MB in the end (delta: 102.8 MB). Free memory was 235.3 MB in the beginning and 323.4 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 31.47 ms. Allocated memory is still 358.6 MB. Free memory was 323.4 MB in the beginning and 321.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 21.38 ms. Allocated memory is still 358.6 MB. Free memory was 321.8 MB in the beginning and 320.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 363.41 ms. Allocated memory is still 358.6 MB. Free memory was 320.2 MB in the beginning and 336.3 MB in the end (delta: -16.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2485.75 ms. Allocated memory is still 358.6 MB. Free memory was 336.3 MB in the beginning and 207.7 MB in the end (delta: 128.6 MB). Peak memory consumption was 128.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 730.0ms, 67 PlacesBefore, 44 PlacesAfterwards, 87 TransitionsBefore, 56 TransitionsAfterwards, 2542 CoEnabledTransitionPairs, 4 FixpointIterations, 10 TrivialSequentialCompositions, 14 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 38 TotalNumberOfCompositions, 1861 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 821, positive: 781, positive conditional: 0, positive unconditional: 781, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 694, positive: 675, positive conditional: 0, positive unconditional: 675, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 694, positive: 675, positive conditional: 0, positive unconditional: 675, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 694, positive: 663, positive conditional: 0, positive unconditional: 663, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 12, positive conditional: 0, positive unconditional: 12, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 64, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 821, positive: 106, positive conditional: 0, positive unconditional: 106, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 694, unknown conditional: 0, unknown unconditional: 694] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 39, Positive conditional cache size: 0, Positive unconditional cache size: 39, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 564.0ms, 41 PlacesBefore, 38 PlacesAfterwards, 48 TransitionsBefore, 45 TransitionsAfterwards, 898 CoEnabledTransitionPairs, 3 FixpointIterations, 2 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 3 TotalNumberOfCompositions, 273 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 73, positive: 61, positive conditional: 0, positive unconditional: 61, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 23, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 23, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 23, positive: 22, positive conditional: 0, positive unconditional: 22, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 73, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 23, unknown conditional: 0, unknown unconditional: 23] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 255.7ms, 39 PlacesBefore, 38 PlacesAfterwards, 45 TransitionsBefore, 44 TransitionsAfterwards, 846 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 168 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 38, positive: 30, positive conditional: 0, positive unconditional: 30, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 38, positive: 28, positive conditional: 0, positive unconditional: 28, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 57, Positive cache size: 44, Positive conditional cache size: 0, Positive unconditional cache size: 44, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 37.2ms, 41 PlacesBefore, 41 PlacesAfterwards, 49 TransitionsBefore, 49 TransitionsAfterwards, 704 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 21 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8ms, 39 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, 0 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14 - PositiveResult [Line: 698]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 716]: 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 2 procedures, 65 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 14.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2414.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 303.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 813.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 53 SDtfs, 12 SDslu, 0 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.2ms SsaConstructionTime, 67.6ms SatisfiabilityAnalysisTime, 182.2ms InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...