/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 03:27:35,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 03:27:35,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 03:27:35,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 03:27:35,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 03:27:35,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 03:27:35,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 03:27:35,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 03:27:35,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 03:27:35,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 03:27:35,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 03:27:35,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 03:27:35,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 03:27:35,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 03:27:35,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 03:27:35,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 03:27:35,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 03:27:35,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 03:27:35,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 03:27:35,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 03:27:35,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 03:27:35,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 03:27:35,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 03:27:35,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 03:27:35,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 03:27:35,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 03:27:35,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 03:27:35,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 03:27:35,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 03:27:35,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 03:27:35,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 03:27:35,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 03:27:35,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 03:27:35,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 03:27:35,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 03:27:35,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 03:27:35,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe-SemanticLooper.epf [2020-10-16 03:27:35,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 03:27:35,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 03:27:35,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 03:27:35,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 03:27:35,295 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 03:27:35,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 03:27:35,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 03:27:35,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 03:27:35,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 03:27:35,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 03:27:35,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 03:27:35,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 03:27:35,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 03:27:35,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 03:27:35,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 03:27:35,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 03:27:35,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 03:27:35,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 03:27:35,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 03:27:35,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 03:27:35,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 03:27:35,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 03:27:35,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 03:27:35,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 03:27:35,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 03:27:35,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 03:27:35,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 03:27:35,299 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 03:27:35,299 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 03:27:35,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 03:27:35,618 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 03:27:35,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 03:27:35,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 03:27:35,624 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 03:27:35,625 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 03:27:35,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6c41fe8d/983ece54e5b34502a50cdad47cb6cf38/FLAG2adecc359 [2020-10-16 03:27:36,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 03:27:36,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 03:27:36,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6c41fe8d/983ece54e5b34502a50cdad47cb6cf38/FLAG2adecc359 [2020-10-16 03:27:36,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6c41fe8d/983ece54e5b34502a50cdad47cb6cf38 [2020-10-16 03:27:36,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 03:27:36,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 03:27:36,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 03:27:36,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 03:27:36,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 03:27:36,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:27:36" (1/1) ... [2020-10-16 03:27:36,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d418a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:36, skipping insertion in model container [2020-10-16 03:27:36,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:27:36" (1/1) ... [2020-10-16 03:27:36,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 03:27:36,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 03:27:37,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:27:37,086 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 03:27:37,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 03:27:37,221 INFO L208 MainTranslator]: Completed translation [2020-10-16 03:27:37,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37 WrapperNode [2020-10-16 03:27:37,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 03:27:37,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 03:27:37,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 03:27:37,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 03:27:37,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (1/1) ... [2020-10-16 03:27:37,247 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (1/1) ... [2020-10-16 03:27:37,268 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 03:27:37,268 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 03:27:37,268 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 03:27:37,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 03:27:37,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (1/1) ... [2020-10-16 03:27:37,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (1/1) ... [2020-10-16 03:27:37,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (1/1) ... [2020-10-16 03:27:37,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (1/1) ... [2020-10-16 03:27:37,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (1/1) ... [2020-10-16 03:27:37,294 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (1/1) ... [2020-10-16 03:27:37,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (1/1) ... [2020-10-16 03:27:37,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 03:27:37,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 03:27:37,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 03:27:37,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 03:27:37,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (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 [2020-10-16 03:27:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 03:27:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 03:27:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 03:27:37,374 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 03:27:37,374 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 03:27:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 03:27:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 03:27:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 03:27:37,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 03:27:37,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 03:27:37,377 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 03:27:37,699 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 03:27:37,699 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-16 03:27:37,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:27:37 BoogieIcfgContainer [2020-10-16 03:27:37,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 03:27:37,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 03:27:37,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 03:27:37,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 03:27:37,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:27:36" (1/3) ... [2020-10-16 03:27:37,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4b390c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:27:37, skipping insertion in model container [2020-10-16 03:27:37,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:27:37" (2/3) ... [2020-10-16 03:27:37,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a4b390c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:27:37, skipping insertion in model container [2020-10-16 03:27:37,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:27:37" (3/3) ... [2020-10-16 03:27:37,711 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-16 03:27:37,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 03:27:37,730 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 03:27:37,732 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 03:27:37,761 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,761 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,761 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,762 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,763 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,763 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,765 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,772 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,778 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,778 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,778 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,779 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 03:27:37,820 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 03:27:37,839 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 03:27:37,839 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 03:27:37,839 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 03:27:37,839 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 03:27:37,840 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 03:27:37,840 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 03:27:37,840 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 03:27:37,840 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 03:27:37,856 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-10-16 03:27:37,901 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-10-16 03:27:37,902 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 03:27:37,910 INFO L80 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 103 events. 25/103 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 205 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-10-16 03:27:37,911 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 103 transitions, 228 flow [2020-10-16 03:27:37,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 91 transitions, 194 flow [2020-10-16 03:27:37,921 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 03:27:37,924 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 91 transitions, 194 flow [2020-10-16 03:27:37,926 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 91 transitions, 194 flow [2020-10-16 03:27:37,927 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 91 transitions, 194 flow [2020-10-16 03:27:37,952 INFO L129 PetriNetUnfolder]: 24/93 cut-off events. [2020-10-16 03:27:37,952 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:27:37,954 INFO L80 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 24/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 200 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 79. Up to 5 conditions per place. [2020-10-16 03:27:37,959 INFO L117 LiptonReduction]: Number of co-enabled transitions 3196 [2020-10-16 03:27:39,206 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-10-16 03:27:39,282 INFO L132 LiptonReduction]: Checked pairs total: 11249 [2020-10-16 03:27:39,282 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-16 03:27:39,285 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1366 [2020-10-16 03:27:39,291 INFO L129 PetriNetUnfolder]: 1/7 cut-off events. [2020-10-16 03:27:39,292 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:27:39,292 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:39,293 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 03:27:39,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:39,299 INFO L82 PathProgramCache]: Analyzing trace with hash 13952369, now seen corresponding path program 1 times [2020-10-16 03:27:39,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:39,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053267622] [2020-10-16 03:27:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:39,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:39,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053267622] [2020-10-16 03:27:39,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:39,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:27:39,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800991135] [2020-10-16 03:27:39,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 03:27:39,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 03:27:39,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 03:27:39,485 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 153 [2020-10-16 03:27:39,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 59 transitions, 130 flow. Second operand 2 states. [2020-10-16 03:27:39,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:39,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 153 [2020-10-16 03:27:39,489 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:39,505 INFO L129 PetriNetUnfolder]: 12/55 cut-off events. [2020-10-16 03:27:39,506 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 03:27:39,507 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 12/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 0 based on Foata normal form. 6/47 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2020-10-16 03:27:39,508 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 0 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2020-10-16 03:27:39,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 118 flow [2020-10-16 03:27:39,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 03:27:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 03:27:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 260 transitions. [2020-10-16 03:27:39,525 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8496732026143791 [2020-10-16 03:27:39,525 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 260 transitions. [2020-10-16 03:27:39,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 260 transitions. [2020-10-16 03:27:39,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:39,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 260 transitions. [2020-10-16 03:27:39,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 03:27:39,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 03:27:39,543 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 03:27:39,545 INFO L185 Difference]: Start difference. First operand has 47 places, 59 transitions, 130 flow. Second operand 2 states and 260 transitions. [2020-10-16 03:27:39,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 118 flow [2020-10-16 03:27:39,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 53 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-16 03:27:39,552 INFO L241 Difference]: Finished difference. Result has 44 places, 53 transitions, 110 flow [2020-10-16 03:27:39,555 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2020-10-16 03:27:39,556 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2020-10-16 03:27:39,556 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 110 flow [2020-10-16 03:27:39,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 03:27:39,557 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:39,557 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:39,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 03:27:39,557 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:39,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:39,558 INFO L82 PathProgramCache]: Analyzing trace with hash -2123964917, now seen corresponding path program 1 times [2020-10-16 03:27:39,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:39,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785813258] [2020-10-16 03:27:39,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:39,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785813258] [2020-10-16 03:27:39,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:39,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:27:39,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21719702] [2020-10-16 03:27:39,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:39,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:39,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:39,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:39,630 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 153 [2020-10-16 03:27:39,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 110 flow. Second operand 3 states. [2020-10-16 03:27:39,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:39,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 153 [2020-10-16 03:27:39,631 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:39,672 INFO L129 PetriNetUnfolder]: 19/101 cut-off events. [2020-10-16 03:27:39,672 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 03:27:39,673 INFO L80 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 101 events. 19/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 327 event pairs, 2 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 131. Up to 18 conditions per place. [2020-10-16 03:27:39,674 INFO L132 encePairwiseOnDemand]: 148/153 looper letters, 7 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2020-10-16 03:27:39,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 136 flow [2020-10-16 03:27:39,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:39,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2020-10-16 03:27:39,678 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7712418300653595 [2020-10-16 03:27:39,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2020-10-16 03:27:39,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2020-10-16 03:27:39,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:39,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2020-10-16 03:27:39,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:39,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:39,683 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:39,683 INFO L185 Difference]: Start difference. First operand has 44 places, 53 transitions, 110 flow. Second operand 3 states and 354 transitions. [2020-10-16 03:27:39,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 136 flow [2020-10-16 03:27:39,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 03:27:39,686 INFO L241 Difference]: Finished difference. Result has 48 places, 54 transitions, 130 flow [2020-10-16 03:27:39,686 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=48, PETRI_TRANSITIONS=54} [2020-10-16 03:27:39,687 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2020-10-16 03:27:39,687 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 54 transitions, 130 flow [2020-10-16 03:27:39,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:39,688 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:39,688 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:39,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 03:27:39,688 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:39,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:39,689 INFO L82 PathProgramCache]: Analyzing trace with hash 398777111, now seen corresponding path program 1 times [2020-10-16 03:27:39,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:39,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256737409] [2020-10-16 03:27:39,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:39,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256737409] [2020-10-16 03:27:39,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:39,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 03:27:39,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737587577] [2020-10-16 03:27:39,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:39,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:39,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:39,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:39,767 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 153 [2020-10-16 03:27:39,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 54 transitions, 130 flow. Second operand 3 states. [2020-10-16 03:27:39,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:39,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 153 [2020-10-16 03:27:39,768 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:39,803 INFO L129 PetriNetUnfolder]: 14/87 cut-off events. [2020-10-16 03:27:39,803 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2020-10-16 03:27:39,804 INFO L80 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 87 events. 14/87 cut-off events. For 11/13 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 259 event pairs, 2 based on Foata normal form. 6/80 useless extension candidates. Maximal degree in co-relation 127. Up to 11 conditions per place. [2020-10-16 03:27:39,805 INFO L132 encePairwiseOnDemand]: 149/153 looper letters, 6 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2020-10-16 03:27:39,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 146 flow [2020-10-16 03:27:39,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:39,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2020-10-16 03:27:39,808 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7668845315904139 [2020-10-16 03:27:39,808 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2020-10-16 03:27:39,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2020-10-16 03:27:39,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:39,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2020-10-16 03:27:39,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:39,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:39,813 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:39,813 INFO L185 Difference]: Start difference. First operand has 48 places, 54 transitions, 130 flow. Second operand 3 states and 352 transitions. [2020-10-16 03:27:39,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 146 flow [2020-10-16 03:27:39,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:27:39,816 INFO L241 Difference]: Finished difference. Result has 49 places, 54 transitions, 134 flow [2020-10-16 03:27:39,816 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2020-10-16 03:27:39,817 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2020-10-16 03:27:39,817 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 134 flow [2020-10-16 03:27:39,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:39,817 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:39,818 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:39,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 03:27:39,818 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:39,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:39,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1903844965, now seen corresponding path program 1 times [2020-10-16 03:27:39,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:39,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154366117] [2020-10-16 03:27:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:39,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154366117] [2020-10-16 03:27:39,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:39,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:27:39,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316867010] [2020-10-16 03:27:39,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:39,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:39,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:39,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:39,873 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 153 [2020-10-16 03:27:39,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 134 flow. Second operand 3 states. [2020-10-16 03:27:39,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:39,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 153 [2020-10-16 03:27:39,874 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:40,015 INFO L129 PetriNetUnfolder]: 215/513 cut-off events. [2020-10-16 03:27:40,016 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2020-10-16 03:27:40,018 INFO L80 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 513 events. 215/513 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2856 event pairs, 34 based on Foata normal form. 3/401 useless extension candidates. Maximal degree in co-relation 890. Up to 231 conditions per place. [2020-10-16 03:27:40,021 INFO L132 encePairwiseOnDemand]: 141/153 looper letters, 27 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2020-10-16 03:27:40,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 224 flow [2020-10-16 03:27:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2020-10-16 03:27:40,024 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6993464052287581 [2020-10-16 03:27:40,024 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2020-10-16 03:27:40,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2020-10-16 03:27:40,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:40,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2020-10-16 03:27:40,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:40,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:40,027 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:40,027 INFO L185 Difference]: Start difference. First operand has 49 places, 54 transitions, 134 flow. Second operand 3 states and 321 transitions. [2020-10-16 03:27:40,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 224 flow [2020-10-16 03:27:40,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 65 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 03:27:40,031 INFO L241 Difference]: Finished difference. Result has 52 places, 59 transitions, 190 flow [2020-10-16 03:27:40,031 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2020-10-16 03:27:40,032 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2020-10-16 03:27:40,032 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 190 flow [2020-10-16 03:27:40,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:40,032 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:40,032 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:40,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 03:27:40,033 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:40,033 INFO L82 PathProgramCache]: Analyzing trace with hash 338812755, now seen corresponding path program 2 times [2020-10-16 03:27:40,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:40,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405407998] [2020-10-16 03:27:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:40,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405407998] [2020-10-16 03:27:40,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:40,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:27:40,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541914987] [2020-10-16 03:27:40,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:40,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:40,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:40,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:40,080 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 153 [2020-10-16 03:27:40,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 190 flow. Second operand 3 states. [2020-10-16 03:27:40,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:40,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 153 [2020-10-16 03:27:40,081 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:40,172 INFO L129 PetriNetUnfolder]: 200/627 cut-off events. [2020-10-16 03:27:40,173 INFO L130 PetriNetUnfolder]: For 139/144 co-relation queries the response was YES. [2020-10-16 03:27:40,175 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 627 events. 200/627 cut-off events. For 139/144 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4066 event pairs, 21 based on Foata normal form. 5/569 useless extension candidates. Maximal degree in co-relation 1121. Up to 126 conditions per place. [2020-10-16 03:27:40,178 INFO L132 encePairwiseOnDemand]: 149/153 looper letters, 10 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2020-10-16 03:27:40,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 230 flow [2020-10-16 03:27:40,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2020-10-16 03:27:40,181 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7603485838779956 [2020-10-16 03:27:40,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2020-10-16 03:27:40,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2020-10-16 03:27:40,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:40,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2020-10-16 03:27:40,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:40,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:40,184 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:40,185 INFO L185 Difference]: Start difference. First operand has 52 places, 59 transitions, 190 flow. Second operand 3 states and 349 transitions. [2020-10-16 03:27:40,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 230 flow [2020-10-16 03:27:40,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:27:40,189 INFO L241 Difference]: Finished difference. Result has 54 places, 62 transitions, 206 flow [2020-10-16 03:27:40,190 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=54, PETRI_TRANSITIONS=62} [2020-10-16 03:27:40,190 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2020-10-16 03:27:40,190 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 62 transitions, 206 flow [2020-10-16 03:27:40,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:40,190 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:40,191 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:40,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 03:27:40,191 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:40,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:40,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1993299143, now seen corresponding path program 3 times [2020-10-16 03:27:40,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:40,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315536148] [2020-10-16 03:27:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:40,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:40,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315536148] [2020-10-16 03:27:40,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:40,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:27:40,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434681264] [2020-10-16 03:27:40,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:40,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:40,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:40,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:40,234 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 153 [2020-10-16 03:27:40,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 62 transitions, 206 flow. Second operand 3 states. [2020-10-16 03:27:40,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:40,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 153 [2020-10-16 03:27:40,235 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:40,367 INFO L129 PetriNetUnfolder]: 272/772 cut-off events. [2020-10-16 03:27:40,367 INFO L130 PetriNetUnfolder]: For 225/256 co-relation queries the response was YES. [2020-10-16 03:27:40,369 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 772 events. 272/772 cut-off events. For 225/256 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5193 event pairs, 49 based on Foata normal form. 34/722 useless extension candidates. Maximal degree in co-relation 1585. Up to 325 conditions per place. [2020-10-16 03:27:40,373 INFO L132 encePairwiseOnDemand]: 141/153 looper letters, 21 selfloop transitions, 9 changer transitions 9/72 dead transitions. [2020-10-16 03:27:40,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 322 flow [2020-10-16 03:27:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:40,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:40,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2020-10-16 03:27:40,376 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6949891067538126 [2020-10-16 03:27:40,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2020-10-16 03:27:40,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2020-10-16 03:27:40,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:40,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2020-10-16 03:27:40,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:40,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:40,380 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:40,380 INFO L185 Difference]: Start difference. First operand has 54 places, 62 transitions, 206 flow. Second operand 3 states and 319 transitions. [2020-10-16 03:27:40,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 322 flow [2020-10-16 03:27:40,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:27:40,384 INFO L241 Difference]: Finished difference. Result has 56 places, 62 transitions, 254 flow [2020-10-16 03:27:40,385 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2020-10-16 03:27:40,385 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2020-10-16 03:27:40,385 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 254 flow [2020-10-16 03:27:40,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:40,386 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:40,386 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:40,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 03:27:40,387 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:40,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1355563725, now seen corresponding path program 4 times [2020-10-16 03:27:40,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:40,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256488923] [2020-10-16 03:27:40,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:40,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256488923] [2020-10-16 03:27:40,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:40,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:27:40,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143474722] [2020-10-16 03:27:40,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:40,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:40,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:40,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:40,424 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 153 [2020-10-16 03:27:40,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 254 flow. Second operand 3 states. [2020-10-16 03:27:40,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:40,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 153 [2020-10-16 03:27:40,425 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:40,495 INFO L129 PetriNetUnfolder]: 107/503 cut-off events. [2020-10-16 03:27:40,496 INFO L130 PetriNetUnfolder]: For 258/281 co-relation queries the response was YES. [2020-10-16 03:27:40,498 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 503 events. 107/503 cut-off events. For 258/281 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3553 event pairs, 16 based on Foata normal form. 16/482 useless extension candidates. Maximal degree in co-relation 1001. Up to 87 conditions per place. [2020-10-16 03:27:40,499 INFO L132 encePairwiseOnDemand]: 149/153 looper letters, 11 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2020-10-16 03:27:40,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 274 flow [2020-10-16 03:27:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:40,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2020-10-16 03:27:40,502 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7581699346405228 [2020-10-16 03:27:40,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2020-10-16 03:27:40,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2020-10-16 03:27:40,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:40,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2020-10-16 03:27:40,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:40,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:40,505 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:40,505 INFO L185 Difference]: Start difference. First operand has 56 places, 62 transitions, 254 flow. Second operand 3 states and 348 transitions. [2020-10-16 03:27:40,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 274 flow [2020-10-16 03:27:40,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 252 flow, removed 3 selfloop flow, removed 2 redundant places. [2020-10-16 03:27:40,509 INFO L241 Difference]: Finished difference. Result has 58 places, 62 transitions, 240 flow [2020-10-16 03:27:40,510 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2020-10-16 03:27:40,510 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2020-10-16 03:27:40,510 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 240 flow [2020-10-16 03:27:40,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:40,510 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:40,510 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:40,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 03:27:40,511 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:40,511 INFO L82 PathProgramCache]: Analyzing trace with hash 2104674242, now seen corresponding path program 1 times [2020-10-16 03:27:40,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:40,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799871167] [2020-10-16 03:27:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:40,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:40,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799871167] [2020-10-16 03:27:40,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:40,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:27:40,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583041099] [2020-10-16 03:27:40,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:40,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:40,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:40,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:40,543 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 153 [2020-10-16 03:27:40,544 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 240 flow. Second operand 3 states. [2020-10-16 03:27:40,544 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:40,544 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 153 [2020-10-16 03:27:40,544 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:40,620 INFO L129 PetriNetUnfolder]: 107/527 cut-off events. [2020-10-16 03:27:40,620 INFO L130 PetriNetUnfolder]: For 104/116 co-relation queries the response was YES. [2020-10-16 03:27:40,622 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 527 events. 107/527 cut-off events. For 104/116 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3741 event pairs, 14 based on Foata normal form. 8/497 useless extension candidates. Maximal degree in co-relation 1001. Up to 75 conditions per place. [2020-10-16 03:27:40,624 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 6 selfloop transitions, 4 changer transitions 3/64 dead transitions. [2020-10-16 03:27:40,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 264 flow [2020-10-16 03:27:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2020-10-16 03:27:40,626 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7581699346405228 [2020-10-16 03:27:40,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2020-10-16 03:27:40,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2020-10-16 03:27:40,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:40,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2020-10-16 03:27:40,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:40,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:40,629 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:40,629 INFO L185 Difference]: Start difference. First operand has 58 places, 62 transitions, 240 flow. Second operand 3 states and 348 transitions. [2020-10-16 03:27:40,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 264 flow [2020-10-16 03:27:40,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2020-10-16 03:27:40,634 INFO L241 Difference]: Finished difference. Result has 59 places, 60 transitions, 240 flow [2020-10-16 03:27:40,634 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2020-10-16 03:27:40,634 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2020-10-16 03:27:40,635 INFO L481 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 240 flow [2020-10-16 03:27:40,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:40,636 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 03:27:40,636 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 03:27:40,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 03:27:40,637 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 03:27:40,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 03:27:40,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1298554703, now seen corresponding path program 1 times [2020-10-16 03:27:40,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 03:27:40,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342056176] [2020-10-16 03:27:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 03:27:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 03:27:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 03:27:40,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342056176] [2020-10-16 03:27:40,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 03:27:40,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 03:27:40,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942111005] [2020-10-16 03:27:40,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 03:27:40,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 03:27:40,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 03:27:40,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 03:27:40,693 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 153 [2020-10-16 03:27:40,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 240 flow. Second operand 3 states. [2020-10-16 03:27:40,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 03:27:40,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 153 [2020-10-16 03:27:40,694 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 03:27:40,749 INFO L129 PetriNetUnfolder]: 108/436 cut-off events. [2020-10-16 03:27:40,750 INFO L130 PetriNetUnfolder]: For 91/104 co-relation queries the response was YES. [2020-10-16 03:27:40,752 INFO L80 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 436 events. 108/436 cut-off events. For 91/104 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2684 event pairs, 10 based on Foata normal form. 15/418 useless extension candidates. Maximal degree in co-relation 899. Up to 84 conditions per place. [2020-10-16 03:27:40,752 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2020-10-16 03:27:40,752 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 256 flow [2020-10-16 03:27:40,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 03:27:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 03:27:40,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2020-10-16 03:27:40,755 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2020-10-16 03:27:40,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2020-10-16 03:27:40,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2020-10-16 03:27:40,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 03:27:40,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2020-10-16 03:27:40,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 03:27:40,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 03:27:40,757 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 03:27:40,757 INFO L185 Difference]: Start difference. First operand has 59 places, 60 transitions, 240 flow. Second operand 3 states and 345 transitions. [2020-10-16 03:27:40,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 256 flow [2020-10-16 03:27:40,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 246 flow, removed 2 selfloop flow, removed 2 redundant places. [2020-10-16 03:27:40,761 INFO L241 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2020-10-16 03:27:40,762 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2020-10-16 03:27:40,762 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2020-10-16 03:27:40,762 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2020-10-16 03:27:40,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 03:27:40,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 03:27:40,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:27:40 BasicIcfg [2020-10-16 03:27:40,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 03:27:40,773 INFO L168 Benchmark]: Toolchain (without parser) took 4207.25 ms. Allocated memory was 251.7 MB in the beginning and 370.7 MB in the end (delta: 119.0 MB). Free memory was 207.0 MB in the beginning and 183.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 142.6 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:40,774 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 03:27:40,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 659.59 ms. Allocated memory was 251.7 MB in the beginning and 313.5 MB in the end (delta: 61.9 MB). Free memory was 207.0 MB in the beginning and 271.2 MB in the end (delta: -64.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:40,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.23 ms. Allocated memory is still 313.5 MB. Free memory was 271.2 MB in the beginning and 268.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:40,777 INFO L168 Benchmark]: Boogie Preprocessor took 30.60 ms. Allocated memory is still 313.5 MB. Free memory was 268.7 MB in the beginning and 266.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:40,778 INFO L168 Benchmark]: RCFGBuilder took 401.87 ms. Allocated memory is still 313.5 MB. Free memory was 266.2 MB in the beginning and 241.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:40,781 INFO L168 Benchmark]: TraceAbstraction took 3064.41 ms. Allocated memory was 313.5 MB in the beginning and 370.7 MB in the end (delta: 57.1 MB). Free memory was 241.8 MB in the beginning and 183.4 MB in the end (delta: 58.3 MB). Peak memory consumption was 115.5 MB. Max. memory is 14.2 GB. [2020-10-16 03:27:40,792 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 251.7 MB. Free memory is still 228.0 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 659.59 ms. Allocated memory was 251.7 MB in the beginning and 313.5 MB in the end (delta: 61.9 MB). Free memory was 207.0 MB in the beginning and 271.2 MB in the end (delta: -64.2 MB). Peak memory consumption was 33.6 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 45.23 ms. Allocated memory is still 313.5 MB. Free memory was 271.2 MB in the beginning and 268.7 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.60 ms. Allocated memory is still 313.5 MB. Free memory was 268.7 MB in the beginning and 266.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 401.87 ms. Allocated memory is still 313.5 MB. Free memory was 266.2 MB in the beginning and 241.8 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 3064.41 ms. Allocated memory was 313.5 MB in the beginning and 370.7 MB in the end (delta: 57.1 MB). Free memory was 241.8 MB in the beginning and 183.4 MB in the end (delta: 58.3 MB). Peak memory consumption was 115.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1795 VarBasedMoverChecksPositive, 171 VarBasedMoverChecksNegative, 114 SemBasedMoverChecksPositive, 57 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 778 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 73 PlacesBefore, 47 PlacesAfterwards, 91 TransitionsBefore, 59 TransitionsAfterwards, 3196 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 6 ChoiceCompositions, 50 TotalNumberOfCompositions, 11249 MoverChecksTotal - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 78 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 91 SDtfs, 22 SDslu, 0 SDs, 0 SdLazy, 105 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 2889 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...