/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.epf -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 00:01:11,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 00:01:11,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 00:01:11,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 00:01:11,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 00:01:11,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 00:01:11,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 00:01:11,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 00:01:11,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 00:01:11,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 00:01:11,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 00:01:11,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 00:01:11,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 00:01:11,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 00:01:11,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 00:01:11,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 00:01:11,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 00:01:11,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 00:01:11,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 00:01:11,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 00:01:11,516 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 00:01:11,517 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 00:01:11,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 00:01:11,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 00:01:11,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 00:01:11,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 00:01:11,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 00:01:11,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 00:01:11,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 00:01:11,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 00:01:11,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 00:01:11,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 00:01:11,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 00:01:11,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 00:01:11,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 00:01:11,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 00:01:11,582 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2020-10-16 00:01:11,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 00:01:11,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 00:01:11,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 00:01:11,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 00:01:11,624 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 00:01:11,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 00:01:11,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 00:01:11,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 00:01:11,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 00:01:11,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 00:01:11,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 00:01:11,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 00:01:11,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 00:01:11,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 00:01:11,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 00:01:11,628 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 00:01:11,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 00:01:11,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 00:01:11,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 00:01:11,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 00:01:11,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 00:01:11,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 00:01:11,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 00:01:11,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 00:01:11,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 00:01:11,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 00:01:11,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 00:01:11,630 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 00:01:11,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 00:01:11,897 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 00:01:11,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 00:01:11,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 00:01:11,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 00:01:11,917 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 00:01:11,917 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 00:01:12,013 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281da8bf1/d7c3c8bdd152449ab97482a4eafed23f/FLAG87ff69ecd [2020-10-16 00:01:12,502 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 00:01:12,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2020-10-16 00:01:12,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281da8bf1/d7c3c8bdd152449ab97482a4eafed23f/FLAG87ff69ecd [2020-10-16 00:01:12,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/281da8bf1/d7c3c8bdd152449ab97482a4eafed23f [2020-10-16 00:01:12,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 00:01:12,808 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 00:01:12,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 00:01:12,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 00:01:12,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 00:01:12,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:01:12" (1/1) ... [2020-10-16 00:01:12,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4923e936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:12, skipping insertion in model container [2020-10-16 00:01:12,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:01:12" (1/1) ... [2020-10-16 00:01:12,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 00:01:12,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 00:01:13,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:01:13,290 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 00:01:13,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 00:01:13,440 INFO L208 MainTranslator]: Completed translation [2020-10-16 00:01:13,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13 WrapperNode [2020-10-16 00:01:13,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 00:01:13,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 00:01:13,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 00:01:13,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 00:01:13,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (1/1) ... [2020-10-16 00:01:13,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (1/1) ... [2020-10-16 00:01:13,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 00:01:13,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 00:01:13,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 00:01:13,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 00:01:13,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (1/1) ... [2020-10-16 00:01:13,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (1/1) ... [2020-10-16 00:01:13,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (1/1) ... [2020-10-16 00:01:13,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (1/1) ... [2020-10-16 00:01:13,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (1/1) ... [2020-10-16 00:01:13,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (1/1) ... [2020-10-16 00:01:13,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (1/1) ... [2020-10-16 00:01:13,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 00:01:13,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 00:01:13,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 00:01:13,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 00:01:13,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (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 00:01:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 00:01:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-10-16 00:01:13,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-10-16 00:01:13,569 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 00:01:13,569 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 00:01:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 00:01:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 00:01:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 00:01:13,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 00:01:13,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 00:01:13,577 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 00:01:13,950 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 00:01:13,950 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-16 00:01:13,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:01:13 BoogieIcfgContainer [2020-10-16 00:01:13,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 00:01:13,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 00:01:13,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 00:01:13,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 00:01:13,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:01:12" (1/3) ... [2020-10-16 00:01:13,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59739064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:01:13, skipping insertion in model container [2020-10-16 00:01:13,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:01:13" (2/3) ... [2020-10-16 00:01:13,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59739064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:01:13, skipping insertion in model container [2020-10-16 00:01:13,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:01:13" (3/3) ... [2020-10-16 00:01:13,960 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2020-10-16 00:01:13,972 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 00:01:13,979 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-16 00:01:13,980 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 00:01:14,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,006 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,006 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,006 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,007 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,008 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,009 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,009 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,010 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,010 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,014 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,015 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,015 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,021 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,021 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,021 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,022 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 00:01:14,047 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 00:01:14,068 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 00:01:14,068 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 00:01:14,068 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 00:01:14,069 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 00:01:14,069 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 00:01:14,069 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 00:01:14,069 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 00:01:14,069 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 00:01:14,083 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 103 transitions, 228 flow [2020-10-16 00:01:14,127 INFO L129 PetriNetUnfolder]: 25/103 cut-off events. [2020-10-16 00:01:14,127 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 00:01:14,134 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 00:01:14,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 103 transitions, 228 flow [2020-10-16 00:01:14,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 91 transitions, 194 flow [2020-10-16 00:01:14,143 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 00:01:14,146 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 91 transitions, 194 flow [2020-10-16 00:01:14,148 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 91 transitions, 194 flow [2020-10-16 00:01:14,149 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 91 transitions, 194 flow [2020-10-16 00:01:14,179 INFO L129 PetriNetUnfolder]: 24/93 cut-off events. [2020-10-16 00:01:14,179 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 00:01:14,181 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 00:01:14,186 INFO L117 LiptonReduction]: Number of co-enabled transitions 3196 [2020-10-16 00:01:15,378 INFO L132 LiptonReduction]: Checked pairs total: 11249 [2020-10-16 00:01:15,379 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-16 00:01:15,382 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1241 [2020-10-16 00:01:15,387 INFO L129 PetriNetUnfolder]: 1/7 cut-off events. [2020-10-16 00:01:15,388 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:01:15,388 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:15,389 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 00:01:15,389 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 00:01:15,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:15,395 INFO L82 PathProgramCache]: Analyzing trace with hash 13952369, now seen corresponding path program 1 times [2020-10-16 00:01:15,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:15,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302601576] [2020-10-16 00:01:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:15,546 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 00:01:15,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302601576] [2020-10-16 00:01:15,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:15,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:01:15,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811846769] [2020-10-16 00:01:15,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 00:01:15,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:15,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 00:01:15,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 00:01:15,576 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 153 [2020-10-16 00:01:15,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 59 transitions, 130 flow. Second operand 2 states. [2020-10-16 00:01:15,578 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:15,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 153 [2020-10-16 00:01:15,580 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:15,594 INFO L129 PetriNetUnfolder]: 12/55 cut-off events. [2020-10-16 00:01:15,595 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 00:01:15,595 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 00:01:15,597 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 0 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2020-10-16 00:01:15,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 118 flow [2020-10-16 00:01:15,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 00:01:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-16 00:01:15,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 260 transitions. [2020-10-16 00:01:15,612 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.8496732026143791 [2020-10-16 00:01:15,613 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 260 transitions. [2020-10-16 00:01:15,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 260 transitions. [2020-10-16 00:01:15,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:15,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 260 transitions. [2020-10-16 00:01:15,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 3 states. [2020-10-16 00:01:15,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 3 states. [2020-10-16 00:01:15,628 INFO L81 ComplementDD]: Finished complementDD. Result 3 states. [2020-10-16 00:01:15,630 INFO L185 Difference]: Start difference. First operand has 47 places, 59 transitions, 130 flow. Second operand 2 states and 260 transitions. [2020-10-16 00:01:15,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 118 flow [2020-10-16 00:01:15,634 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 00:01:15,636 INFO L241 Difference]: Finished difference. Result has 44 places, 53 transitions, 110 flow [2020-10-16 00:01:15,639 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 00:01:15,640 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, -3 predicate places. [2020-10-16 00:01:15,640 INFO L481 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 110 flow [2020-10-16 00:01:15,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 00:01:15,640 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:15,641 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:15,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 00:01:15,641 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 00:01:15,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:15,642 INFO L82 PathProgramCache]: Analyzing trace with hash -2123964917, now seen corresponding path program 1 times [2020-10-16 00:01:15,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:15,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835290495] [2020-10-16 00:01:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:15,728 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 00:01:15,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835290495] [2020-10-16 00:01:15,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:15,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:01:15,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980840223] [2020-10-16 00:01:15,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:15,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:15,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:15,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:15,736 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 153 [2020-10-16 00:01:15,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 110 flow. Second operand 3 states. [2020-10-16 00:01:15,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:15,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 153 [2020-10-16 00:01:15,737 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:15,804 INFO L129 PetriNetUnfolder]: 19/101 cut-off events. [2020-10-16 00:01:15,804 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 00:01:15,805 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 00:01:15,806 INFO L132 encePairwiseOnDemand]: 148/153 looper letters, 7 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2020-10-16 00:01:15,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 136 flow [2020-10-16 00:01:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2020-10-16 00:01:15,814 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7712418300653595 [2020-10-16 00:01:15,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2020-10-16 00:01:15,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2020-10-16 00:01:15,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:15,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2020-10-16 00:01:15,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:15,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:15,825 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:15,825 INFO L185 Difference]: Start difference. First operand has 44 places, 53 transitions, 110 flow. Second operand 3 states and 354 transitions. [2020-10-16 00:01:15,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 136 flow [2020-10-16 00:01:15,826 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 00:01:15,831 INFO L241 Difference]: Finished difference. Result has 48 places, 54 transitions, 130 flow [2020-10-16 00:01:15,832 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 00:01:15,833 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2020-10-16 00:01:15,833 INFO L481 AbstractCegarLoop]: Abstraction has has 48 places, 54 transitions, 130 flow [2020-10-16 00:01:15,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:15,833 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:15,834 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 00:01:15,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 00:01:15,834 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 00:01:15,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:15,835 INFO L82 PathProgramCache]: Analyzing trace with hash 398777111, now seen corresponding path program 1 times [2020-10-16 00:01:15,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:15,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581777427] [2020-10-16 00:01:15,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:15,922 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 00:01:15,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581777427] [2020-10-16 00:01:15,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:15,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 00:01:15,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511511382] [2020-10-16 00:01:15,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:15,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:15,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:15,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:15,926 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 153 [2020-10-16 00:01:15,927 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 54 transitions, 130 flow. Second operand 3 states. [2020-10-16 00:01:15,927 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:15,927 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 153 [2020-10-16 00:01:15,927 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:15,957 INFO L129 PetriNetUnfolder]: 14/87 cut-off events. [2020-10-16 00:01:15,957 INFO L130 PetriNetUnfolder]: For 11/13 co-relation queries the response was YES. [2020-10-16 00:01:15,958 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 00:01:15,959 INFO L132 encePairwiseOnDemand]: 149/153 looper letters, 6 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2020-10-16 00:01:15,959 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 54 transitions, 146 flow [2020-10-16 00:01:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2020-10-16 00:01:15,962 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7668845315904139 [2020-10-16 00:01:15,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2020-10-16 00:01:15,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2020-10-16 00:01:15,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:15,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2020-10-16 00:01:15,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:15,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:15,966 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:15,966 INFO L185 Difference]: Start difference. First operand has 48 places, 54 transitions, 130 flow. Second operand 3 states and 352 transitions. [2020-10-16 00:01:15,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 54 transitions, 146 flow [2020-10-16 00:01:15,968 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 00:01:15,969 INFO L241 Difference]: Finished difference. Result has 49 places, 54 transitions, 134 flow [2020-10-16 00:01:15,970 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 00:01:15,970 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2020-10-16 00:01:15,970 INFO L481 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 134 flow [2020-10-16 00:01:15,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:15,970 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:15,971 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 00:01:15,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 00:01:15,971 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 00:01:15,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:15,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1903844965, now seen corresponding path program 1 times [2020-10-16 00:01:15,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:15,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353770344] [2020-10-16 00:01:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:16,010 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 00:01:16,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353770344] [2020-10-16 00:01:16,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:16,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:01:16,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664378493] [2020-10-16 00:01:16,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:16,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:16,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:16,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:16,015 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 153 [2020-10-16 00:01:16,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 134 flow. Second operand 3 states. [2020-10-16 00:01:16,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:16,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 153 [2020-10-16 00:01:16,016 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:16,131 INFO L129 PetriNetUnfolder]: 215/513 cut-off events. [2020-10-16 00:01:16,132 INFO L130 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2020-10-16 00:01:16,133 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 00:01:16,136 INFO L132 encePairwiseOnDemand]: 141/153 looper letters, 27 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2020-10-16 00:01:16,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 224 flow [2020-10-16 00:01:16,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2020-10-16 00:01:16,138 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6993464052287581 [2020-10-16 00:01:16,139 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2020-10-16 00:01:16,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2020-10-16 00:01:16,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:16,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2020-10-16 00:01:16,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:16,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:16,141 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:16,142 INFO L185 Difference]: Start difference. First operand has 49 places, 54 transitions, 134 flow. Second operand 3 states and 321 transitions. [2020-10-16 00:01:16,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 224 flow [2020-10-16 00:01:16,143 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 00:01:16,145 INFO L241 Difference]: Finished difference. Result has 52 places, 59 transitions, 190 flow [2020-10-16 00:01:16,146 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 00:01:16,146 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2020-10-16 00:01:16,146 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 190 flow [2020-10-16 00:01:16,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:16,146 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:16,146 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 00:01:16,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 00:01:16,147 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 00:01:16,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:16,147 INFO L82 PathProgramCache]: Analyzing trace with hash 338812755, now seen corresponding path program 2 times [2020-10-16 00:01:16,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:16,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861571238] [2020-10-16 00:01:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:16,177 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 00:01:16,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861571238] [2020-10-16 00:01:16,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:16,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:01:16,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192136565] [2020-10-16 00:01:16,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:16,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:16,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:16,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:16,181 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 153 [2020-10-16 00:01:16,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 190 flow. Second operand 3 states. [2020-10-16 00:01:16,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:16,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 153 [2020-10-16 00:01:16,181 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:16,253 INFO L129 PetriNetUnfolder]: 200/627 cut-off events. [2020-10-16 00:01:16,254 INFO L130 PetriNetUnfolder]: For 139/144 co-relation queries the response was YES. [2020-10-16 00:01:16,256 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 00:01:16,259 INFO L132 encePairwiseOnDemand]: 149/153 looper letters, 10 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2020-10-16 00:01:16,259 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 230 flow [2020-10-16 00:01:16,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2020-10-16 00:01:16,261 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7603485838779956 [2020-10-16 00:01:16,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2020-10-16 00:01:16,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2020-10-16 00:01:16,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:16,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2020-10-16 00:01:16,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:16,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:16,265 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:16,265 INFO L185 Difference]: Start difference. First operand has 52 places, 59 transitions, 190 flow. Second operand 3 states and 349 transitions. [2020-10-16 00:01:16,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 230 flow [2020-10-16 00:01:16,268 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 00:01:16,270 INFO L241 Difference]: Finished difference. Result has 54 places, 62 transitions, 206 flow [2020-10-16 00:01:16,270 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 00:01:16,270 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 7 predicate places. [2020-10-16 00:01:16,270 INFO L481 AbstractCegarLoop]: Abstraction has has 54 places, 62 transitions, 206 flow [2020-10-16 00:01:16,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:16,271 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:16,271 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 00:01:16,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 00:01:16,271 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 00:01:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:16,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1993299143, now seen corresponding path program 3 times [2020-10-16 00:01:16,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:16,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537501790] [2020-10-16 00:01:16,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:16,312 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 00:01:16,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537501790] [2020-10-16 00:01:16,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:16,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:01:16,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213325118] [2020-10-16 00:01:16,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:16,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:16,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:16,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:16,315 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 153 [2020-10-16 00:01:16,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 62 transitions, 206 flow. Second operand 3 states. [2020-10-16 00:01:16,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:16,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 153 [2020-10-16 00:01:16,316 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:16,432 INFO L129 PetriNetUnfolder]: 272/772 cut-off events. [2020-10-16 00:01:16,433 INFO L130 PetriNetUnfolder]: For 225/256 co-relation queries the response was YES. [2020-10-16 00:01:16,436 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 00:01:16,438 INFO L132 encePairwiseOnDemand]: 141/153 looper letters, 21 selfloop transitions, 9 changer transitions 9/72 dead transitions. [2020-10-16 00:01:16,439 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 322 flow [2020-10-16 00:01:16,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:16,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:16,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2020-10-16 00:01:16,440 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.6949891067538126 [2020-10-16 00:01:16,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2020-10-16 00:01:16,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2020-10-16 00:01:16,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:16,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2020-10-16 00:01:16,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:16,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:16,443 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:16,443 INFO L185 Difference]: Start difference. First operand has 54 places, 62 transitions, 206 flow. Second operand 3 states and 319 transitions. [2020-10-16 00:01:16,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 322 flow [2020-10-16 00:01:16,446 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 00:01:16,448 INFO L241 Difference]: Finished difference. Result has 56 places, 62 transitions, 254 flow [2020-10-16 00:01:16,448 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 00:01:16,448 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2020-10-16 00:01:16,449 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 254 flow [2020-10-16 00:01:16,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:16,449 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:16,449 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 00:01:16,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 00:01:16,449 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 00:01:16,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:16,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1355563725, now seen corresponding path program 4 times [2020-10-16 00:01:16,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:16,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987783068] [2020-10-16 00:01:16,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:16,474 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 00:01:16,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987783068] [2020-10-16 00:01:16,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:16,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:01:16,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454272547] [2020-10-16 00:01:16,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:16,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:16,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:16,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:16,477 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 153 [2020-10-16 00:01:16,478 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 254 flow. Second operand 3 states. [2020-10-16 00:01:16,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:16,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 153 [2020-10-16 00:01:16,478 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:16,543 INFO L129 PetriNetUnfolder]: 107/503 cut-off events. [2020-10-16 00:01:16,543 INFO L130 PetriNetUnfolder]: For 258/281 co-relation queries the response was YES. [2020-10-16 00:01:16,546 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 00:01:16,548 INFO L132 encePairwiseOnDemand]: 149/153 looper letters, 11 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2020-10-16 00:01:16,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 63 transitions, 274 flow [2020-10-16 00:01:16,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:16,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2020-10-16 00:01:16,551 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7581699346405228 [2020-10-16 00:01:16,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2020-10-16 00:01:16,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2020-10-16 00:01:16,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:16,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2020-10-16 00:01:16,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:16,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:16,554 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:16,554 INFO L185 Difference]: Start difference. First operand has 56 places, 62 transitions, 254 flow. Second operand 3 states and 348 transitions. [2020-10-16 00:01:16,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 63 transitions, 274 flow [2020-10-16 00:01:16,557 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 00:01:16,559 INFO L241 Difference]: Finished difference. Result has 58 places, 62 transitions, 240 flow [2020-10-16 00:01:16,559 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 00:01:16,559 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2020-10-16 00:01:16,560 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 240 flow [2020-10-16 00:01:16,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:16,560 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:16,560 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 00:01:16,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 00:01:16,560 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 00:01:16,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:16,561 INFO L82 PathProgramCache]: Analyzing trace with hash 2104674242, now seen corresponding path program 1 times [2020-10-16 00:01:16,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:16,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92301010] [2020-10-16 00:01:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:16,586 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 00:01:16,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92301010] [2020-10-16 00:01:16,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:16,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:01:16,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141494966] [2020-10-16 00:01:16,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:16,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:16,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:16,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:16,589 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 153 [2020-10-16 00:01:16,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 240 flow. Second operand 3 states. [2020-10-16 00:01:16,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:16,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 153 [2020-10-16 00:01:16,590 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:16,663 INFO L129 PetriNetUnfolder]: 107/527 cut-off events. [2020-10-16 00:01:16,663 INFO L130 PetriNetUnfolder]: For 104/116 co-relation queries the response was YES. [2020-10-16 00:01:16,665 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 00:01:16,667 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 6 selfloop transitions, 4 changer transitions 3/64 dead transitions. [2020-10-16 00:01:16,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 264 flow [2020-10-16 00:01:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:16,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2020-10-16 00:01:16,669 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7581699346405228 [2020-10-16 00:01:16,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2020-10-16 00:01:16,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2020-10-16 00:01:16,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:16,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2020-10-16 00:01:16,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:16,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:16,672 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:16,672 INFO L185 Difference]: Start difference. First operand has 58 places, 62 transitions, 240 flow. Second operand 3 states and 348 transitions. [2020-10-16 00:01:16,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 264 flow [2020-10-16 00:01:16,674 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 00:01:16,676 INFO L241 Difference]: Finished difference. Result has 59 places, 60 transitions, 240 flow [2020-10-16 00:01:16,676 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 00:01:16,676 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 12 predicate places. [2020-10-16 00:01:16,676 INFO L481 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 240 flow [2020-10-16 00:01:16,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:16,676 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 00:01:16,677 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 00:01:16,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 00:01:16,677 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 00:01:16,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 00:01:16,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1298554703, now seen corresponding path program 1 times [2020-10-16 00:01:16,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 00:01:16,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529012061] [2020-10-16 00:01:16,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 00:01:16,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 00:01:16,700 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 00:01:16,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529012061] [2020-10-16 00:01:16,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 00:01:16,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 00:01:16,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473888924] [2020-10-16 00:01:16,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 00:01:16,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 00:01:16,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 00:01:16,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 00:01:16,703 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 153 [2020-10-16 00:01:16,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 240 flow. Second operand 3 states. [2020-10-16 00:01:16,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 00:01:16,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 153 [2020-10-16 00:01:16,704 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 00:01:16,754 INFO L129 PetriNetUnfolder]: 108/436 cut-off events. [2020-10-16 00:01:16,754 INFO L130 PetriNetUnfolder]: For 91/104 co-relation queries the response was YES. [2020-10-16 00:01:16,757 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 00:01:16,757 INFO L132 encePairwiseOnDemand]: 147/153 looper letters, 0 selfloop transitions, 0 changer transitions 60/60 dead transitions. [2020-10-16 00:01:16,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 256 flow [2020-10-16 00:01:16,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 00:01:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 00:01:16,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2020-10-16 00:01:16,759 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.7516339869281046 [2020-10-16 00:01:16,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2020-10-16 00:01:16,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2020-10-16 00:01:16,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 00:01:16,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2020-10-16 00:01:16,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 00:01:16,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 00:01:16,762 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 00:01:16,762 INFO L185 Difference]: Start difference. First operand has 59 places, 60 transitions, 240 flow. Second operand 3 states and 345 transitions. [2020-10-16 00:01:16,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 256 flow [2020-10-16 00:01:16,765 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 00:01:16,766 INFO L241 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2020-10-16 00:01:16,766 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 00:01:16,766 INFO L342 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2020-10-16 00:01:16,766 INFO L481 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2020-10-16 00:01:16,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 00:01:16,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 00:01:16,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:01:16 BasicIcfg [2020-10-16 00:01:16,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 00:01:16,773 INFO L168 Benchmark]: Toolchain (without parser) took 3964.05 ms. Allocated memory was 255.9 MB in the beginning and 373.3 MB in the end (delta: 117.4 MB). Free memory was 208.7 MB in the beginning and 178.9 MB in the end (delta: 29.8 MB). Peak memory consumption was 147.2 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:16,774 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 255.9 MB. Free memory is still 229.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-16 00:01:16,775 INFO L168 Benchmark]: CACSL2BoogieTranslator took 631.57 ms. Allocated memory was 255.9 MB in the beginning and 324.5 MB in the end (delta: 68.7 MB). Free memory was 208.7 MB in the beginning and 282.4 MB in the end (delta: -73.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:16,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.78 ms. Allocated memory is still 324.5 MB. Free memory was 282.4 MB in the beginning and 279.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:16,776 INFO L168 Benchmark]: Boogie Preprocessor took 30.57 ms. Allocated memory is still 324.5 MB. Free memory was 279.9 MB in the beginning and 277.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:16,777 INFO L168 Benchmark]: RCFGBuilder took 436.03 ms. Allocated memory is still 324.5 MB. Free memory was 277.4 MB in the beginning and 253.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:16,778 INFO L168 Benchmark]: TraceAbstraction took 2817.43 ms. Allocated memory was 324.5 MB in the beginning and 373.3 MB in the end (delta: 48.8 MB). Free memory was 253.0 MB in the beginning and 178.9 MB in the end (delta: 74.1 MB). Peak memory consumption was 122.9 MB. Max. memory is 14.2 GB. [2020-10-16 00:01:16,782 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 255.9 MB. Free memory is still 229.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 631.57 ms. Allocated memory was 255.9 MB in the beginning and 324.5 MB in the end (delta: 68.7 MB). Free memory was 208.7 MB in the beginning and 282.4 MB in the end (delta: -73.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 43.78 ms. Allocated memory is still 324.5 MB. Free memory was 282.4 MB in the beginning and 279.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.57 ms. Allocated memory is still 324.5 MB. Free memory was 279.9 MB in the beginning and 277.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 436.03 ms. Allocated memory is still 324.5 MB. Free memory was 277.4 MB in the beginning and 253.0 MB in the end (delta: 24.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 14.2 GB. * TraceAbstraction took 2817.43 ms. Allocated memory was 324.5 MB in the beginning and 373.3 MB in the end (delta: 48.8 MB). Free memory was 253.0 MB in the beginning and 178.9 MB in the end (delta: 74.1 MB). Peak memory consumption was 122.9 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: 1.2s, 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: 2.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, 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...