/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-13 06:56:53,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-13 06:56:53,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-13 06:56:53,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-13 06:56:53,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-13 06:56:53,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-13 06:56:53,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-13 06:56:53,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-13 06:56:53,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-13 06:56:53,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-13 06:56:53,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-13 06:56:53,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-13 06:56:53,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-13 06:56:53,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-13 06:56:53,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-13 06:56:53,645 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-13 06:56:53,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-13 06:56:53,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-13 06:56:53,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-13 06:56:53,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-13 06:56:53,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-13 06:56:53,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-13 06:56:53,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-13 06:56:53,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-13 06:56:53,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-13 06:56:53,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-13 06:56:53,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-13 06:56:53,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-13 06:56:53,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-13 06:56:53,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-13 06:56:53,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-13 06:56:53,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-13 06:56:53,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-13 06:56:53,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-13 06:56:53,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-13 06:56:53,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-13 06:56:53,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-13 06:56:53,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-13 06:56:53,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-13 06:56:53,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-13 06:56:53,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-13 06:56:53,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2021-06-13 06:56:53,706 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-13 06:56:53,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-13 06:56:53,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-13 06:56:53,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-13 06:56:53,708 INFO L138 SettingsManager]: * Use SBE=true [2021-06-13 06:56:53,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-13 06:56:53,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-13 06:56:53,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-13 06:56:53,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-13 06:56:53,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-13 06:56:53,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-13 06:56:53,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-13 06:56:53,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-13 06:56:53,710 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-13 06:56:53,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-13 06:56:53,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-13 06:56:53,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-13 06:56:53,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-13 06:56:53,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-13 06:56:53,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-13 06:56:53,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-13 06:56:53,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 06:56:53,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-13 06:56:53,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-13 06:56:53,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-13 06:56:53,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-13 06:56:53,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-13 06:56:53,712 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-13 06:56:53,712 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-13 06:56:53,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-13 06:56:53,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-13 06:56:53,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-13 06:56:53,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-13 06:56:53,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-13 06:56:53,971 INFO L275 PluginConnector]: CDTParser initialized [2021-06-13 06:56:53,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2021-06-13 06:56:54,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/471cf98c2/6f3c591d11fc4b0ca7e4d5d8bb9ffe5f/FLAG5b09476cf [2021-06-13 06:56:54,361 INFO L306 CDTParser]: Found 1 translation units. [2021-06-13 06:56:54,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2021-06-13 06:56:54,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/471cf98c2/6f3c591d11fc4b0ca7e4d5d8bb9ffe5f/FLAG5b09476cf [2021-06-13 06:56:54,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/471cf98c2/6f3c591d11fc4b0ca7e4d5d8bb9ffe5f [2021-06-13 06:56:54,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-13 06:56:54,756 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-13 06:56:54,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-13 06:56:54,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-13 06:56:54,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-13 06:56:54,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 06:56:54" (1/1) ... [2021-06-13 06:56:54,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d275d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:54, skipping insertion in model container [2021-06-13 06:56:54,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.06 06:56:54" (1/1) ... [2021-06-13 06:56:54,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-13 06:56:54,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-13 06:56:54,892 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-13 06:56:55,008 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[32156,32169] [2021-06-13 06:56:55,046 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[34083,34096] [2021-06-13 06:56:55,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 06:56:55,056 INFO L203 MainTranslator]: Completed pre-run [2021-06-13 06:56:55,071 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-06-13 06:56:55,085 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[32156,32169] [2021-06-13 06:56:55,087 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[34083,34096] [2021-06-13 06:56:55,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-13 06:56:55,133 INFO L208 MainTranslator]: Completed translation [2021-06-13 06:56:55,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55 WrapperNode [2021-06-13 06:56:55,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-13 06:56:55,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-13 06:56:55,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-13 06:56:55,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-13 06:56:55,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... [2021-06-13 06:56:55,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... [2021-06-13 06:56:55,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-13 06:56:55,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-13 06:56:55,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-13 06:56:55,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-13 06:56:55,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... [2021-06-13 06:56:55,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... [2021-06-13 06:56:55,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... [2021-06-13 06:56:55,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... [2021-06-13 06:56:55,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... [2021-06-13 06:56:55,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... [2021-06-13 06:56:55,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... [2021-06-13 06:56:55,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-13 06:56:55,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-13 06:56:55,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-13 06:56:55,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-13 06:56:55,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-13 06:56:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-13 06:56:55,247 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-06-13 06:56:55,248 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-06-13 06:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-06-13 06:56:55,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-06-13 06:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-13 06:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-13 06:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-13 06:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-13 06:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-13 06:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-13 06:56:55,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-13 06:56:55,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-13 06:56:55,255 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-13 06:56:55,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-13 06:56:55,639 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-06-13 06:56:55,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 06:56:55 BoogieIcfgContainer [2021-06-13 06:56:55,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-13 06:56:55,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-13 06:56:55,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-13 06:56:55,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-13 06:56:55,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.06 06:56:54" (1/3) ... [2021-06-13 06:56:55,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df422ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 06:56:55, skipping insertion in model container [2021-06-13 06:56:55,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.06 06:56:55" (2/3) ... [2021-06-13 06:56:55,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df422ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.06 06:56:55, skipping insertion in model container [2021-06-13 06:56:55,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.06 06:56:55" (3/3) ... [2021-06-13 06:56:55,646 INFO L111 eAbstractionObserver]: Analyzing ICFG lamport.i [2021-06-13 06:56:55,650 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-13 06:56:55,650 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-13 06:56:55,650 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-13 06:56:55,678 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,678 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,678 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,679 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,679 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,679 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,680 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,681 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,682 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,683 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,684 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,684 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,684 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,685 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,685 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,685 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,686 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,687 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,688 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,692 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,693 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,694 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,696 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,697 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,700 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~y2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~x2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,702 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~b12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,702 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~b21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,705 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,705 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~y1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,706 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,706 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~x1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-13 06:56:55,711 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-13 06:56:55,724 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:56:55,736 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:56:55,737 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:56:55,737 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:56:55,737 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:56:55,737 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:56:55,737 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:56:55,737 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:56:55,737 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1Thread1of1ForFork1======== [2021-06-13 06:56:55,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:55,781 INFO L129 PetriNetUnfolder]: 25/131 cut-off events. [2021-06-13 06:56:55,781 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:56:55,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 131 events. 25/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 101. Up to 5 conditions per place. [2021-06-13 06:56:55,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:55,792 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 119 transitions, 250 flow [2021-06-13 06:56:55,799 INFO L129 PetriNetUnfolder]: 2/35 cut-off events. [2021-06-13 06:56:55,800 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:56:55,800 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:55,800 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:55,800 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:55,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:55,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1915636410, now seen corresponding path program 1 times [2021-06-13 06:56:55,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:55,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669348910] [2021-06-13 06:56:55,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:55,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:55,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:55,968 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:55,968 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:55,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:55,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:55,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669348910] [2021-06-13 06:56:55,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669348910] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:55,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:55,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 06:56:55,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889607989] [2021-06-13 06:56:55,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-13 06:56:55,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:55,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-13 06:56:55,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-13 06:56:55,993 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 131 [2021-06-13 06:56:56,001 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 119 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,001 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:56,002 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 131 [2021-06-13 06:56:56,002 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:56,050 INFO L129 PetriNetUnfolder]: 12/109 cut-off events. [2021-06-13 06:56:56,050 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 06:56:56,051 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 12/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 207 event pairs, 0 based on Foata normal form. 12/107 useless extension candidates. Maximal degree in co-relation 115. Up to 3 conditions per place. [2021-06-13 06:56:56,052 INFO L132 encePairwiseOnDemand]: 119/131 looper letters, 0 selfloop transitions, 0 changer transitions 0/107 dead transitions. [2021-06-13 06:56:56,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 226 flow [2021-06-13 06:56:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 06:56:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-13 06:56:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2021-06-13 06:56:56,063 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9541984732824428 [2021-06-13 06:56:56,064 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2021-06-13 06:56:56,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2021-06-13 06:56:56,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:56,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2021-06-13 06:56:56,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,072 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,074 INFO L185 Difference]: Start difference. First operand has 101 places, 119 transitions, 250 flow. Second operand 2 states and 250 transitions. [2021-06-13 06:56:56,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 226 flow [2021-06-13 06:56:56,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 107 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 06:56:56,081 INFO L241 Difference]: Finished difference. Result has 98 places, 107 transitions, 218 flow [2021-06-13 06:56:56,083 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=218, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2021-06-13 06:56:56,083 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2021-06-13 06:56:56,083 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 218 flow [2021-06-13 06:56:56,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,084 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:56,084 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:56,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-13 06:56:56,084 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash -977585031, now seen corresponding path program 1 times [2021-06-13 06:56:56,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:56,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120682571] [2021-06-13 06:56:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:56,161 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,161 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:56,162 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,162 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:56,169 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:56,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:56,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120682571] [2021-06-13 06:56:56,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120682571] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:56,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:56,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 06:56:56,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141903276] [2021-06-13 06:56:56,173 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 06:56:56,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:56,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 06:56:56,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 06:56:56,178 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2021-06-13 06:56:56,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:56,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2021-06-13 06:56:56,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:56,236 INFO L129 PetriNetUnfolder]: 19/169 cut-off events. [2021-06-13 06:56:56,237 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:56:56,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 169 events. 19/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 511 event pairs, 2 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 199. Up to 18 conditions per place. [2021-06-13 06:56:56,240 INFO L132 encePairwiseOnDemand]: 126/131 looper letters, 5 selfloop transitions, 2 changer transitions 3/110 dead transitions. [2021-06-13 06:56:56,242 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 110 transitions, 244 flow [2021-06-13 06:56:56,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 06:56:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 06:56:56,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-06-13 06:56:56,247 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8854961832061069 [2021-06-13 06:56:56,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-06-13 06:56:56,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-06-13 06:56:56,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:56,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-06-13 06:56:56,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,253 INFO L185 Difference]: Start difference. First operand has 98 places, 107 transitions, 218 flow. Second operand 3 states and 348 transitions. [2021-06-13 06:56:56,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 110 transitions, 244 flow [2021-06-13 06:56:56,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:56:56,256 INFO L241 Difference]: Finished difference. Result has 102 places, 107 transitions, 232 flow [2021-06-13 06:56:56,257 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=102, PETRI_TRANSITIONS=107} [2021-06-13 06:56:56,257 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 1 predicate places. [2021-06-13 06:56:56,257 INFO L482 AbstractCegarLoop]: Abstraction has has 102 places, 107 transitions, 232 flow [2021-06-13 06:56:56,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,257 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:56,257 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:56,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-13 06:56:56,258 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:56,260 INFO L82 PathProgramCache]: Analyzing trace with hash 414682995, now seen corresponding path program 1 times [2021-06-13 06:56:56,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:56,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577130299] [2021-06-13 06:56:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:56,358 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:56,359 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,359 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:56,362 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:56,366 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,367 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:56,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:56,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:56,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577130299] [2021-06-13 06:56:56,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577130299] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:56,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:56,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:56,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570196619] [2021-06-13 06:56:56,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:56,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:56,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:56,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:56,369 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 131 [2021-06-13 06:56:56,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 107 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:56,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 131 [2021-06-13 06:56:56,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:56,579 INFO L129 PetriNetUnfolder]: 395/1168 cut-off events. [2021-06-13 06:56:56,579 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-06-13 06:56:56,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1168 events. 395/1168 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7526 event pairs, 45 based on Foata normal form. 0/1011 useless extension candidates. Maximal degree in co-relation 1799. Up to 252 conditions per place. [2021-06-13 06:56:56,585 INFO L132 encePairwiseOnDemand]: 117/131 looper letters, 45 selfloop transitions, 5 changer transitions 29/156 dead transitions. [2021-06-13 06:56:56,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 156 transitions, 481 flow [2021-06-13 06:56:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2021-06-13 06:56:56,587 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8366412213740458 [2021-06-13 06:56:56,587 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2021-06-13 06:56:56,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2021-06-13 06:56:56,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:56,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2021-06-13 06:56:56,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,591 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,591 INFO L185 Difference]: Start difference. First operand has 102 places, 107 transitions, 232 flow. Second operand 5 states and 548 transitions. [2021-06-13 06:56:56,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 156 transitions, 481 flow [2021-06-13 06:56:56,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 156 transitions, 477 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-13 06:56:56,600 INFO L241 Difference]: Finished difference. Result has 108 places, 108 transitions, 295 flow [2021-06-13 06:56:56,600 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=295, PETRI_PLACES=108, PETRI_TRANSITIONS=108} [2021-06-13 06:56:56,600 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 7 predicate places. [2021-06-13 06:56:56,600 INFO L482 AbstractCegarLoop]: Abstraction has has 108 places, 108 transitions, 295 flow [2021-06-13 06:56:56,600 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,600 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:56,601 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:56,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-13 06:56:56,601 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:56,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1293828673, now seen corresponding path program 2 times [2021-06-13 06:56:56,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:56,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827726691] [2021-06-13 06:56:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:56,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:56,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:56,656 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:56,661 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:56,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:56,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827726691] [2021-06-13 06:56:56,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827726691] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:56,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:56,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:56,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131102234] [2021-06-13 06:56:56,663 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:56,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:56,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:56,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:56,664 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 131 [2021-06-13 06:56:56,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 108 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:56,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 131 [2021-06-13 06:56:56,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:56,823 INFO L129 PetriNetUnfolder]: 284/1322 cut-off events. [2021-06-13 06:56:56,823 INFO L130 PetriNetUnfolder]: For 156/170 co-relation queries the response was YES. [2021-06-13 06:56:56,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 1322 events. 284/1322 cut-off events. For 156/170 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 9420 event pairs, 19 based on Foata normal form. 1/1155 useless extension candidates. Maximal degree in co-relation 1999. Up to 163 conditions per place. [2021-06-13 06:56:56,830 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 17 selfloop transitions, 6 changer transitions 0/123 dead transitions. [2021-06-13 06:56:56,830 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 123 transitions, 371 flow [2021-06-13 06:56:56,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2021-06-13 06:56:56,832 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8839694656488549 [2021-06-13 06:56:56,832 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2021-06-13 06:56:56,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2021-06-13 06:56:56,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:56,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2021-06-13 06:56:56,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,835 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,835 INFO L185 Difference]: Start difference. First operand has 108 places, 108 transitions, 295 flow. Second operand 5 states and 579 transitions. [2021-06-13 06:56:56,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 123 transitions, 371 flow [2021-06-13 06:56:56,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 123 transitions, 355 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-06-13 06:56:56,841 INFO L241 Difference]: Finished difference. Result has 111 places, 114 transitions, 329 flow [2021-06-13 06:56:56,841 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=111, PETRI_TRANSITIONS=114} [2021-06-13 06:56:56,842 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 10 predicate places. [2021-06-13 06:56:56,842 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 114 transitions, 329 flow [2021-06-13 06:56:56,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,842 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:56,842 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:56,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-13 06:56:56,842 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:56,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:56,843 INFO L82 PathProgramCache]: Analyzing trace with hash -774425511, now seen corresponding path program 3 times [2021-06-13 06:56:56,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:56,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813399465] [2021-06-13 06:56:56,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:56,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,883 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:56,883 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,884 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:56,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:56,891 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:56,892 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:56,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:56,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813399465] [2021-06-13 06:56:56,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813399465] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:56,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:56,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:56,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955935215] [2021-06-13 06:56:56,895 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:56,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:56,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:56,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:56,896 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 131 [2021-06-13 06:56:56,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 114 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:56,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:56,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 131 [2021-06-13 06:56:56,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:57,278 INFO L129 PetriNetUnfolder]: 1072/3654 cut-off events. [2021-06-13 06:56:57,278 INFO L130 PetriNetUnfolder]: For 1166/1219 co-relation queries the response was YES. [2021-06-13 06:56:57,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6892 conditions, 3654 events. 1072/3654 cut-off events. For 1166/1219 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 31371 event pairs, 123 based on Foata normal form. 27/3344 useless extension candidates. Maximal degree in co-relation 6881. Up to 806 conditions per place. [2021-06-13 06:56:57,298 INFO L132 encePairwiseOnDemand]: 117/131 looper letters, 61 selfloop transitions, 16 changer transitions 2/162 dead transitions. [2021-06-13 06:56:57,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 162 transitions, 623 flow [2021-06-13 06:56:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:57,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2021-06-13 06:56:57,299 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8351145038167939 [2021-06-13 06:56:57,299 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2021-06-13 06:56:57,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2021-06-13 06:56:57,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:57,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2021-06-13 06:56:57,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,302 INFO L185 Difference]: Start difference. First operand has 111 places, 114 transitions, 329 flow. Second operand 5 states and 547 transitions. [2021-06-13 06:56:57,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 162 transitions, 623 flow [2021-06-13 06:56:57,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 162 transitions, 623 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:56:57,306 INFO L241 Difference]: Finished difference. Result has 119 places, 127 transitions, 467 flow [2021-06-13 06:56:57,306 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=467, PETRI_PLACES=119, PETRI_TRANSITIONS=127} [2021-06-13 06:56:57,306 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 18 predicate places. [2021-06-13 06:56:57,306 INFO L482 AbstractCegarLoop]: Abstraction has has 119 places, 127 transitions, 467 flow [2021-06-13 06:56:57,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,306 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:57,307 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:57,307 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-13 06:56:57,307 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:57,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash 627648925, now seen corresponding path program 4 times [2021-06-13 06:56:57,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:57,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330633955] [2021-06-13 06:56:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:57,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:57,324 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:57,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:57,330 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,330 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:57,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:57,331 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330633955] [2021-06-13 06:56:57,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330633955] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:57,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:57,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:57,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099020756] [2021-06-13 06:56:57,331 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:57,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:57,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:57,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:57,332 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 131 [2021-06-13 06:56:57,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 127 transitions, 467 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:57,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 131 [2021-06-13 06:56:57,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:57,572 INFO L129 PetriNetUnfolder]: 627/2999 cut-off events. [2021-06-13 06:56:57,572 INFO L130 PetriNetUnfolder]: For 1695/1773 co-relation queries the response was YES. [2021-06-13 06:56:57,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5946 conditions, 2999 events. 627/2999 cut-off events. For 1695/1773 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 26284 event pairs, 50 based on Foata normal form. 35/2917 useless extension candidates. Maximal degree in co-relation 5931. Up to 409 conditions per place. [2021-06-13 06:56:57,589 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 23 selfloop transitions, 11 changer transitions 0/147 dead transitions. [2021-06-13 06:56:57,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 147 transitions, 628 flow [2021-06-13 06:56:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:57,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2021-06-13 06:56:57,591 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8854961832061069 [2021-06-13 06:56:57,591 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2021-06-13 06:56:57,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2021-06-13 06:56:57,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:57,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2021-06-13 06:56:57,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,593 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,594 INFO L185 Difference]: Start difference. First operand has 119 places, 127 transitions, 467 flow. Second operand 5 states and 580 transitions. [2021-06-13 06:56:57,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 147 transitions, 628 flow [2021-06-13 06:56:57,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 147 transitions, 628 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:56:57,600 INFO L241 Difference]: Finished difference. Result has 127 places, 135 transitions, 561 flow [2021-06-13 06:56:57,600 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=127, PETRI_TRANSITIONS=135} [2021-06-13 06:56:57,600 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 26 predicate places. [2021-06-13 06:56:57,600 INFO L482 AbstractCegarLoop]: Abstraction has has 127 places, 135 transitions, 561 flow [2021-06-13 06:56:57,601 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,601 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:57,601 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:57,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-13 06:56:57,601 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:57,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:57,601 INFO L82 PathProgramCache]: Analyzing trace with hash -243994529, now seen corresponding path program 1 times [2021-06-13 06:56:57,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:57,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519487410] [2021-06-13 06:56:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:57,630 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:57,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:57,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 06:56:57,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:57,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:57,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519487410] [2021-06-13 06:56:57,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519487410] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:57,639 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:57,639 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:57,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348511486] [2021-06-13 06:56:57,639 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:57,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:57,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:57,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:57,640 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 131 [2021-06-13 06:56:57,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 135 transitions, 561 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:57,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 131 [2021-06-13 06:56:57,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:57,893 INFO L129 PetriNetUnfolder]: 589/2749 cut-off events. [2021-06-13 06:56:57,893 INFO L130 PetriNetUnfolder]: For 1269/1318 co-relation queries the response was YES. [2021-06-13 06:56:57,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5556 conditions, 2749 events. 589/2749 cut-off events. For 1269/1318 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24413 event pairs, 55 based on Foata normal form. 14/2655 useless extension candidates. Maximal degree in co-relation 5537. Up to 331 conditions per place. [2021-06-13 06:56:57,908 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 12 selfloop transitions, 10 changer transitions 5/147 dead transitions. [2021-06-13 06:56:57,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 147 transitions, 625 flow [2021-06-13 06:56:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 571 transitions. [2021-06-13 06:56:57,910 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8717557251908397 [2021-06-13 06:56:57,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 571 transitions. [2021-06-13 06:56:57,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 571 transitions. [2021-06-13 06:56:57,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:57,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 571 transitions. [2021-06-13 06:56:57,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,914 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,914 INFO L185 Difference]: Start difference. First operand has 127 places, 135 transitions, 561 flow. Second operand 5 states and 571 transitions. [2021-06-13 06:56:57,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 147 transitions, 625 flow [2021-06-13 06:56:57,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 147 transitions, 621 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-06-13 06:56:57,921 INFO L241 Difference]: Finished difference. Result has 134 places, 137 transitions, 590 flow [2021-06-13 06:56:57,921 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=134, PETRI_TRANSITIONS=137} [2021-06-13 06:56:57,922 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 33 predicate places. [2021-06-13 06:56:57,922 INFO L482 AbstractCegarLoop]: Abstraction has has 134 places, 137 transitions, 590 flow [2021-06-13 06:56:57,922 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,922 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:57,922 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:57,922 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-13 06:56:57,922 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:57,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:57,923 INFO L82 PathProgramCache]: Analyzing trace with hash -804871532, now seen corresponding path program 1 times [2021-06-13 06:56:57,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:57,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931773342] [2021-06-13 06:56:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:57,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:57,954 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,955 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:57,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:57,958 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,958 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 06:56:57,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:57,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:57,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:57,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:57,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931773342] [2021-06-13 06:56:57,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931773342] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:57,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:57,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:57,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449635718] [2021-06-13 06:56:57,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:57,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:57,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:57,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:57,965 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 131 [2021-06-13 06:56:57,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 137 transitions, 590 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:57,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:57,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 131 [2021-06-13 06:56:57,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:58,166 INFO L129 PetriNetUnfolder]: 504/2507 cut-off events. [2021-06-13 06:56:58,167 INFO L130 PetriNetUnfolder]: For 1147/1183 co-relation queries the response was YES. [2021-06-13 06:56:58,174 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5318 conditions, 2507 events. 504/2507 cut-off events. For 1147/1183 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21968 event pairs, 35 based on Foata normal form. 8/2445 useless extension candidates. Maximal degree in co-relation 5295. Up to 293 conditions per place. [2021-06-13 06:56:58,175 INFO L132 encePairwiseOnDemand]: 125/131 looper letters, 0 selfloop transitions, 0 changer transitions 145/145 dead transitions. [2021-06-13 06:56:58,175 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 145 transitions, 631 flow [2021-06-13 06:56:58,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 568 transitions. [2021-06-13 06:56:58,177 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.867175572519084 [2021-06-13 06:56:58,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 568 transitions. [2021-06-13 06:56:58,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 568 transitions. [2021-06-13 06:56:58,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:58,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 568 transitions. [2021-06-13 06:56:58,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,179 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,179 INFO L185 Difference]: Start difference. First operand has 134 places, 137 transitions, 590 flow. Second operand 5 states and 568 transitions. [2021-06-13 06:56:58,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 145 transitions, 631 flow [2021-06-13 06:56:58,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 145 transitions, 619 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-06-13 06:56:58,185 INFO L241 Difference]: Finished difference. Result has 135 places, 0 transitions, 0 flow [2021-06-13 06:56:58,186 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=135, PETRI_TRANSITIONS=0} [2021-06-13 06:56:58,186 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 34 predicate places. [2021-06-13 06:56:58,186 INFO L482 AbstractCegarLoop]: Abstraction has has 135 places, 0 transitions, 0 flow [2021-06-13 06:56:58,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,187 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-13 06:56:58,187 INFO L301 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork1 was SAFE (1/5) [2021-06-13 06:56:58,189 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:56:58,190 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:56:58,190 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:56:58,190 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:56:58,190 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:56:58,190 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:56:58,190 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:56:58,190 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:56:58,190 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2======== [2021-06-13 06:56:58,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:58,201 INFO L129 PetriNetUnfolder]: 25/131 cut-off events. [2021-06-13 06:56:58,202 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:56:58,202 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 131 events. 25/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 101. Up to 5 conditions per place. [2021-06-13 06:56:58,202 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:58,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 06:56:58,202 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 06:56:58,202 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:56:58,203 INFO L301 ceAbstractionStarter]: Result for error location thr2 was SAFE (2/5) [2021-06-13 06:56:58,203 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:56:58,204 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:56:58,204 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:56:58,204 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:56:58,204 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:56:58,204 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:56:58,204 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:56:58,204 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:56:58,204 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr1======== [2021-06-13 06:56:58,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:58,211 INFO L129 PetriNetUnfolder]: 25/131 cut-off events. [2021-06-13 06:56:58,211 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:56:58,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 131 events. 25/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 101. Up to 5 conditions per place. [2021-06-13 06:56:58,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:58,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 06:56:58,212 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 06:56:58,212 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:56:58,212 INFO L301 ceAbstractionStarter]: Result for error location thr1 was SAFE (3/5) [2021-06-13 06:56:58,213 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-13 06:56:58,213 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:56:58,213 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:56:58,213 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:56:58,213 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:56:58,213 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:56:58,213 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:56:58,213 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:56:58,214 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-13 06:56:58,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:58,220 INFO L129 PetriNetUnfolder]: 25/131 cut-off events. [2021-06-13 06:56:58,220 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:56:58,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 131 events. 25/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 101. Up to 5 conditions per place. [2021-06-13 06:56:58,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:58,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2021-06-13 06:56:58,221 INFO L129 PetriNetUnfolder]: 0/0 cut-off events. [2021-06-13 06:56:58,221 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:56:58,222 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (4/5) [2021-06-13 06:56:58,222 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-13 06:56:58,222 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-13 06:56:58,222 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-13 06:56:58,222 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-13 06:56:58,222 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-13 06:56:58,222 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-13 06:56:58,222 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-13 06:56:58,222 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-13 06:56:58,223 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thr2Thread1of1ForFork0======== [2021-06-13 06:56:58,223 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:58,230 INFO L129 PetriNetUnfolder]: 25/131 cut-off events. [2021-06-13 06:56:58,230 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-06-13 06:56:58,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 131 events. 25/131 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 277 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 101. Up to 5 conditions per place. [2021-06-13 06:56:58,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 112 places, 131 transitions, 284 flow [2021-06-13 06:56:58,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 119 transitions, 250 flow [2021-06-13 06:56:58,235 INFO L129 PetriNetUnfolder]: 8/71 cut-off events. [2021-06-13 06:56:58,235 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-06-13 06:56:58,235 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:58,235 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:58,235 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:58,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:58,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1479514535, now seen corresponding path program 1 times [2021-06-13 06:56:58,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:58,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517741224] [2021-06-13 06:56:58,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:58,243 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:58,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:58,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517741224] [2021-06-13 06:56:58,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517741224] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:58,249 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:58,249 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-13 06:56:58,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434077011] [2021-06-13 06:56:58,250 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-13 06:56:58,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:58,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-13 06:56:58,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-13 06:56:58,251 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 131 [2021-06-13 06:56:58,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 119 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:58,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 131 [2021-06-13 06:56:58,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:58,259 INFO L129 PetriNetUnfolder]: 12/109 cut-off events. [2021-06-13 06:56:58,259 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-06-13 06:56:58,259 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 109 events. 12/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 207 event pairs, 0 based on Foata normal form. 12/107 useless extension candidates. Maximal degree in co-relation 115. Up to 3 conditions per place. [2021-06-13 06:56:58,260 INFO L132 encePairwiseOnDemand]: 119/131 looper letters, 0 selfloop transitions, 0 changer transitions 0/107 dead transitions. [2021-06-13 06:56:58,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 107 transitions, 226 flow [2021-06-13 06:56:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-13 06:56:58,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-13 06:56:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2021-06-13 06:56:58,260 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.9541984732824428 [2021-06-13 06:56:58,260 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2021-06-13 06:56:58,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2021-06-13 06:56:58,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:58,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2021-06-13 06:56:58,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,262 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,262 INFO L185 Difference]: Start difference. First operand has 101 places, 119 transitions, 250 flow. Second operand 2 states and 250 transitions. [2021-06-13 06:56:58,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 107 transitions, 226 flow [2021-06-13 06:56:58,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 107 transitions, 218 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-13 06:56:58,263 INFO L241 Difference]: Finished difference. Result has 98 places, 107 transitions, 218 flow [2021-06-13 06:56:58,263 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=218, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2021-06-13 06:56:58,263 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, -3 predicate places. [2021-06-13 06:56:58,263 INFO L482 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 218 flow [2021-06-13 06:56:58,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,263 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:58,263 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:58,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-13 06:56:58,264 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:58,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:58,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1653746266, now seen corresponding path program 1 times [2021-06-13 06:56:58,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:58,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604991152] [2021-06-13 06:56:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:58,281 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,282 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,282 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 06:56:58,284 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:58,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:58,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604991152] [2021-06-13 06:56:58,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604991152] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:58,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:58,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-13 06:56:58,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335399886] [2021-06-13 06:56:58,285 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-13 06:56:58,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:58,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-13 06:56:58,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-13 06:56:58,286 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 131 [2021-06-13 06:56:58,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:58,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 131 [2021-06-13 06:56:58,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:58,309 INFO L129 PetriNetUnfolder]: 19/169 cut-off events. [2021-06-13 06:56:58,309 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-13 06:56:58,310 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 169 events. 19/169 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 525 event pairs, 2 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 199. Up to 19 conditions per place. [2021-06-13 06:56:58,310 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 6 selfloop transitions, 2 changer transitions 2/110 dead transitions. [2021-06-13 06:56:58,310 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 110 transitions, 244 flow [2021-06-13 06:56:58,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-13 06:56:58,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-13 06:56:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2021-06-13 06:56:58,311 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8854961832061069 [2021-06-13 06:56:58,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2021-06-13 06:56:58,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2021-06-13 06:56:58,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:58,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2021-06-13 06:56:58,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,313 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,313 INFO L185 Difference]: Start difference. First operand has 98 places, 107 transitions, 218 flow. Second operand 3 states and 348 transitions. [2021-06-13 06:56:58,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 110 transitions, 244 flow [2021-06-13 06:56:58,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 110 transitions, 244 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:56:58,314 INFO L241 Difference]: Finished difference. Result has 101 places, 108 transitions, 232 flow [2021-06-13 06:56:58,315 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=101, PETRI_TRANSITIONS=108} [2021-06-13 06:56:58,315 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 0 predicate places. [2021-06-13 06:56:58,315 INFO L482 AbstractCegarLoop]: Abstraction has has 101 places, 108 transitions, 232 flow [2021-06-13 06:56:58,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,315 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:58,316 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:58,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-13 06:56:58,316 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:58,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:58,316 INFO L82 PathProgramCache]: Analyzing trace with hash 300629937, now seen corresponding path program 1 times [2021-06-13 06:56:58,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:58,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55465768] [2021-06-13 06:56:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:58,338 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,338 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,339 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:58,341 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,341 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:58,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:58,343 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:58,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55465768] [2021-06-13 06:56:58,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55465768] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:58,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:58,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:58,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671498008] [2021-06-13 06:56:58,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:58,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:58,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:58,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:58,345 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 131 [2021-06-13 06:56:58,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 108 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:58,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 131 [2021-06-13 06:56:58,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:58,488 INFO L129 PetriNetUnfolder]: 392/1161 cut-off events. [2021-06-13 06:56:58,488 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2021-06-13 06:56:58,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 1161 events. 392/1161 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7701 event pairs, 41 based on Foata normal form. 0/1000 useless extension candidates. Maximal degree in co-relation 1771. Up to 257 conditions per place. [2021-06-13 06:56:58,493 INFO L132 encePairwiseOnDemand]: 117/131 looper letters, 45 selfloop transitions, 5 changer transitions 28/156 dead transitions. [2021-06-13 06:56:58,493 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 156 transitions, 476 flow [2021-06-13 06:56:58,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:58,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2021-06-13 06:56:58,495 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8351145038167939 [2021-06-13 06:56:58,495 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2021-06-13 06:56:58,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2021-06-13 06:56:58,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:58,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2021-06-13 06:56:58,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,497 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,497 INFO L185 Difference]: Start difference. First operand has 101 places, 108 transitions, 232 flow. Second operand 5 states and 547 transitions. [2021-06-13 06:56:58,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 156 transitions, 476 flow [2021-06-13 06:56:58,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 156 transitions, 474 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-13 06:56:58,499 INFO L241 Difference]: Finished difference. Result has 108 places, 109 transitions, 297 flow [2021-06-13 06:56:58,499 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2021-06-13 06:56:58,499 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 7 predicate places. [2021-06-13 06:56:58,500 INFO L482 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 297 flow [2021-06-13 06:56:58,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,501 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:58,501 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:58,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-13 06:56:58,501 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:58,501 INFO L82 PathProgramCache]: Analyzing trace with hash -759889703, now seen corresponding path program 2 times [2021-06-13 06:56:58,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:58,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269220429] [2021-06-13 06:56:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:58,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:58,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:58,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:58,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:58,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269220429] [2021-06-13 06:56:58,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269220429] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:58,526 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:58,526 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:58,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507710982] [2021-06-13 06:56:58,526 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:58,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:58,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:58,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:58,527 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 131 [2021-06-13 06:56:58,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:58,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 131 [2021-06-13 06:56:58,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:58,640 INFO L129 PetriNetUnfolder]: 346/1560 cut-off events. [2021-06-13 06:56:58,640 INFO L130 PetriNetUnfolder]: For 175/181 co-relation queries the response was YES. [2021-06-13 06:56:58,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 1560 events. 346/1560 cut-off events. For 175/181 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 12111 event pairs, 26 based on Foata normal form. 1/1331 useless extension candidates. Maximal degree in co-relation 2280. Up to 178 conditions per place. [2021-06-13 06:56:58,648 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 17 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2021-06-13 06:56:58,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 124 transitions, 373 flow [2021-06-13 06:56:58,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:58,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 579 transitions. [2021-06-13 06:56:58,650 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8839694656488549 [2021-06-13 06:56:58,650 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 579 transitions. [2021-06-13 06:56:58,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 579 transitions. [2021-06-13 06:56:58,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:58,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 579 transitions. [2021-06-13 06:56:58,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.8) internal successors, (579), 5 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,652 INFO L185 Difference]: Start difference. First operand has 108 places, 109 transitions, 297 flow. Second operand 5 states and 579 transitions. [2021-06-13 06:56:58,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 124 transitions, 373 flow [2021-06-13 06:56:58,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 124 transitions, 357 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-06-13 06:56:58,654 INFO L241 Difference]: Finished difference. Result has 111 places, 115 transitions, 331 flow [2021-06-13 06:56:58,654 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=331, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2021-06-13 06:56:58,655 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 10 predicate places. [2021-06-13 06:56:58,655 INFO L482 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 331 flow [2021-06-13 06:56:58,656 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,656 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:58,656 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:58,656 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-13 06:56:58,656 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:58,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:58,656 INFO L82 PathProgramCache]: Analyzing trace with hash 966170159, now seen corresponding path program 3 times [2021-06-13 06:56:58,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:58,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900822058] [2021-06-13 06:56:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:58,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,676 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:58,678 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:58,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:58,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:58,681 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900822058] [2021-06-13 06:56:58,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900822058] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:58,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:58,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:58,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225666850] [2021-06-13 06:56:58,681 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:58,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:58,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:58,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:58,683 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 131 [2021-06-13 06:56:58,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 331 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:58,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 131 [2021-06-13 06:56:58,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:58,938 INFO L129 PetriNetUnfolder]: 1008/3262 cut-off events. [2021-06-13 06:56:58,938 INFO L130 PetriNetUnfolder]: For 1226/1263 co-relation queries the response was YES. [2021-06-13 06:56:58,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6457 conditions, 3262 events. 1008/3262 cut-off events. For 1226/1263 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 27402 event pairs, 124 based on Foata normal form. 20/2963 useless extension candidates. Maximal degree in co-relation 6446. Up to 816 conditions per place. [2021-06-13 06:56:58,955 INFO L132 encePairwiseOnDemand]: 117/131 looper letters, 51 selfloop transitions, 6 changer transitions 23/164 dead transitions. [2021-06-13 06:56:58,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 164 transitions, 630 flow [2021-06-13 06:56:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:58,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2021-06-13 06:56:58,956 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8366412213740458 [2021-06-13 06:56:58,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2021-06-13 06:56:58,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2021-06-13 06:56:58,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:58,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2021-06-13 06:56:58,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,959 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,959 INFO L185 Difference]: Start difference. First operand has 111 places, 115 transitions, 331 flow. Second operand 5 states and 548 transitions. [2021-06-13 06:56:58,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 164 transitions, 630 flow [2021-06-13 06:56:58,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 164 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:56:58,963 INFO L241 Difference]: Finished difference. Result has 119 places, 118 transitions, 407 flow [2021-06-13 06:56:58,963 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=119, PETRI_TRANSITIONS=118} [2021-06-13 06:56:58,963 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 18 predicate places. [2021-06-13 06:56:58,963 INFO L482 AbstractCegarLoop]: Abstraction has has 119 places, 118 transitions, 407 flow [2021-06-13 06:56:58,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,964 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:58,964 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:58,964 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-13 06:56:58,964 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:58,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:58,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1085339855, now seen corresponding path program 4 times [2021-06-13 06:56:58,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:58,964 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130042197] [2021-06-13 06:56:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:58,979 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,983 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,983 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:58,985 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:58,988 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:58,988 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:58,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:58,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130042197] [2021-06-13 06:56:58,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130042197] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:58,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:58,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:58,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825718932] [2021-06-13 06:56:58,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:58,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:58,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:58,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:58,990 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 131 [2021-06-13 06:56:58,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 118 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:58,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:58,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 131 [2021-06-13 06:56:58,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:59,171 INFO L129 PetriNetUnfolder]: 576/2797 cut-off events. [2021-06-13 06:56:59,171 INFO L130 PetriNetUnfolder]: For 1585/1630 co-relation queries the response was YES. [2021-06-13 06:56:59,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5556 conditions, 2797 events. 576/2797 cut-off events. For 1585/1630 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 23980 event pairs, 42 based on Foata normal form. 16/2696 useless extension candidates. Maximal degree in co-relation 5541. Up to 424 conditions per place. [2021-06-13 06:56:59,185 INFO L132 encePairwiseOnDemand]: 127/131 looper letters, 23 selfloop transitions, 11 changer transitions 0/138 dead transitions. [2021-06-13 06:56:59,185 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 138 transitions, 568 flow [2021-06-13 06:56:59,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2021-06-13 06:56:59,186 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8854961832061069 [2021-06-13 06:56:59,186 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2021-06-13 06:56:59,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2021-06-13 06:56:59,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:59,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2021-06-13 06:56:59,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,188 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,188 INFO L185 Difference]: Start difference. First operand has 119 places, 118 transitions, 407 flow. Second operand 5 states and 580 transitions. [2021-06-13 06:56:59,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 138 transitions, 568 flow [2021-06-13 06:56:59,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 138 transitions, 548 flow, removed 10 selfloop flow, removed 1 redundant places. [2021-06-13 06:56:59,194 INFO L241 Difference]: Finished difference. Result has 125 places, 126 transitions, 481 flow [2021-06-13 06:56:59,194 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=481, PETRI_PLACES=125, PETRI_TRANSITIONS=126} [2021-06-13 06:56:59,194 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 24 predicate places. [2021-06-13 06:56:59,194 INFO L482 AbstractCegarLoop]: Abstraction has has 125 places, 126 transitions, 481 flow [2021-06-13 06:56:59,194 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,194 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:59,194 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:59,194 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-13 06:56:59,194 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:59,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:59,195 INFO L82 PathProgramCache]: Analyzing trace with hash 86402841, now seen corresponding path program 1 times [2021-06-13 06:56:59,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:59,195 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170959624] [2021-06-13 06:56:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:59,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:59,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:59,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:59,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:59,216 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:59,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 06:56:59,219 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:59,219 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:59,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:59,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170959624] [2021-06-13 06:56:59,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170959624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:59,220 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:59,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:59,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310296639] [2021-06-13 06:56:59,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:59,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:59,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:59,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:59,221 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 131 [2021-06-13 06:56:59,221 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 126 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,221 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:59,221 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 131 [2021-06-13 06:56:59,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:59,393 INFO L129 PetriNetUnfolder]: 486/2477 cut-off events. [2021-06-13 06:56:59,394 INFO L130 PetriNetUnfolder]: For 997/1022 co-relation queries the response was YES. [2021-06-13 06:56:59,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4676 conditions, 2477 events. 486/2477 cut-off events. For 997/1022 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21562 event pairs, 35 based on Foata normal form. 5/2333 useless extension candidates. Maximal degree in co-relation 4658. Up to 361 conditions per place. [2021-06-13 06:56:59,402 INFO L132 encePairwiseOnDemand]: 125/131 looper letters, 11 selfloop transitions, 9 changer transitions 2/137 dead transitions. [2021-06-13 06:56:59,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 137 transitions, 543 flow [2021-06-13 06:56:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 567 transitions. [2021-06-13 06:56:59,403 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8656488549618321 [2021-06-13 06:56:59,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 567 transitions. [2021-06-13 06:56:59,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 567 transitions. [2021-06-13 06:56:59,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:59,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 567 transitions. [2021-06-13 06:56:59,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,405 INFO L185 Difference]: Start difference. First operand has 125 places, 126 transitions, 481 flow. Second operand 5 states and 567 transitions. [2021-06-13 06:56:59,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 137 transitions, 543 flow [2021-06-13 06:56:59,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 137 transitions, 543 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-13 06:56:59,409 INFO L241 Difference]: Finished difference. Result has 132 places, 130 transitions, 515 flow [2021-06-13 06:56:59,410 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=515, PETRI_PLACES=132, PETRI_TRANSITIONS=130} [2021-06-13 06:56:59,410 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 31 predicate places. [2021-06-13 06:56:59,410 INFO L482 AbstractCegarLoop]: Abstraction has has 132 places, 130 transitions, 515 flow [2021-06-13 06:56:59,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,410 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-06-13 06:56:59,410 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-13 06:56:59,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-13 06:56:59,410 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-13 06:56:59,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-13 06:56:59,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1429311508, now seen corresponding path program 1 times [2021-06-13 06:56:59,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-13 06:56:59,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072308285] [2021-06-13 06:56:59,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-13 06:56:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-13 06:56:59,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:59,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:59,428 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:59,429 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-13 06:56:59,431 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:59,431 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-06-13 06:56:59,433 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-13 06:56:59,433 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-13 06:56:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-13 06:56:59,434 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-13 06:56:59,434 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072308285] [2021-06-13 06:56:59,435 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072308285] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-13 06:56:59,435 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-13 06:56:59,435 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-13 06:56:59,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257650901] [2021-06-13 06:56:59,435 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-13 06:56:59,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-13 06:56:59,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-13 06:56:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-13 06:56:59,438 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 131 [2021-06-13 06:56:59,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 130 transitions, 515 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-13 06:56:59,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 131 [2021-06-13 06:56:59,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-13 06:56:59,594 INFO L129 PetriNetUnfolder]: 475/2357 cut-off events. [2021-06-13 06:56:59,594 INFO L130 PetriNetUnfolder]: For 859/879 co-relation queries the response was YES. [2021-06-13 06:56:59,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4686 conditions, 2357 events. 475/2357 cut-off events. For 859/879 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 19959 event pairs, 37 based on Foata normal form. 5/2233 useless extension candidates. Maximal degree in co-relation 4664. Up to 294 conditions per place. [2021-06-13 06:56:59,605 INFO L132 encePairwiseOnDemand]: 124/131 looper letters, 0 selfloop transitions, 0 changer transitions 143/143 dead transitions. [2021-06-13 06:56:59,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 143 transitions, 590 flow [2021-06-13 06:56:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-13 06:56:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-13 06:56:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 572 transitions. [2021-06-13 06:56:59,606 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8732824427480916 [2021-06-13 06:56:59,606 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 572 transitions. [2021-06-13 06:56:59,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 572 transitions. [2021-06-13 06:56:59,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-13 06:56:59,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 572 transitions. [2021-06-13 06:56:59,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,609 INFO L185 Difference]: Start difference. First operand has 132 places, 130 transitions, 515 flow. Second operand 5 states and 572 transitions. [2021-06-13 06:56:59,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 143 transitions, 590 flow [2021-06-13 06:56:59,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 576 flow, removed 7 selfloop flow, removed 0 redundant places. [2021-06-13 06:56:59,615 INFO L241 Difference]: Finished difference. Result has 134 places, 0 transitions, 0 flow [2021-06-13 06:56:59,615 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=134, PETRI_TRANSITIONS=0} [2021-06-13 06:56:59,615 INFO L335 CegarLoopForPetriNet]: 101 programPoint places, 33 predicate places. [2021-06-13 06:56:59,616 INFO L482 AbstractCegarLoop]: Abstraction has has 134 places, 0 transitions, 0 flow [2021-06-13 06:56:59,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-13 06:56:59,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-13 06:56:59,616 INFO L301 ceAbstractionStarter]: Result for error location thr2Thread1of1ForFork0 was SAFE (5/5) [2021-06-13 06:56:59,616 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-13 06:56:59,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.06 06:56:59 BasicIcfg [2021-06-13 06:56:59,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-13 06:56:59,619 INFO L168 Benchmark]: Toolchain (without parser) took 4862.93 ms. Allocated memory was 185.6 MB in the beginning and 315.6 MB in the end (delta: 130.0 MB). Free memory was 148.8 MB in the beginning and 152.3 MB in the end (delta: -3.5 MB). Peak memory consumption was 127.3 MB. Max. memory is 8.0 GB. [2021-06-13 06:56:59,619 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 185.6 MB. Free memory is still 166.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-13 06:56:59,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.97 ms. Allocated memory is still 185.6 MB. Free memory was 148.6 MB in the beginning and 149.0 MB in the end (delta: -372.9 kB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2021-06-13 06:56:59,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.77 ms. Allocated memory is still 185.6 MB. Free memory was 149.0 MB in the beginning and 147.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-13 06:56:59,620 INFO L168 Benchmark]: Boogie Preprocessor took 18.94 ms. Allocated memory is still 185.6 MB. Free memory was 147.3 MB in the beginning and 145.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-13 06:56:59,620 INFO L168 Benchmark]: RCFGBuilder took 454.37 ms. Allocated memory is still 185.6 MB. Free memory was 145.3 MB in the beginning and 117.5 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-06-13 06:56:59,620 INFO L168 Benchmark]: TraceAbstraction took 3976.07 ms. Allocated memory was 185.6 MB in the beginning and 315.6 MB in the end (delta: 130.0 MB). Free memory was 117.0 MB in the beginning and 152.3 MB in the end (delta: -35.3 MB). Peak memory consumption was 94.2 MB. Max. memory is 8.0 GB. [2021-06-13 06:56:59,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 185.6 MB. Free memory is still 166.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 376.97 ms. Allocated memory is still 185.6 MB. Free memory was 148.6 MB in the beginning and 149.0 MB in the end (delta: -372.9 kB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 31.77 ms. Allocated memory is still 185.6 MB. Free memory was 149.0 MB in the beginning and 147.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 18.94 ms. Allocated memory is still 185.6 MB. Free memory was 147.3 MB in the beginning and 145.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 454.37 ms. Allocated memory is still 185.6 MB. Free memory was 145.3 MB in the beginning and 117.5 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3976.07 ms. Allocated memory was 185.6 MB in the beginning and 315.6 MB in the end (delta: 130.0 MB). Free memory was 117.0 MB in the beginning and 152.3 MB in the end (delta: -35.3 MB). Peak memory consumption was 94.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 7.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 2453.2ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1772.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 55.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 138 SDtfs, 116 SDslu, 71 SDs, 0 SdLazy, 267 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 167.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=590occurred in iteration=7, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.6ms SsaConstructionTime, 91.5ms SatisfiabilityAnalysisTime, 349.0ms InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 360 ConstructedInterpolants, 0 QuantifiedInterpolants, 516 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 12.9ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr1 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 8.3ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 8.4ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: thr2Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 172 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 1393.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1177.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 139 SDtfs, 118 SDslu, 71 SDs, 0 SdLazy, 269 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=515occurred in iteration=7, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 7.4ms SsaConstructionTime, 21.7ms SatisfiabilityAnalysisTime, 128.0ms InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 372 ConstructedInterpolants, 0 QuantifiedInterpolants, 500 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...