/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf -i ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 19:00:56,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 19:00:56,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 19:00:56,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 19:00:56,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 19:00:56,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 19:00:56,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 19:00:56,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 19:00:56,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 19:00:56,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 19:00:56,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 19:00:56,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 19:00:56,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 19:00:56,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 19:00:56,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 19:00:56,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 19:00:56,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 19:00:56,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 19:00:56,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 19:00:56,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 19:00:56,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 19:00:56,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 19:00:56,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 19:00:56,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 19:00:56,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 19:00:56,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 19:00:56,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 19:00:56,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 19:00:56,979 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 19:00:56,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 19:00:56,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 19:00:56,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 19:00:56,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 19:00:56,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 19:00:56,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 19:00:56,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 19:00:56,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 19:00:56,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 19:00:56,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 19:00:56,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 19:00:56,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 19:00:56,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/VMCAI2021_PN.epf [2020-10-11 19:00:57,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 19:00:57,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 19:00:57,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 19:00:57,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 19:00:57,042 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 19:00:57,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 19:00:57,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 19:00:57,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 19:00:57,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 19:00:57,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 19:00:57,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 19:00:57,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 19:00:57,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 19:00:57,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 19:00:57,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 19:00:57,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 19:00:57,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 19:00:57,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 19:00:57,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 19:00:57,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 19:00:57,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 19:00:57,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:00:57,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 19:00:57,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 19:00:57,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 19:00:57,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 19:00:57,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 19:00:57,048 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-10-11 19:00:57,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-11 19:00:57,049 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 19:00:57,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 19:00:57,386 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 19:00:57,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 19:00:57,393 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 19:00:57,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 19:00:57,394 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2020-10-11 19:00:57,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f84d511/fa77f6e2e19a4c68ae8bae66bbd58dc5/FLAG6727ed9b7 [2020-10-11 19:00:58,045 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 19:00:58,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2020-10-11 19:00:58,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f84d511/fa77f6e2e19a4c68ae8bae66bbd58dc5/FLAG6727ed9b7 [2020-10-11 19:00:58,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f84d511/fa77f6e2e19a4c68ae8bae66bbd58dc5 [2020-10-11 19:00:58,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 19:00:58,320 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 19:00:58,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 19:00:58,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 19:00:58,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 19:00:58,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:00:58" (1/1) ... [2020-10-11 19:00:58,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ae30ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:58, skipping insertion in model container [2020-10-11 19:00:58,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:00:58" (1/1) ... [2020-10-11 19:00:58,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 19:00:58,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 19:00:59,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:00:59,241 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 19:00:59,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 19:00:59,760 INFO L208 MainTranslator]: Completed translation [2020-10-11 19:00:59,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59 WrapperNode [2020-10-11 19:00:59,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 19:00:59,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 19:00:59,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 19:00:59,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 19:00:59,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... [2020-10-11 19:00:59,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... [2020-10-11 19:00:59,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 19:00:59,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 19:00:59,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 19:00:59,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 19:00:59,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... [2020-10-11 19:00:59,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... [2020-10-11 19:00:59,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... [2020-10-11 19:00:59,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... [2020-10-11 19:00:59,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... [2020-10-11 19:00:59,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... [2020-10-11 19:00:59,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... [2020-10-11 19:00:59,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 19:00:59,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 19:00:59,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 19:00:59,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 19:00:59,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 19:00:59,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 19:00:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 19:00:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-11 19:00:59,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-11 19:00:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 19:00:59,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 19:00:59,974 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2020-10-11 19:00:59,975 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2020-10-11 19:00:59,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 19:00:59,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 19:00:59,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 19:00:59,979 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 19:01:00,585 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 19:01:00,586 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-10-11 19:01:00,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:01:00 BoogieIcfgContainer [2020-10-11 19:01:00,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 19:01:00,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 19:01:00,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 19:01:00,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 19:01:00,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:00:58" (1/3) ... [2020-10-11 19:01:00,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dc141d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:01:00, skipping insertion in model container [2020-10-11 19:01:00,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:00:59" (2/3) ... [2020-10-11 19:01:00,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57dc141d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:01:00, skipping insertion in model container [2020-10-11 19:01:00,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:01:00" (3/3) ... [2020-10-11 19:01:00,600 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2020-10-11 19:01:00,612 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 19:01:00,620 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-11 19:01:00,621 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 19:01:00,654 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,655 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,655 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,655 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,655 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,656 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,656 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,656 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,656 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,656 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,657 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,657 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,657 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,657 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,657 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,657 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,658 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,658 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,658 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,658 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,658 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,659 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,659 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,659 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,659 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,660 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,660 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,660 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,660 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,660 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,661 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,661 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,661 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,661 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,662 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,662 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,662 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,662 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,663 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,663 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,663 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,663 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,663 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,664 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,664 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,664 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,664 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,664 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,665 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,665 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,665 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,665 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,665 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,666 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,666 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,666 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,666 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,666 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,667 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,667 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,667 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,667 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,668 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,668 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,668 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,668 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,669 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,669 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,669 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,669 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,673 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,673 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,673 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,673 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,674 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,674 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,674 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,674 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,675 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,675 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,675 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,675 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,685 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,685 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,685 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,686 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,686 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,686 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,686 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~nondet30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,687 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,687 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,687 WARN L313 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,687 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,687 WARN L313 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~dev~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 19:01:00,714 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-11 19:01:00,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 19:01:00,737 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-11 19:01:00,737 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 19:01:00,738 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 19:01:00,738 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 19:01:00,738 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 19:01:00,738 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 19:01:00,738 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 19:01:00,756 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 151 places, 155 transitions, 332 flow [2020-10-11 19:01:00,829 INFO L129 PetriNetUnfolder]: 11/193 cut-off events. [2020-10-11 19:01:00,830 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 19:01:00,837 INFO L80 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 193 events. 11/193 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 378 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 107. Up to 4 conditions per place. [2020-10-11 19:01:00,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 155 transitions, 332 flow [2020-10-11 19:01:00,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 144 transitions, 306 flow [2020-10-11 19:01:00,875 INFO L129 PetriNetUnfolder]: 1/33 cut-off events. [2020-10-11 19:01:00,875 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-11 19:01:00,876 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:01:00,877 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] [2020-10-11 19:01:00,877 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:01:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:01:00,884 INFO L82 PathProgramCache]: Analyzing trace with hash -102261256, now seen corresponding path program 1 times [2020-10-11 19:01:00,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:01:00,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570084881] [2020-10-11 19:01:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:01:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:01:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:01:01,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570084881] [2020-10-11 19:01:01,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:01:01,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 19:01:01,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796927605] [2020-10-11 19:01:01,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 19:01:01,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:01:01,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 19:01:01,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 19:01:02,716 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 155 [2020-10-11 19:01:02,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 144 transitions, 306 flow. Second operand 6 states. [2020-10-11 19:01:02,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:01:02,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 155 [2020-10-11 19:01:02,721 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:01:03,011 INFO L129 PetriNetUnfolder]: 144/547 cut-off events. [2020-10-11 19:01:03,011 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2020-10-11 19:01:03,015 INFO L80 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 547 events. 144/547 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3012 event pairs, 68 based on Foata normal form. 13/541 useless extension candidates. Maximal degree in co-relation 687. Up to 143 conditions per place. [2020-10-11 19:01:03,020 INFO L132 encePairwiseOnDemand]: 132/155 looper letters, 31 selfloop transitions, 18 changer transitions 0/144 dead transitions. [2020-10-11 19:01:03,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 144 transitions, 404 flow [2020-10-11 19:01:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-11 19:01:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-10-11 19:01:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 999 transitions. [2020-10-11 19:01:03,043 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7161290322580646 [2020-10-11 19:01:03,044 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 999 transitions. [2020-10-11 19:01:03,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 999 transitions. [2020-10-11 19:01:03,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:01:03,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 999 transitions. [2020-10-11 19:01:03,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 10 states. [2020-10-11 19:01:03,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 10 states. [2020-10-11 19:01:03,071 INFO L81 ComplementDD]: Finished complementDD. Result 10 states. [2020-10-11 19:01:03,075 INFO L185 Difference]: Start difference. First operand has 142 places, 144 transitions, 306 flow. Second operand 9 states and 999 transitions. [2020-10-11 19:01:03,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 144 transitions, 404 flow [2020-10-11 19:01:03,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 144 transitions, 392 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 19:01:03,088 INFO L241 Difference]: Finished difference. Result has 145 places, 140 transitions, 334 flow [2020-10-11 19:01:03,091 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=334, PETRI_PLACES=145, PETRI_TRANSITIONS=140} [2020-10-11 19:01:03,093 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 3 predicate places. [2020-10-11 19:01:03,093 INFO L481 AbstractCegarLoop]: Abstraction has has 145 places, 140 transitions, 334 flow [2020-10-11 19:01:03,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 19:01:03,093 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:01:03,093 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] [2020-10-11 19:01:03,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 19:01:03,094 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:01:03,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:01:03,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1137045724, now seen corresponding path program 1 times [2020-10-11 19:01:03,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:01:03,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047902384] [2020-10-11 19:01:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:01:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:01:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:01:03,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047902384] [2020-10-11 19:01:03,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:01:03,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 19:01:03,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771823368] [2020-10-11 19:01:03,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 19:01:03,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:01:03,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 19:01:03,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 19:01:03,979 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 155 [2020-10-11 19:01:03,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 140 transitions, 334 flow. Second operand 6 states. [2020-10-11 19:01:03,980 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:01:03,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 155 [2020-10-11 19:01:03,980 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:01:04,197 INFO L129 PetriNetUnfolder]: 144/510 cut-off events. [2020-10-11 19:01:04,198 INFO L130 PetriNetUnfolder]: For 49/51 co-relation queries the response was YES. [2020-10-11 19:01:04,200 INFO L80 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 510 events. 144/510 cut-off events. For 49/51 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2695 event pairs, 32 based on Foata normal form. 3/507 useless extension candidates. Maximal degree in co-relation 314. Up to 141 conditions per place. [2020-10-11 19:01:04,203 INFO L132 encePairwiseOnDemand]: 135/155 looper letters, 36 selfloop transitions, 19 changer transitions 0/149 dead transitions. [2020-10-11 19:01:04,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 149 transitions, 468 flow [2020-10-11 19:01:04,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-11 19:01:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-11 19:01:04,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1106 transitions. [2020-10-11 19:01:04,208 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7135483870967742 [2020-10-11 19:01:04,208 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1106 transitions. [2020-10-11 19:01:04,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1106 transitions. [2020-10-11 19:01:04,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:01:04,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1106 transitions. [2020-10-11 19:01:04,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 11 states. [2020-10-11 19:01:04,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 11 states. [2020-10-11 19:01:04,216 INFO L81 ComplementDD]: Finished complementDD. Result 11 states. [2020-10-11 19:01:04,216 INFO L185 Difference]: Start difference. First operand has 145 places, 140 transitions, 334 flow. Second operand 10 states and 1106 transitions. [2020-10-11 19:01:04,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 149 transitions, 468 flow [2020-10-11 19:01:04,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 149 transitions, 438 flow, removed 0 selfloop flow, removed 7 redundant places. [2020-10-11 19:01:04,223 INFO L241 Difference]: Finished difference. Result has 146 places, 139 transitions, 347 flow [2020-10-11 19:01:04,224 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=347, PETRI_PLACES=146, PETRI_TRANSITIONS=139} [2020-10-11 19:01:04,225 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 4 predicate places. [2020-10-11 19:01:04,225 INFO L481 AbstractCegarLoop]: Abstraction has has 146 places, 139 transitions, 347 flow [2020-10-11 19:01:04,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 19:01:04,225 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:01:04,225 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, 1] [2020-10-11 19:01:04,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 19:01:04,226 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:01:04,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:01:04,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1024709811, now seen corresponding path program 1 times [2020-10-11 19:01:04,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:01:04,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279772223] [2020-10-11 19:01:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:01:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:01:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:01:04,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279772223] [2020-10-11 19:01:04,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:01:04,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 19:01:04,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552578184] [2020-10-11 19:01:04,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 19:01:04,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:01:04,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 19:01:04,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 19:01:05,514 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 155 [2020-10-11 19:01:05,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 139 transitions, 347 flow. Second operand 6 states. [2020-10-11 19:01:05,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:01:05,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 155 [2020-10-11 19:01:05,516 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:01:06,029 INFO L129 PetriNetUnfolder]: 316/1008 cut-off events. [2020-10-11 19:01:06,030 INFO L130 PetriNetUnfolder]: For 130/132 co-relation queries the response was YES. [2020-10-11 19:01:06,033 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1857 conditions, 1008 events. 316/1008 cut-off events. For 130/132 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6478 event pairs, 32 based on Foata normal form. 18/1020 useless extension candidates. Maximal degree in co-relation 363. Up to 168 conditions per place. [2020-10-11 19:01:06,042 INFO L132 encePairwiseOnDemand]: 134/155 looper letters, 57 selfloop transitions, 49 changer transitions 0/199 dead transitions. [2020-10-11 19:01:06,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 199 transitions, 717 flow [2020-10-11 19:01:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-11 19:01:06,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-11 19:01:06,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1443 transitions. [2020-10-11 19:01:06,053 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7161290322580646 [2020-10-11 19:01:06,053 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1443 transitions. [2020-10-11 19:01:06,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1443 transitions. [2020-10-11 19:01:06,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:01:06,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1443 transitions. [2020-10-11 19:01:06,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 14 states. [2020-10-11 19:01:06,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 14 states. [2020-10-11 19:01:06,063 INFO L81 ComplementDD]: Finished complementDD. Result 14 states. [2020-10-11 19:01:06,063 INFO L185 Difference]: Start difference. First operand has 146 places, 139 transitions, 347 flow. Second operand 13 states and 1443 transitions. [2020-10-11 19:01:06,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 199 transitions, 717 flow [2020-10-11 19:01:06,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 199 transitions, 670 flow, removed 0 selfloop flow, removed 8 redundant places. [2020-10-11 19:01:06,076 INFO L241 Difference]: Finished difference. Result has 158 places, 176 transitions, 628 flow [2020-10-11 19:01:06,077 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=628, PETRI_PLACES=158, PETRI_TRANSITIONS=176} [2020-10-11 19:01:06,077 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 16 predicate places. [2020-10-11 19:01:06,077 INFO L481 AbstractCegarLoop]: Abstraction has has 158 places, 176 transitions, 628 flow [2020-10-11 19:01:06,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 19:01:06,077 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:01:06,078 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:01:06,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-11 19:01:06,078 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:01:06,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:01:06,079 INFO L82 PathProgramCache]: Analyzing trace with hash 388356272, now seen corresponding path program 1 times [2020-10-11 19:01:06,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:01:06,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914813314] [2020-10-11 19:01:06,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:01:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:01:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:01:06,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914813314] [2020-10-11 19:01:06,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:01:06,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-11 19:01:06,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913986525] [2020-10-11 19:01:06,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-11 19:01:06,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:01:06,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-11 19:01:06,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-11 19:01:07,250 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 155 [2020-10-11 19:01:07,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 176 transitions, 628 flow. Second operand 6 states. [2020-10-11 19:01:07,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:01:07,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 155 [2020-10-11 19:01:07,252 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:01:07,797 INFO L129 PetriNetUnfolder]: 486/1385 cut-off events. [2020-10-11 19:01:07,797 INFO L130 PetriNetUnfolder]: For 7811/7825 co-relation queries the response was YES. [2020-10-11 19:01:07,805 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 1385 events. 486/1385 cut-off events. For 7811/7825 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9676 event pairs, 56 based on Foata normal form. 26/1405 useless extension candidates. Maximal degree in co-relation 4556. Up to 447 conditions per place. [2020-10-11 19:01:07,817 INFO L132 encePairwiseOnDemand]: 136/155 looper letters, 48 selfloop transitions, 48 changer transitions 56/246 dead transitions. [2020-10-11 19:01:07,817 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 246 transitions, 1622 flow [2020-10-11 19:01:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-11 19:01:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-11 19:01:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1224 transitions. [2020-10-11 19:01:07,822 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7178885630498534 [2020-10-11 19:01:07,822 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1224 transitions. [2020-10-11 19:01:07,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1224 transitions. [2020-10-11 19:01:07,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:01:07,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1224 transitions. [2020-10-11 19:01:07,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 12 states. [2020-10-11 19:01:07,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 12 states. [2020-10-11 19:01:07,829 INFO L81 ComplementDD]: Finished complementDD. Result 12 states. [2020-10-11 19:01:07,829 INFO L185 Difference]: Start difference. First operand has 158 places, 176 transitions, 628 flow. Second operand 11 states and 1224 transitions. [2020-10-11 19:01:07,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 246 transitions, 1622 flow [2020-10-11 19:01:07,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 246 transitions, 1600 flow, removed 11 selfloop flow, removed 0 redundant places. [2020-10-11 19:01:07,850 INFO L241 Difference]: Finished difference. Result has 176 places, 183 transitions, 935 flow [2020-10-11 19:01:07,850 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=935, PETRI_PLACES=176, PETRI_TRANSITIONS=183} [2020-10-11 19:01:07,850 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 34 predicate places. [2020-10-11 19:01:07,851 INFO L481 AbstractCegarLoop]: Abstraction has has 176 places, 183 transitions, 935 flow [2020-10-11 19:01:07,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-11 19:01:07,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:01:07,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:01:07,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 19:01:07,851 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:01:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:01:07,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1537547210, now seen corresponding path program 1 times [2020-10-11 19:01:07,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:01:07,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261470338] [2020-10-11 19:01:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:01:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:01:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:01:07,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261470338] [2020-10-11 19:01:07,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:01:07,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 19:01:07,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214088653] [2020-10-11 19:01:07,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 19:01:07,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:01:07,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 19:01:07,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 19:01:08,019 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 155 [2020-10-11 19:01:08,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 183 transitions, 935 flow. Second operand 5 states. [2020-10-11 19:01:08,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:01:08,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 155 [2020-10-11 19:01:08,020 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:01:08,076 INFO L129 PetriNetUnfolder]: 6/154 cut-off events. [2020-10-11 19:01:08,077 INFO L130 PetriNetUnfolder]: For 469/489 co-relation queries the response was YES. [2020-10-11 19:01:08,078 INFO L80 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 154 events. 6/154 cut-off events. For 469/489 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 275 event pairs, 4 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 333. Up to 14 conditions per place. [2020-10-11 19:01:08,079 INFO L132 encePairwiseOnDemand]: 150/155 looper letters, 4 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2020-10-11 19:01:08,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 116 transitions, 390 flow [2020-10-11 19:01:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 19:01:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-11 19:01:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 843 transitions. [2020-10-11 19:01:08,082 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.9064516129032258 [2020-10-11 19:01:08,082 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 843 transitions. [2020-10-11 19:01:08,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 843 transitions. [2020-10-11 19:01:08,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:01:08,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 843 transitions. [2020-10-11 19:01:08,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 7 states. [2020-10-11 19:01:08,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 7 states. [2020-10-11 19:01:08,087 INFO L81 ComplementDD]: Finished complementDD. Result 7 states. [2020-10-11 19:01:08,087 INFO L185 Difference]: Start difference. First operand has 176 places, 183 transitions, 935 flow. Second operand 6 states and 843 transitions. [2020-10-11 19:01:08,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 116 transitions, 390 flow [2020-10-11 19:01:08,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 116 transitions, 274 flow, removed 40 selfloop flow, removed 17 redundant places. [2020-10-11 19:01:08,091 INFO L241 Difference]: Finished difference. Result has 127 places, 116 transitions, 266 flow [2020-10-11 19:01:08,091 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=266, PETRI_PLACES=127, PETRI_TRANSITIONS=116} [2020-10-11 19:01:08,091 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, -15 predicate places. [2020-10-11 19:01:08,091 INFO L481 AbstractCegarLoop]: Abstraction has has 127 places, 116 transitions, 266 flow [2020-10-11 19:01:08,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 19:01:08,092 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:01:08,092 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:01:08,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 19:01:08,092 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:01:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:01:08,093 INFO L82 PathProgramCache]: Analyzing trace with hash -2013250766, now seen corresponding path program 1 times [2020-10-11 19:01:08,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:01:08,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738735802] [2020-10-11 19:01:08,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:01:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:01:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:01:08,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738735802] [2020-10-11 19:01:08,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:01:08,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:01:08,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619656959] [2020-10-11 19:01:08,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:01:08,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:01:08,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:01:08,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:01:26,055 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 155 [2020-10-11 19:01:26,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 116 transitions, 266 flow. Second operand 18 states. [2020-10-11 19:01:26,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:01:26,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 155 [2020-10-11 19:01:26,057 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:01:27,226 INFO L129 PetriNetUnfolder]: 78/407 cut-off events. [2020-10-11 19:01:27,226 INFO L130 PetriNetUnfolder]: For 80/98 co-relation queries the response was YES. [2020-10-11 19:01:27,227 INFO L80 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 407 events. 78/407 cut-off events. For 80/98 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1920 event pairs, 8 based on Foata normal form. 4/404 useless extension candidates. Maximal degree in co-relation 692. Up to 67 conditions per place. [2020-10-11 19:01:27,229 INFO L132 encePairwiseOnDemand]: 127/155 looper letters, 52 selfloop transitions, 31 changer transitions 0/154 dead transitions. [2020-10-11 19:01:27,230 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 154 transitions, 524 flow [2020-10-11 19:01:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 19:01:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-11 19:01:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1863 transitions. [2020-10-11 19:01:27,239 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6009677419354839 [2020-10-11 19:01:27,239 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1863 transitions. [2020-10-11 19:01:27,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1863 transitions. [2020-10-11 19:01:27,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:01:27,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1863 transitions. [2020-10-11 19:01:27,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 21 states. [2020-10-11 19:01:27,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 21 states. [2020-10-11 19:01:27,251 INFO L81 ComplementDD]: Finished complementDD. Result 21 states. [2020-10-11 19:01:27,251 INFO L185 Difference]: Start difference. First operand has 127 places, 116 transitions, 266 flow. Second operand 20 states and 1863 transitions. [2020-10-11 19:01:27,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 154 transitions, 524 flow [2020-10-11 19:01:27,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 154 transitions, 517 flow, removed 0 selfloop flow, removed 4 redundant places. [2020-10-11 19:01:27,256 INFO L241 Difference]: Finished difference. Result has 150 places, 131 transitions, 418 flow [2020-10-11 19:01:27,257 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=418, PETRI_PLACES=150, PETRI_TRANSITIONS=131} [2020-10-11 19:01:27,257 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 8 predicate places. [2020-10-11 19:01:27,257 INFO L481 AbstractCegarLoop]: Abstraction has has 150 places, 131 transitions, 418 flow [2020-10-11 19:01:27,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:01:27,257 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:01:27,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:01:27,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 19:01:27,258 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:01:27,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:01:27,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1344910492, now seen corresponding path program 1 times [2020-10-11 19:01:27,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:01:27,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502051287] [2020-10-11 19:01:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:01:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:01:27,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:01:27,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502051287] [2020-10-11 19:01:27,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:01:27,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-10-11 19:01:27,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230250960] [2020-10-11 19:01:27,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-11 19:01:27,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:01:27,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-11 19:01:27,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-10-11 19:01:48,651 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 155 [2020-10-11 19:01:48,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 131 transitions, 418 flow. Second operand 23 states. [2020-10-11 19:01:48,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:01:48,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 155 [2020-10-11 19:01:48,654 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:01:52,584 INFO L129 PetriNetUnfolder]: 438/1578 cut-off events. [2020-10-11 19:01:52,585 INFO L130 PetriNetUnfolder]: For 1017/1030 co-relation queries the response was YES. [2020-10-11 19:01:52,590 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3271 conditions, 1578 events. 438/1578 cut-off events. For 1017/1030 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11164 event pairs, 2 based on Foata normal form. 10/1565 useless extension candidates. Maximal degree in co-relation 3255. Up to 182 conditions per place. [2020-10-11 19:01:52,598 INFO L132 encePairwiseOnDemand]: 132/155 looper letters, 160 selfloop transitions, 98 changer transitions 19/362 dead transitions. [2020-10-11 19:01:52,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 362 transitions, 1931 flow [2020-10-11 19:01:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-11 19:01:52,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-11 19:01:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 5985 transitions. [2020-10-11 19:01:52,615 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.7285453438831406 [2020-10-11 19:01:52,615 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 5985 transitions. [2020-10-11 19:01:52,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 5985 transitions. [2020-10-11 19:01:52,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:01:52,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 5985 transitions. [2020-10-11 19:01:52,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 54 states. [2020-10-11 19:01:52,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 54 states. [2020-10-11 19:01:52,646 INFO L81 ComplementDD]: Finished complementDD. Result 54 states. [2020-10-11 19:01:52,647 INFO L185 Difference]: Start difference. First operand has 150 places, 131 transitions, 418 flow. Second operand 53 states and 5985 transitions. [2020-10-11 19:01:52,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 362 transitions, 1931 flow [2020-10-11 19:01:52,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 362 transitions, 1795 flow, removed 0 selfloop flow, removed 9 redundant places. [2020-10-11 19:01:52,661 INFO L241 Difference]: Finished difference. Result has 221 places, 225 transitions, 1063 flow [2020-10-11 19:01:52,662 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=1063, PETRI_PLACES=221, PETRI_TRANSITIONS=225} [2020-10-11 19:01:52,662 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 79 predicate places. [2020-10-11 19:01:52,662 INFO L481 AbstractCegarLoop]: Abstraction has has 221 places, 225 transitions, 1063 flow [2020-10-11 19:01:52,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-11 19:01:52,662 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:01:52,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:01:52,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 19:01:52,663 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:01:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:01:52,663 INFO L82 PathProgramCache]: Analyzing trace with hash -600626416, now seen corresponding path program 2 times [2020-10-11 19:01:52,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:01:52,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462130331] [2020-10-11 19:01:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:01:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:01:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:01:53,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462130331] [2020-10-11 19:01:53,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:01:53,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-11 19:01:53,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780394443] [2020-10-11 19:01:53,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:01:53,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:01:53,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:01:53,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:02:27,129 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2020-10-11 19:02:27,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 225 transitions, 1063 flow. Second operand 24 states. [2020-10-11 19:02:27,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:27,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2020-10-11 19:02:27,131 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:28,122 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-11 19:02:28,333 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-11 19:02:28,549 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-11 19:02:28,836 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-11 19:02:29,089 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 19:02:29,433 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-11 19:02:29,901 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2020-10-11 19:02:30,486 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-11 19:02:30,787 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-11 19:02:30,994 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-11 19:02:31,253 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-10-11 19:02:31,529 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-11 19:02:31,540 INFO L129 PetriNetUnfolder]: 492/1955 cut-off events. [2020-10-11 19:02:31,540 INFO L130 PetriNetUnfolder]: For 4018/4074 co-relation queries the response was YES. [2020-10-11 19:02:31,552 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5319 conditions, 1955 events. 492/1955 cut-off events. For 4018/4074 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 15761 event pairs, 43 based on Foata normal form. 26/1935 useless extension candidates. Maximal degree in co-relation 5274. Up to 286 conditions per place. [2020-10-11 19:02:31,563 INFO L132 encePairwiseOnDemand]: 123/155 looper letters, 241 selfloop transitions, 86 changer transitions 1/406 dead transitions. [2020-10-11 19:02:31,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 406 transitions, 2743 flow [2020-10-11 19:02:31,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 19:02:31,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-11 19:02:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2221 transitions. [2020-10-11 19:02:31,568 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5731612903225807 [2020-10-11 19:02:31,568 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2221 transitions. [2020-10-11 19:02:31,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2221 transitions. [2020-10-11 19:02:31,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:31,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2221 transitions. [2020-10-11 19:02:31,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 26 states. [2020-10-11 19:02:31,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 26 states. [2020-10-11 19:02:31,577 INFO L81 ComplementDD]: Finished complementDD. Result 26 states. [2020-10-11 19:02:31,577 INFO L185 Difference]: Start difference. First operand has 221 places, 225 transitions, 1063 flow. Second operand 25 states and 2221 transitions. [2020-10-11 19:02:31,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 406 transitions, 2743 flow [2020-10-11 19:02:31,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 406 transitions, 2725 flow, removed 4 selfloop flow, removed 9 redundant places. [2020-10-11 19:02:31,615 INFO L241 Difference]: Finished difference. Result has 245 places, 270 transitions, 1645 flow [2020-10-11 19:02:31,616 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1645, PETRI_PLACES=245, PETRI_TRANSITIONS=270} [2020-10-11 19:02:31,616 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 103 predicate places. [2020-10-11 19:02:31,617 INFO L481 AbstractCegarLoop]: Abstraction has has 245 places, 270 transitions, 1645 flow [2020-10-11 19:02:31,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:02:31,617 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:31,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:31,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-11 19:02:31,618 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:31,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:31,618 INFO L82 PathProgramCache]: Analyzing trace with hash 450529624, now seen corresponding path program 3 times [2020-10-11 19:02:31,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:31,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983734914] [2020-10-11 19:02:31,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:32,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983734914] [2020-10-11 19:02:32,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:32,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:02:32,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206215251] [2020-10-11 19:02:32,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:02:32,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:32,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:02:32,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:02:51,197 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 155 [2020-10-11 19:02:51,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 270 transitions, 1645 flow. Second operand 18 states. [2020-10-11 19:02:51,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:02:51,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 155 [2020-10-11 19:02:51,199 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:02:52,786 INFO L129 PetriNetUnfolder]: 295/1782 cut-off events. [2020-10-11 19:02:52,786 INFO L130 PetriNetUnfolder]: For 3866/3939 co-relation queries the response was YES. [2020-10-11 19:02:52,797 INFO L80 FinitePrefix]: Finished finitePrefix Result has 4927 conditions, 1782 events. 295/1782 cut-off events. For 3866/3939 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 15470 event pairs, 24 based on Foata normal form. 32/1795 useless extension candidates. Maximal degree in co-relation 4873. Up to 261 conditions per place. [2020-10-11 19:02:52,804 INFO L132 encePairwiseOnDemand]: 127/155 looper letters, 124 selfloop transitions, 104 changer transitions 1/359 dead transitions. [2020-10-11 19:02:52,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 359 transitions, 2721 flow [2020-10-11 19:02:52,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 19:02:52,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-11 19:02:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2059 transitions. [2020-10-11 19:02:52,808 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6038123167155425 [2020-10-11 19:02:52,808 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2059 transitions. [2020-10-11 19:02:52,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2059 transitions. [2020-10-11 19:02:52,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:02:52,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2059 transitions. [2020-10-11 19:02:52,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-11 19:02:52,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-11 19:02:52,815 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-11 19:02:52,815 INFO L185 Difference]: Start difference. First operand has 245 places, 270 transitions, 1645 flow. Second operand 22 states and 2059 transitions. [2020-10-11 19:02:52,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 359 transitions, 2721 flow [2020-10-11 19:02:52,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 359 transitions, 2664 flow, removed 0 selfloop flow, removed 9 redundant places. [2020-10-11 19:02:52,848 INFO L241 Difference]: Finished difference. Result has 265 places, 303 transitions, 2220 flow [2020-10-11 19:02:52,849 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2220, PETRI_PLACES=265, PETRI_TRANSITIONS=303} [2020-10-11 19:02:52,849 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 123 predicate places. [2020-10-11 19:02:52,849 INFO L481 AbstractCegarLoop]: Abstraction has has 265 places, 303 transitions, 2220 flow [2020-10-11 19:02:52,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:02:52,849 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:02:52,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:02:52,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-11 19:02:52,850 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:02:52,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:02:52,851 INFO L82 PathProgramCache]: Analyzing trace with hash 770795490, now seen corresponding path program 4 times [2020-10-11 19:02:52,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:02:52,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005687354] [2020-10-11 19:02:52,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:02:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:02:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:02:53,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005687354] [2020-10-11 19:02:53,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:02:53,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:02:53,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054710015] [2020-10-11 19:02:53,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:02:53,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:02:53,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:02:53,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:03:12,831 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 155 [2020-10-11 19:03:12,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 303 transitions, 2220 flow. Second operand 18 states. [2020-10-11 19:03:12,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:03:12,833 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 155 [2020-10-11 19:03:12,834 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:03:13,651 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-10-11 19:03:14,498 INFO L129 PetriNetUnfolder]: 349/2188 cut-off events. [2020-10-11 19:03:14,499 INFO L130 PetriNetUnfolder]: For 6205/6361 co-relation queries the response was YES. [2020-10-11 19:03:14,510 INFO L80 FinitePrefix]: Finished finitePrefix Result has 6448 conditions, 2188 events. 349/2188 cut-off events. For 6205/6361 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 20324 event pairs, 42 based on Foata normal form. 75/2218 useless extension candidates. Maximal degree in co-relation 6385. Up to 296 conditions per place. [2020-10-11 19:03:14,519 INFO L132 encePairwiseOnDemand]: 127/155 looper letters, 145 selfloop transitions, 127 changer transitions 0/377 dead transitions. [2020-10-11 19:03:14,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 377 transitions, 3467 flow [2020-10-11 19:03:14,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 19:03:14,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-11 19:03:14,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1864 transitions. [2020-10-11 19:03:14,522 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6012903225806452 [2020-10-11 19:03:14,522 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1864 transitions. [2020-10-11 19:03:14,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1864 transitions. [2020-10-11 19:03:14,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:03:14,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1864 transitions. [2020-10-11 19:03:14,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 21 states. [2020-10-11 19:03:14,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 21 states. [2020-10-11 19:03:14,529 INFO L81 ComplementDD]: Finished complementDD. Result 21 states. [2020-10-11 19:03:14,529 INFO L185 Difference]: Start difference. First operand has 265 places, 303 transitions, 2220 flow. Second operand 20 states and 1864 transitions. [2020-10-11 19:03:14,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 377 transitions, 3467 flow [2020-10-11 19:03:14,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 377 transitions, 3372 flow, removed 19 selfloop flow, removed 9 redundant places. [2020-10-11 19:03:14,580 INFO L241 Difference]: Finished difference. Result has 283 places, 341 transitions, 2953 flow [2020-10-11 19:03:14,580 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2953, PETRI_PLACES=283, PETRI_TRANSITIONS=341} [2020-10-11 19:03:14,581 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 141 predicate places. [2020-10-11 19:03:14,581 INFO L481 AbstractCegarLoop]: Abstraction has has 283 places, 341 transitions, 2953 flow [2020-10-11 19:03:14,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:03:14,581 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:03:14,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:03:14,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-11 19:03:14,582 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:03:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:03:14,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2138912648, now seen corresponding path program 5 times [2020-10-11 19:03:14,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:03:14,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963350827] [2020-10-11 19:03:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:03:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:03:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:03:15,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963350827] [2020-10-11 19:03:15,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:03:15,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:03:15,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264077498] [2020-10-11 19:03:15,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:03:15,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:03:15,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:03:15,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:03:32,915 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 155 [2020-10-11 19:03:32,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 341 transitions, 2953 flow. Second operand 18 states. [2020-10-11 19:03:32,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:03:32,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 155 [2020-10-11 19:03:32,917 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:03:34,814 INFO L129 PetriNetUnfolder]: 408/3004 cut-off events. [2020-10-11 19:03:34,814 INFO L130 PetriNetUnfolder]: For 12245/12608 co-relation queries the response was YES. [2020-10-11 19:03:34,835 INFO L80 FinitePrefix]: Finished finitePrefix Result has 9676 conditions, 3004 events. 408/3004 cut-off events. For 12245/12608 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 30905 event pairs, 50 based on Foata normal form. 195/3158 useless extension candidates. Maximal degree in co-relation 9605. Up to 416 conditions per place. [2020-10-11 19:03:34,847 INFO L132 encePairwiseOnDemand]: 127/155 looper letters, 184 selfloop transitions, 166 changer transitions 1/456 dead transitions. [2020-10-11 19:03:34,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 456 transitions, 4899 flow [2020-10-11 19:03:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 19:03:34,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-11 19:03:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2060 transitions. [2020-10-11 19:03:34,851 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6041055718475073 [2020-10-11 19:03:34,851 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2060 transitions. [2020-10-11 19:03:34,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2060 transitions. [2020-10-11 19:03:34,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:03:34,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2060 transitions. [2020-10-11 19:03:34,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-11 19:03:34,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-11 19:03:34,858 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-11 19:03:34,858 INFO L185 Difference]: Start difference. First operand has 283 places, 341 transitions, 2953 flow. Second operand 22 states and 2060 transitions. [2020-10-11 19:03:34,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 456 transitions, 4899 flow [2020-10-11 19:03:34,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 456 transitions, 4780 flow, removed 8 selfloop flow, removed 9 redundant places. [2020-10-11 19:03:34,939 INFO L241 Difference]: Finished difference. Result has 303 places, 387 transitions, 3966 flow [2020-10-11 19:03:34,939 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3966, PETRI_PLACES=303, PETRI_TRANSITIONS=387} [2020-10-11 19:03:34,940 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 161 predicate places. [2020-10-11 19:03:34,940 INFO L481 AbstractCegarLoop]: Abstraction has has 303 places, 387 transitions, 3966 flow [2020-10-11 19:03:34,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:03:34,940 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:03:34,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:03:34,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-11 19:03:34,941 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:03:34,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:03:34,941 INFO L82 PathProgramCache]: Analyzing trace with hash -776914412, now seen corresponding path program 6 times [2020-10-11 19:03:34,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:03:34,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823005523] [2020-10-11 19:03:34,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:03:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:03:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:03:35,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823005523] [2020-10-11 19:03:35,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:03:35,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:03:35,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192057196] [2020-10-11 19:03:35,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:03:35,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:03:35,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:03:35,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:03:50,867 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 155 [2020-10-11 19:03:50,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 387 transitions, 3966 flow. Second operand 18 states. [2020-10-11 19:03:50,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:03:50,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 155 [2020-10-11 19:03:50,869 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:03:51,701 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-11 19:03:52,916 INFO L129 PetriNetUnfolder]: 487/3572 cut-off events. [2020-10-11 19:03:52,917 INFO L130 PetriNetUnfolder]: For 20055/20438 co-relation queries the response was YES. [2020-10-11 19:03:52,936 INFO L80 FinitePrefix]: Finished finitePrefix Result has 12639 conditions, 3572 events. 487/3572 cut-off events. For 20055/20438 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 38749 event pairs, 66 based on Foata normal form. 104/3605 useless extension candidates. Maximal degree in co-relation 12559. Up to 567 conditions per place. [2020-10-11 19:03:52,948 INFO L132 encePairwiseOnDemand]: 129/155 looper letters, 230 selfloop transitions, 133 changer transitions 3/498 dead transitions. [2020-10-11 19:03:52,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 498 transitions, 6052 flow [2020-10-11 19:03:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 19:03:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-11 19:03:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2059 transitions. [2020-10-11 19:03:52,954 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6038123167155425 [2020-10-11 19:03:52,954 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2059 transitions. [2020-10-11 19:03:52,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2059 transitions. [2020-10-11 19:03:52,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:03:52,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2059 transitions. [2020-10-11 19:03:52,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-11 19:03:52,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-11 19:03:52,960 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-11 19:03:52,961 INFO L185 Difference]: Start difference. First operand has 303 places, 387 transitions, 3966 flow. Second operand 22 states and 2059 transitions. [2020-10-11 19:03:52,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 498 transitions, 6052 flow [2020-10-11 19:03:53,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 498 transitions, 5927 flow, removed 11 selfloop flow, removed 9 redundant places. [2020-10-11 19:03:53,072 INFO L241 Difference]: Finished difference. Result has 326 places, 424 transitions, 4827 flow [2020-10-11 19:03:53,073 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=3849, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4827, PETRI_PLACES=326, PETRI_TRANSITIONS=424} [2020-10-11 19:03:53,073 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 184 predicate places. [2020-10-11 19:03:53,073 INFO L481 AbstractCegarLoop]: Abstraction has has 326 places, 424 transitions, 4827 flow [2020-10-11 19:03:53,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:03:53,073 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:03:53,074 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:03:53,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-11 19:03:53,074 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:03:53,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:03:53,074 INFO L82 PathProgramCache]: Analyzing trace with hash 539074330, now seen corresponding path program 7 times [2020-10-11 19:03:53,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:03:53,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170438924] [2020-10-11 19:03:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:03:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:03:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:03:54,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170438924] [2020-10-11 19:03:54,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:03:54,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-11 19:03:54,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213599099] [2020-10-11 19:03:54,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:03:54,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:03:54,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:03:54,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:04:34,073 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2020-10-11 19:04:34,074 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 424 transitions, 4827 flow. Second operand 24 states. [2020-10-11 19:04:34,074 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:04:34,074 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2020-10-11 19:04:34,074 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:04:35,004 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:04:35,205 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-11 19:04:35,409 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-11 19:04:35,647 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-11 19:04:35,844 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-10-11 19:04:36,043 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-11 19:04:36,264 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-11 19:04:36,531 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-11 19:04:36,820 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-11 19:04:37,166 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-11 19:04:37,517 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-11 19:04:37,930 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-11 19:04:38,170 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-11 19:04:38,428 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-11 19:04:38,800 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-11 19:04:39,139 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-11 19:04:40,268 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-11 19:04:40,542 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-11 19:04:41,558 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-11 19:04:41,840 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-11 19:04:42,016 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-11 19:04:42,259 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-11 19:04:42,491 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-11 19:04:42,777 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-11 19:04:42,991 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-11 19:04:43,224 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 19:04:43,268 INFO L129 PetriNetUnfolder]: 915/5682 cut-off events. [2020-10-11 19:04:43,268 INFO L130 PetriNetUnfolder]: For 38084/38843 co-relation queries the response was YES. [2020-10-11 19:04:43,312 INFO L80 FinitePrefix]: Finished finitePrefix Result has 21052 conditions, 5682 events. 915/5682 cut-off events. For 38084/38843 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 65610 event pairs, 95 based on Foata normal form. 446/6068 useless extension candidates. Maximal degree in co-relation 20960. Up to 817 conditions per place. [2020-10-11 19:04:43,332 INFO L132 encePairwiseOnDemand]: 122/155 looper letters, 338 selfloop transitions, 284 changer transitions 3/705 dead transitions. [2020-10-11 19:04:43,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 705 transitions, 9907 flow [2020-10-11 19:04:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-11 19:04:43,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-11 19:04:43,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3348 transitions. [2020-10-11 19:04:43,337 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5684210526315789 [2020-10-11 19:04:43,338 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3348 transitions. [2020-10-11 19:04:43,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3348 transitions. [2020-10-11 19:04:43,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:04:43,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3348 transitions. [2020-10-11 19:04:43,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 39 states. [2020-10-11 19:04:43,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 39 states. [2020-10-11 19:04:43,348 INFO L81 ComplementDD]: Finished complementDD. Result 39 states. [2020-10-11 19:04:43,348 INFO L185 Difference]: Start difference. First operand has 326 places, 424 transitions, 4827 flow. Second operand 38 states and 3348 transitions. [2020-10-11 19:04:43,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 705 transitions, 9907 flow [2020-10-11 19:04:43,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 705 transitions, 9466 flow, removed 206 selfloop flow, removed 6 redundant places. [2020-10-11 19:04:43,529 INFO L241 Difference]: Finished difference. Result has 377 places, 551 transitions, 7635 flow [2020-10-11 19:04:43,529 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=4724, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7635, PETRI_PLACES=377, PETRI_TRANSITIONS=551} [2020-10-11 19:04:43,530 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 235 predicate places. [2020-10-11 19:04:43,530 INFO L481 AbstractCegarLoop]: Abstraction has has 377 places, 551 transitions, 7635 flow [2020-10-11 19:04:43,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:04:43,530 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:04:43,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:04:43,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-11 19:04:43,530 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:04:43,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:04:43,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1621673672, now seen corresponding path program 8 times [2020-10-11 19:04:43,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:04:43,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865674919] [2020-10-11 19:04:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:04:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:04:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:04:44,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865674919] [2020-10-11 19:04:44,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:04:44,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-11 19:04:44,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349132445] [2020-10-11 19:04:44,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:04:44,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:04:44,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:04:44,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:05:23,298 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2020-10-11 19:05:23,299 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 551 transitions, 7635 flow. Second operand 24 states. [2020-10-11 19:05:23,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:05:23,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2020-10-11 19:05:23,300 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:05:24,151 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-10-11 19:05:24,380 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-11 19:05:24,617 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2020-10-11 19:05:24,897 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-11 19:05:25,155 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-11 19:05:25,386 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-11 19:05:25,625 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-11 19:05:25,873 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-11 19:05:26,166 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-11 19:05:26,490 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 19:05:26,746 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 19:05:27,069 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-11 19:05:27,619 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-10-11 19:05:27,913 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-11 19:05:28,236 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-10-11 19:05:28,673 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-10-11 19:05:29,049 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2020-10-11 19:05:30,795 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-11 19:05:31,087 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-11 19:05:31,319 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-11 19:05:31,625 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-11 19:05:31,835 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2020-10-11 19:05:32,091 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-11 19:05:32,358 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-10-11 19:05:32,646 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-11 19:05:32,920 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-11 19:05:33,363 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-11 19:05:33,426 INFO L129 PetriNetUnfolder]: 1339/7954 cut-off events. [2020-10-11 19:05:33,426 INFO L130 PetriNetUnfolder]: For 69133/70028 co-relation queries the response was YES. [2020-10-11 19:05:33,491 INFO L80 FinitePrefix]: Finished finitePrefix Result has 32057 conditions, 7954 events. 1339/7954 cut-off events. For 69133/70028 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 99290 event pairs, 183 based on Foata normal form. 288/8090 useless extension candidates. Maximal degree in co-relation 31945. Up to 1196 conditions per place. [2020-10-11 19:05:33,525 INFO L132 encePairwiseOnDemand]: 122/155 looper letters, 572 selfloop transitions, 297 changer transitions 3/960 dead transitions. [2020-10-11 19:05:33,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 960 transitions, 14986 flow [2020-10-11 19:05:33,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-11 19:05:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-11 19:05:33,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3363 transitions. [2020-10-11 19:05:33,532 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5709677419354838 [2020-10-11 19:05:33,532 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3363 transitions. [2020-10-11 19:05:33,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3363 transitions. [2020-10-11 19:05:33,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:05:33,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3363 transitions. [2020-10-11 19:05:33,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 39 states. [2020-10-11 19:05:33,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 39 states. [2020-10-11 19:05:33,543 INFO L81 ComplementDD]: Finished complementDD. Result 39 states. [2020-10-11 19:05:33,543 INFO L185 Difference]: Start difference. First operand has 377 places, 551 transitions, 7635 flow. Second operand 38 states and 3363 transitions. [2020-10-11 19:05:33,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 960 transitions, 14986 flow [2020-10-11 19:05:33,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 960 transitions, 14432 flow, removed 103 selfloop flow, removed 11 redundant places. [2020-10-11 19:05:33,959 INFO L241 Difference]: Finished difference. Result has 424 places, 708 transitions, 10946 flow [2020-10-11 19:05:33,960 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=7254, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10946, PETRI_PLACES=424, PETRI_TRANSITIONS=708} [2020-10-11 19:05:33,960 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 282 predicate places. [2020-10-11 19:05:33,960 INFO L481 AbstractCegarLoop]: Abstraction has has 424 places, 708 transitions, 10946 flow [2020-10-11 19:05:33,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:05:33,960 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:05:33,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:05:33,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-11 19:05:33,960 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:05:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:05:33,961 INFO L82 PathProgramCache]: Analyzing trace with hash -240965698, now seen corresponding path program 9 times [2020-10-11 19:05:33,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:05:33,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354033279] [2020-10-11 19:05:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:05:33,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:05:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:05:34,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354033279] [2020-10-11 19:05:34,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:05:34,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:05:34,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894242352] [2020-10-11 19:05:34,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:05:34,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:05:34,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:05:34,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:05:50,915 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 155 [2020-10-11 19:05:50,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 708 transitions, 10946 flow. Second operand 18 states. [2020-10-11 19:05:50,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:05:50,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 155 [2020-10-11 19:05:50,917 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:05:51,727 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-11 19:05:51,941 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-11 19:05:54,883 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-11 19:05:54,970 INFO L129 PetriNetUnfolder]: 1066/7905 cut-off events. [2020-10-11 19:05:54,970 INFO L130 PetriNetUnfolder]: For 83372/84680 co-relation queries the response was YES. [2020-10-11 19:05:55,047 INFO L80 FinitePrefix]: Finished finitePrefix Result has 33278 conditions, 7905 events. 1066/7905 cut-off events. For 83372/84680 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 103048 event pairs, 168 based on Foata normal form. 326/8102 useless extension candidates. Maximal degree in co-relation 33146. Up to 1253 conditions per place. [2020-10-11 19:05:55,073 INFO L132 encePairwiseOnDemand]: 129/155 looper letters, 440 selfloop transitions, 270 changer transitions 3/886 dead transitions. [2020-10-11 19:05:55,073 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 886 transitions, 15386 flow [2020-10-11 19:05:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 19:05:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-11 19:05:55,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2058 transitions. [2020-10-11 19:05:55,077 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.6035190615835777 [2020-10-11 19:05:55,077 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2058 transitions. [2020-10-11 19:05:55,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2058 transitions. [2020-10-11 19:05:55,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:05:55,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2058 transitions. [2020-10-11 19:05:55,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-11 19:05:55,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-11 19:05:55,083 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-11 19:05:55,083 INFO L185 Difference]: Start difference. First operand has 424 places, 708 transitions, 10946 flow. Second operand 22 states and 2058 transitions. [2020-10-11 19:05:55,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 886 transitions, 15386 flow [2020-10-11 19:05:55,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 886 transitions, 14895 flow, removed 202 selfloop flow, removed 8 redundant places. [2020-10-11 19:05:55,600 INFO L241 Difference]: Finished difference. Result has 447 places, 766 transitions, 12590 flow [2020-10-11 19:05:55,601 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=10504, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12590, PETRI_PLACES=447, PETRI_TRANSITIONS=766} [2020-10-11 19:05:55,601 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 305 predicate places. [2020-10-11 19:05:55,601 INFO L481 AbstractCegarLoop]: Abstraction has has 447 places, 766 transitions, 12590 flow [2020-10-11 19:05:55,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:05:55,602 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:05:55,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:05:55,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-11 19:05:55,602 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:05:55,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:05:55,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1288401438, now seen corresponding path program 10 times [2020-10-11 19:05:55,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:05:55,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936799466] [2020-10-11 19:05:55,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:05:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:05:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:05:57,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936799466] [2020-10-11 19:05:57,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:05:57,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-11 19:05:57,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180966067] [2020-10-11 19:05:57,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:05:57,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:05:57,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:05:57,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:06:38,661 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2020-10-11 19:06:38,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 766 transitions, 12590 flow. Second operand 24 states. [2020-10-11 19:06:38,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:06:38,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2020-10-11 19:06:38,663 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:06:39,598 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:06:39,789 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-11 19:06:40,014 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-11 19:06:40,257 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-11 19:06:40,583 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-11 19:06:40,797 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-11 19:06:41,018 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-11 19:06:41,315 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-11 19:06:41,592 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-11 19:06:42,006 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-11 19:06:42,716 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-11 19:06:43,376 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-11 19:06:43,858 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-11 19:06:44,312 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-11 19:06:49,409 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-11 19:06:49,714 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-11 19:06:49,988 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-11 19:06:50,306 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-11 19:06:50,549 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-10-11 19:06:50,830 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-11 19:06:51,175 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-11 19:06:51,480 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-11 19:06:51,802 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-11 19:06:52,060 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 19:06:52,159 INFO L129 PetriNetUnfolder]: 1913/12546 cut-off events. [2020-10-11 19:06:52,159 INFO L130 PetriNetUnfolder]: For 146100/148195 co-relation queries the response was YES. [2020-10-11 19:06:52,425 INFO L80 FinitePrefix]: Finished finitePrefix Result has 54323 conditions, 12546 events. 1913/12546 cut-off events. For 146100/148195 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 174633 event pairs, 386 based on Foata normal form. 633/12991 useless extension candidates. Maximal degree in co-relation 54180. Up to 1863 conditions per place. [2020-10-11 19:06:52,455 INFO L132 encePairwiseOnDemand]: 122/155 looper letters, 703 selfloop transitions, 394 changer transitions 0/1190 dead transitions. [2020-10-11 19:06:52,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1190 transitions, 22608 flow [2020-10-11 19:06:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 19:06:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 19:06:52,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3184 transitions. [2020-10-11 19:06:52,459 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5706093189964158 [2020-10-11 19:06:52,459 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3184 transitions. [2020-10-11 19:06:52,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3184 transitions. [2020-10-11 19:06:52,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:06:52,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3184 transitions. [2020-10-11 19:06:52,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-11 19:06:52,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-11 19:06:52,467 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-11 19:06:52,468 INFO L185 Difference]: Start difference. First operand has 447 places, 766 transitions, 12590 flow. Second operand 36 states and 3184 transitions. [2020-10-11 19:06:52,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1190 transitions, 22608 flow [2020-10-11 19:06:53,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 1190 transitions, 21988 flow, removed 272 selfloop flow, removed 7 redundant places. [2020-10-11 19:06:53,510 INFO L241 Difference]: Finished difference. Result has 493 places, 941 transitions, 17497 flow [2020-10-11 19:06:53,511 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=12367, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=17497, PETRI_PLACES=493, PETRI_TRANSITIONS=941} [2020-10-11 19:06:53,511 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 351 predicate places. [2020-10-11 19:06:53,512 INFO L481 AbstractCegarLoop]: Abstraction has has 493 places, 941 transitions, 17497 flow [2020-10-11 19:06:53,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:06:53,512 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:06:53,512 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:06:53,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-11 19:06:53,512 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:06:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:06:53,513 INFO L82 PathProgramCache]: Analyzing trace with hash 269105466, now seen corresponding path program 11 times [2020-10-11 19:06:53,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:06:53,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113965944] [2020-10-11 19:06:53,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:06:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:06:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:06:55,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113965944] [2020-10-11 19:06:55,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:06:55,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-11 19:06:55,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527045916] [2020-10-11 19:06:55,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:06:55,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:06:55,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:06:55,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:07:51,907 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2020-10-11 19:07:51,909 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 941 transitions, 17497 flow. Second operand 24 states. [2020-10-11 19:07:51,909 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:07:51,909 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2020-10-11 19:07:51,909 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:07:52,824 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-11 19:07:53,118 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-11 19:07:53,351 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-11 19:07:53,650 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-11 19:07:53,949 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-11 19:07:54,260 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-11 19:07:54,499 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-11 19:07:54,768 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-11 19:07:55,099 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-11 19:07:55,497 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-11 19:07:55,809 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 19:07:56,212 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-11 19:07:57,013 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-11 19:07:57,355 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-11 19:07:57,750 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2020-10-11 19:07:58,367 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-11 19:07:58,875 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2020-10-11 19:08:03,431 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-11 19:08:03,749 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-11 19:08:04,018 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-11 19:08:04,348 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-11 19:08:04,581 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-11 19:08:04,872 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-11 19:08:05,222 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2020-10-11 19:08:05,546 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-11 19:08:05,899 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2020-10-11 19:08:06,174 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-11 19:08:06,316 INFO L129 PetriNetUnfolder]: 2500/15775 cut-off events. [2020-10-11 19:08:06,317 INFO L130 PetriNetUnfolder]: For 216911/219976 co-relation queries the response was YES. [2020-10-11 19:08:06,724 INFO L80 FinitePrefix]: Finished finitePrefix Result has 71872 conditions, 15775 events. 2500/15775 cut-off events. For 216911/219976 co-relation queries the response was YES. Maximal size of possible extension queue 962. Compared 227399 event pairs, 561 based on Foata normal form. 570/16048 useless extension candidates. Maximal degree in co-relation 71711. Up to 2858 conditions per place. [2020-10-11 19:08:06,765 INFO L132 encePairwiseOnDemand]: 122/155 looper letters, 869 selfloop transitions, 396 changer transitions 3/1364 dead transitions. [2020-10-11 19:08:06,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 1364 transitions, 27545 flow [2020-10-11 19:08:06,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-11 19:08:06,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-11 19:08:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3365 transitions. [2020-10-11 19:08:06,772 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5713073005093379 [2020-10-11 19:08:06,772 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3365 transitions. [2020-10-11 19:08:06,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3365 transitions. [2020-10-11 19:08:06,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:08:06,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3365 transitions. [2020-10-11 19:08:06,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 39 states. [2020-10-11 19:08:06,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 39 states. [2020-10-11 19:08:06,782 INFO L81 ComplementDD]: Finished complementDD. Result 39 states. [2020-10-11 19:08:06,783 INFO L185 Difference]: Start difference. First operand has 493 places, 941 transitions, 17497 flow. Second operand 38 states and 3365 transitions. [2020-10-11 19:08:06,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 1364 transitions, 27545 flow [2020-10-11 19:08:08,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 1364 transitions, 26755 flow, removed 278 selfloop flow, removed 9 redundant places. [2020-10-11 19:08:08,668 INFO L241 Difference]: Finished difference. Result has 543 places, 1103 transitions, 21851 flow [2020-10-11 19:08:08,669 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=16836, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=21851, PETRI_PLACES=543, PETRI_TRANSITIONS=1103} [2020-10-11 19:08:08,669 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 401 predicate places. [2020-10-11 19:08:08,669 INFO L481 AbstractCegarLoop]: Abstraction has has 543 places, 1103 transitions, 21851 flow [2020-10-11 19:08:08,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:08:08,669 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:08:08,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:08:08,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-11 19:08:08,670 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:08:08,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:08:08,670 INFO L82 PathProgramCache]: Analyzing trace with hash 335718716, now seen corresponding path program 12 times [2020-10-11 19:08:08,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:08:08,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910865364] [2020-10-11 19:08:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:08:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:08:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:08:09,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910865364] [2020-10-11 19:08:09,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:08:09,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-11 19:08:09,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789882596] [2020-10-11 19:08:09,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-11 19:08:09,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:08:09,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-11 19:08:09,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-11 19:08:26,398 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 155 [2020-10-11 19:08:26,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 1103 transitions, 21851 flow. Second operand 18 states. [2020-10-11 19:08:26,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:08:26,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 155 [2020-10-11 19:08:26,400 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:08:27,443 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-11 19:08:27,757 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-11 19:08:34,278 INFO L129 PetriNetUnfolder]: 1960/14829 cut-off events. [2020-10-11 19:08:34,278 INFO L130 PetriNetUnfolder]: For 229889/233661 co-relation queries the response was YES. [2020-10-11 19:08:34,740 INFO L80 FinitePrefix]: Finished finitePrefix Result has 68773 conditions, 14829 events. 1960/14829 cut-off events. For 229889/233661 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 218779 event pairs, 441 based on Foata normal form. 902/15509 useless extension candidates. Maximal degree in co-relation 68590. Up to 2273 conditions per place. [2020-10-11 19:08:34,780 INFO L132 encePairwiseOnDemand]: 129/155 looper letters, 667 selfloop transitions, 456 changer transitions 3/1348 dead transitions. [2020-10-11 19:08:34,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 1348 transitions, 29309 flow [2020-10-11 19:08:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 19:08:34,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-11 19:08:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2057 transitions. [2020-10-11 19:08:34,784 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.603225806451613 [2020-10-11 19:08:34,785 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2057 transitions. [2020-10-11 19:08:34,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2057 transitions. [2020-10-11 19:08:34,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:08:34,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2057 transitions. [2020-10-11 19:08:34,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 23 states. [2020-10-11 19:08:34,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 23 states. [2020-10-11 19:08:34,792 INFO L81 ComplementDD]: Finished complementDD. Result 23 states. [2020-10-11 19:08:34,792 INFO L185 Difference]: Start difference. First operand has 543 places, 1103 transitions, 21851 flow. Second operand 22 states and 2057 transitions. [2020-10-11 19:08:34,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 1348 transitions, 29309 flow [2020-10-11 19:08:36,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 1348 transitions, 28281 flow, removed 484 selfloop flow, removed 7 redundant places. [2020-10-11 19:08:36,757 INFO L241 Difference]: Finished difference. Result has 566 places, 1189 transitions, 24675 flow [2020-10-11 19:08:36,758 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=20963, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=374, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=24675, PETRI_PLACES=566, PETRI_TRANSITIONS=1189} [2020-10-11 19:08:36,758 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 424 predicate places. [2020-10-11 19:08:36,758 INFO L481 AbstractCegarLoop]: Abstraction has has 566 places, 1189 transitions, 24675 flow [2020-10-11 19:08:36,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-11 19:08:36,758 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:08:36,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:08:36,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-11 19:08:36,758 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:08:36,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:08:36,759 INFO L82 PathProgramCache]: Analyzing trace with hash -28268738, now seen corresponding path program 13 times [2020-10-11 19:08:36,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:08:36,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795204691] [2020-10-11 19:08:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:08:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:08:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:08:38,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795204691] [2020-10-11 19:08:38,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:08:38,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-11 19:08:38,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504433254] [2020-10-11 19:08:38,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:08:38,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:08:38,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:08:38,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:09:16,772 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2020-10-11 19:09:16,773 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 1189 transitions, 24675 flow. Second operand 24 states. [2020-10-11 19:09:16,773 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:09:16,773 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2020-10-11 19:09:16,773 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:09:17,706 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-11 19:09:18,009 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:09:18,277 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-11 19:09:18,550 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-11 19:09:18,838 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-11 19:09:19,244 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-11 19:09:19,664 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 19:09:20,273 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2020-10-11 19:09:21,947 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2020-10-11 19:09:28,554 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-11 19:09:28,926 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-11 19:09:29,276 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-11 19:09:29,790 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2020-10-11 19:09:30,284 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-11 19:09:30,469 INFO L129 PetriNetUnfolder]: 3173/20222 cut-off events. [2020-10-11 19:09:30,469 INFO L130 PetriNetUnfolder]: For 330671/335000 co-relation queries the response was YES. [2020-10-11 19:09:31,255 INFO L80 FinitePrefix]: Finished finitePrefix Result has 97434 conditions, 20222 events. 3173/20222 cut-off events. For 330671/335000 co-relation queries the response was YES. Maximal size of possible extension queue 1220. Compared 304680 event pairs, 869 based on Foata normal form. 772/20642 useless extension candidates. Maximal degree in co-relation 97241. Up to 3460 conditions per place. [2020-10-11 19:09:31,311 INFO L132 encePairwiseOnDemand]: 123/155 looper letters, 943 selfloop transitions, 465 changer transitions 0/1527 dead transitions. [2020-10-11 19:09:31,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 1527 transitions, 34570 flow [2020-10-11 19:09:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 19:09:31,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-11 19:09:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2225 transitions. [2020-10-11 19:09:31,315 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5741935483870968 [2020-10-11 19:09:31,315 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2225 transitions. [2020-10-11 19:09:31,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2225 transitions. [2020-10-11 19:09:31,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:09:31,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2225 transitions. [2020-10-11 19:09:31,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 26 states. [2020-10-11 19:09:31,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 26 states. [2020-10-11 19:09:31,321 INFO L81 ComplementDD]: Finished complementDD. Result 26 states. [2020-10-11 19:09:31,321 INFO L185 Difference]: Start difference. First operand has 566 places, 1189 transitions, 24675 flow. Second operand 25 states and 2225 transitions. [2020-10-11 19:09:31,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 1527 transitions, 34570 flow [2020-10-11 19:09:34,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 1527 transitions, 34161 flow, removed 160 selfloop flow, removed 7 redundant places. [2020-10-11 19:09:34,789 INFO L241 Difference]: Finished difference. Result has 599 places, 1290 transitions, 28701 flow [2020-10-11 19:09:34,790 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=24320, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=367, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=28701, PETRI_PLACES=599, PETRI_TRANSITIONS=1290} [2020-10-11 19:09:34,791 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 457 predicate places. [2020-10-11 19:09:34,791 INFO L481 AbstractCegarLoop]: Abstraction has has 599 places, 1290 transitions, 28701 flow [2020-10-11 19:09:34,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:09:34,791 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:09:34,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:09:34,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-11 19:09:34,792 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:09:34,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:09:34,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2017724198, now seen corresponding path program 14 times [2020-10-11 19:09:34,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:09:34,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726963600] [2020-10-11 19:09:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:09:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:09:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:09:36,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726963600] [2020-10-11 19:09:36,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:09:36,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-11 19:09:36,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502888813] [2020-10-11 19:09:36,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:09:36,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:09:36,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:09:36,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:10:44,481 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2020-10-11 19:10:44,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 1290 transitions, 28701 flow. Second operand 24 states. [2020-10-11 19:10:44,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:10:44,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2020-10-11 19:10:44,483 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:10:45,287 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-11 19:10:45,516 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2020-10-11 19:10:45,777 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-10-11 19:10:46,062 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2020-10-11 19:10:46,479 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-11 19:10:46,936 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2020-10-11 19:10:47,302 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2020-10-11 19:10:47,741 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 19:10:48,307 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-11 19:10:48,659 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-11 19:10:50,652 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-11 19:10:51,286 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2020-10-11 19:11:00,679 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-11 19:11:01,077 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-11 19:11:01,513 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-11 19:11:01,904 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2020-10-11 19:11:02,287 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-11 19:11:02,616 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2020-10-11 19:11:03,183 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2020-10-11 19:11:03,546 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-11 19:11:04,077 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-11 19:11:04,397 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-10-11 19:11:04,648 INFO L129 PetriNetUnfolder]: 3826/24539 cut-off events. [2020-10-11 19:11:04,648 INFO L130 PetriNetUnfolder]: For 436306/441679 co-relation queries the response was YES. [2020-10-11 19:11:05,709 INFO L80 FinitePrefix]: Finished finitePrefix Result has 121027 conditions, 24539 events. 3826/24539 cut-off events. For 436306/441679 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 384179 event pairs, 768 based on Foata normal form. 927/24986 useless extension candidates. Maximal degree in co-relation 120818. Up to 4435 conditions per place. [2020-10-11 19:11:05,776 INFO L132 encePairwiseOnDemand]: 122/155 looper letters, 1165 selfloop transitions, 514 changer transitions 3/1780 dead transitions. [2020-10-11 19:11:05,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 1780 transitions, 42733 flow [2020-10-11 19:11:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-11 19:11:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-11 19:11:05,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2844 transitions. [2020-10-11 19:11:05,781 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5733870967741935 [2020-10-11 19:11:05,781 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2844 transitions. [2020-10-11 19:11:05,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2844 transitions. [2020-10-11 19:11:05,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:11:05,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2844 transitions. [2020-10-11 19:11:05,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 33 states. [2020-10-11 19:11:05,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 33 states. [2020-10-11 19:11:05,788 INFO L81 ComplementDD]: Finished complementDD. Result 33 states. [2020-10-11 19:11:05,788 INFO L185 Difference]: Start difference. First operand has 599 places, 1290 transitions, 28701 flow. Second operand 32 states and 2844 transitions. [2020-10-11 19:11:05,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 1780 transitions, 42733 flow [2020-10-11 19:11:11,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 1780 transitions, 42127 flow, removed 274 selfloop flow, removed 7 redundant places. [2020-10-11 19:11:11,281 INFO L241 Difference]: Finished difference. Result has 639 places, 1429 transitions, 33674 flow [2020-10-11 19:11:11,282 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=28096, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=835, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=33674, PETRI_PLACES=639, PETRI_TRANSITIONS=1429} [2020-10-11 19:11:11,282 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 497 predicate places. [2020-10-11 19:11:11,283 INFO L481 AbstractCegarLoop]: Abstraction has has 639 places, 1429 transitions, 33674 flow [2020-10-11 19:11:11,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:11:11,283 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:11:11,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:11:11,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-11 19:11:11,283 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:11:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:11:11,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1096105832, now seen corresponding path program 15 times [2020-10-11 19:11:11,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:11:11,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733674428] [2020-10-11 19:11:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:11:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:11:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:11:13,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733674428] [2020-10-11 19:11:13,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:11:13,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-11 19:11:13,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689541834] [2020-10-11 19:11:13,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:11:13,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:11:13,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:11:13,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:12:27,177 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2020-10-11 19:12:27,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 1429 transitions, 33674 flow. Second operand 24 states. [2020-10-11 19:12:27,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:12:27,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2020-10-11 19:12:27,179 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:12:28,066 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-11 19:12:28,301 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-11 19:12:28,579 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-10-11 19:12:28,957 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-11 19:12:29,274 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-11 19:12:29,637 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-11 19:12:30,105 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-11 19:12:30,433 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-11 19:12:30,782 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-10-11 19:12:31,240 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-11 19:12:31,597 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2020-10-11 19:12:32,112 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-11 19:12:33,518 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-11 19:12:34,057 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2020-10-11 19:12:34,929 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-11 19:12:35,628 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-10-11 19:12:45,081 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-11 19:12:45,521 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-11 19:12:45,885 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-11 19:12:46,333 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-11 19:12:46,654 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-10-11 19:12:47,038 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-11 19:12:47,560 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-11 19:12:47,972 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-11 19:12:54,737 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-11 19:12:55,103 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-11 19:12:55,493 INFO L129 PetriNetUnfolder]: 3929/26042 cut-off events. [2020-10-11 19:12:55,493 INFO L130 PetriNetUnfolder]: For 495201/501748 co-relation queries the response was YES. [2020-10-11 19:12:56,690 INFO L80 FinitePrefix]: Finished finitePrefix Result has 130310 conditions, 26042 events. 3929/26042 cut-off events. For 495201/501748 co-relation queries the response was YES. Maximal size of possible extension queue 1643. Compared 413782 event pairs, 881 based on Foata normal form. 1962/27607 useless extension candidates. Maximal degree in co-relation 130085. Up to 3879 conditions per place. [2020-10-11 19:12:56,759 INFO L132 encePairwiseOnDemand]: 122/155 looper letters, 1137 selfloop transitions, 689 changer transitions 3/1956 dead transitions. [2020-10-11 19:12:56,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 1956 transitions, 48291 flow [2020-10-11 19:12:56,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-11 19:12:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-11 19:12:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3186 transitions. [2020-10-11 19:12:56,764 INFO L551 CegarLoopForPetriNet]: DFA transition density 0.5709677419354838 [2020-10-11 19:12:56,764 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3186 transitions. [2020-10-11 19:12:56,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3186 transitions. [2020-10-11 19:12:56,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-11 19:12:56,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3186 transitions. [2020-10-11 19:12:56,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 37 states. [2020-10-11 19:12:56,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 37 states. [2020-10-11 19:12:56,772 INFO L81 ComplementDD]: Finished complementDD. Result 37 states. [2020-10-11 19:12:56,772 INFO L185 Difference]: Start difference. First operand has 639 places, 1429 transitions, 33674 flow. Second operand 36 states and 3186 transitions. [2020-10-11 19:12:56,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 1956 transitions, 48291 flow [2020-10-11 19:13:02,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 1956 transitions, 47562 flow, removed 269 selfloop flow, removed 8 redundant places. [2020-10-11 19:13:02,657 INFO L241 Difference]: Finished difference. Result has 688 places, 1608 transitions, 40526 flow [2020-10-11 19:13:02,659 INFO L325 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=33033, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=536, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=40526, PETRI_PLACES=688, PETRI_TRANSITIONS=1608} [2020-10-11 19:13:02,660 INFO L341 CegarLoopForPetriNet]: 142 programPoint places, 546 predicate places. [2020-10-11 19:13:02,660 INFO L481 AbstractCegarLoop]: Abstraction has has 688 places, 1608 transitions, 40526 flow [2020-10-11 19:13:02,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-11 19:13:02,660 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-11 19:13:02,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 19:13:02,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-11 19:13:02,661 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-11 19:13:02,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 19:13:02,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1930127896, now seen corresponding path program 16 times [2020-10-11 19:13:02,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 19:13:02,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720915618] [2020-10-11 19:13:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 19:13:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 19:13:03,162 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-10-11 19:13:03,300 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-10-11 19:13:04,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 19:13:04,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720915618] [2020-10-11 19:13:04,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 19:13:04,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-10-11 19:13:04,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616122037] [2020-10-11 19:13:04,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-11 19:13:04,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 19:13:04,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-11 19:13:04,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2020-10-11 19:13:53,316 INFO L506 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2020-10-11 19:13:53,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 1608 transitions, 40526 flow. Second operand 24 states. [2020-10-11 19:13:53,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-11 19:13:53,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2020-10-11 19:13:53,318 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-11 19:13:54,124 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-11 19:13:54,328 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-11 19:13:54,614 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-11 19:13:55,004 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-11 19:13:55,321 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-11 19:13:55,738 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-11 19:13:56,131 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-11 19:13:56,613 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-11 19:13:56,943 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-11 19:13:57,316 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-11 19:13:57,788 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 19:13:58,168 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-11 19:13:58,674 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2020-10-11 19:14:00,447 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-11 19:14:01,176 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-10-11 19:14:02,276 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2020-10-11 19:14:03,160 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 Received shutdown request... [2020-10-11 19:14:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-11 19:14:06,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-11 19:14:06,392 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-11 19:14:06,397 WARN L235 ceAbstractionStarter]: Timeout [2020-10-11 19:14:06,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 07:14:06 BasicIcfg [2020-10-11 19:14:06,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 19:14:06,398 INFO L168 Benchmark]: Toolchain (without parser) took 788078.81 ms. Allocated memory was 249.6 MB in the beginning and 5.8 GB in the end (delta: 5.5 GB). Free memory was 202.2 MB in the beginning and 4.0 GB in the end (delta: -3.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 14.2 GB. [2020-10-11 19:14:06,398 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 19:14:06,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1440.68 ms. Allocated memory was 249.6 MB in the beginning and 353.9 MB in the end (delta: 104.3 MB). Free memory was 202.2 MB in the beginning and 313.2 MB in the end (delta: -111.0 MB). Peak memory consumption was 109.3 MB. Max. memory is 14.2 GB. [2020-10-11 19:14:06,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.39 ms. Allocated memory is still 353.9 MB. Free memory was 313.2 MB in the beginning and 309.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. [2020-10-11 19:14:06,400 INFO L168 Benchmark]: Boogie Preprocessor took 64.42 ms. Allocated memory is still 353.9 MB. Free memory was 309.8 MB in the beginning and 306.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. [2020-10-11 19:14:06,400 INFO L168 Benchmark]: RCFGBuilder took 686.25 ms. Allocated memory is still 353.9 MB. Free memory was 306.4 MB in the beginning and 259.1 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 14.2 GB. [2020-10-11 19:14:06,400 INFO L168 Benchmark]: TraceAbstraction took 785804.43 ms. Allocated memory was 353.9 MB in the beginning and 5.8 GB in the end (delta: 5.4 GB). Free memory was 259.1 MB in the beginning and 4.0 GB in the end (delta: -3.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 14.2 GB. [2020-10-11 19:14:06,402 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 249.6 MB. Free memory is still 225.9 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 1440.68 ms. Allocated memory was 249.6 MB in the beginning and 353.9 MB in the end (delta: 104.3 MB). Free memory was 202.2 MB in the beginning and 313.2 MB in the end (delta: -111.0 MB). Peak memory consumption was 109.3 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 78.39 ms. Allocated memory is still 353.9 MB. Free memory was 313.2 MB in the beginning and 309.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 64.42 ms. Allocated memory is still 353.9 MB. Free memory was 309.8 MB in the beginning and 306.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.2 GB. * RCFGBuilder took 686.25 ms. Allocated memory is still 353.9 MB. Free memory was 306.4 MB in the beginning and 259.1 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 14.2 GB. * TraceAbstraction took 785804.43 ms. Allocated memory was 353.9 MB in the beginning and 5.8 GB in the end (delta: 5.4 GB). Free memory was 259.1 MB in the beginning and 4.0 GB in the end (delta: -3.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (24states, 83/155 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 53845 conditions, 9195 events (2109/9194 cut-off events. For 239776/240225 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 133967 event pairs, 772 based on Foata normal form. 98/10140 useless extension candidates. Maximal degree in co-relation 53598. Up to 2268 conditions per place.). - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (24states, 83/155 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 53845 conditions, 9195 events (2109/9194 cut-off events. For 239776/240225 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 133967 event pairs, 772 based on Foata normal form. 98/10140 useless extension candidates. Maximal degree in co-relation 53598. Up to 2268 conditions per place.). - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (24states, 83/155 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 53845 conditions, 9195 events (2109/9194 cut-off events. For 239776/240225 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 133967 event pairs, 772 based on Foata normal form. 98/10140 useless extension candidates. Maximal degree in co-relation 53598. Up to 2268 conditions per place.). - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (24states, 83/155 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 53845 conditions, 9195 events (2109/9194 cut-off events. For 239776/240225 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 133967 event pairs, 772 based on Foata normal form. 98/10140 useless extension candidates. Maximal degree in co-relation 53598. Up to 2268 conditions per place.). - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (24states, 83/155 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 53845 conditions, 9195 events (2109/9194 cut-off events. For 239776/240225 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 133967 event pairs, 772 based on Foata normal form. 98/10140 useless extension candidates. Maximal degree in co-relation 53598. Up to 2268 conditions per place.). - TimeoutResultAtElement [Line: 1682]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1682). Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (24states, 83/155 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 53845 conditions, 9195 events (2109/9194 cut-off events. For 239776/240225 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 133967 event pairs, 772 based on Foata normal form. 98/10140 useless extension candidates. Maximal degree in co-relation 53598. Up to 2268 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 130 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: TIMEOUT, OverallTime: 785.6s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 764.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 7373 SDtfs, 18025 SDslu, 141610 SDs, 0 SdLazy, 87392 SolverSat, 2103 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 118.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 858 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 793 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4013 ImplicationChecksByTransitivity, 82.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40526occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 19.6s InterpolantComputationTime, 2026 NumberOfCodeBlocks, 2026 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2004 ConstructedInterpolants, 0 QuantifiedInterpolants, 2609645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown