/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-0e22065b97d0a1f8b3904e080cebe0f05e88d2b7-0e22065 [2021-06-10 21:19:08,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-10 21:19:08,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-10 21:19:08,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-10 21:19:08,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-10 21:19:08,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-10 21:19:08,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-10 21:19:08,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-10 21:19:08,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-10 21:19:08,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-10 21:19:08,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-10 21:19:08,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-10 21:19:08,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-10 21:19:08,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-10 21:19:08,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-10 21:19:08,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-10 21:19:08,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-10 21:19:08,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-10 21:19:08,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-10 21:19:08,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-10 21:19:08,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-10 21:19:08,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-10 21:19:08,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-10 21:19:08,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-10 21:19:08,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-10 21:19:08,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-10 21:19:08,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-10 21:19:08,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-10 21:19:08,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-10 21:19:08,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-10 21:19:08,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-10 21:19:08,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-10 21:19:08,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-10 21:19:08,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-10 21:19:08,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-10 21:19:08,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-10 21:19:08,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-10 21:19:08,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-10 21:19:08,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-10 21:19:08,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-10 21:19:08,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-10 21:19:08,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2021-06-10 21:19:08,122 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-10 21:19:08,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-10 21:19:08,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-10 21:19:08,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-10 21:19:08,124 INFO L138 SettingsManager]: * Use SBE=true [2021-06-10 21:19:08,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-10 21:19:08,124 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-10 21:19:08,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-10 21:19:08,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-10 21:19:08,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-10 21:19:08,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-10 21:19:08,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-10 21:19:08,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-10 21:19:08,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-10 21:19:08,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-10 21:19:08,126 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-10 21:19:08,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-10 21:19:08,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-10 21:19:08,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-10 21:19:08,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-10 21:19:08,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-10 21:19:08,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:19:08,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-10 21:19:08,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-10 21:19:08,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-10 21:19:08,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-10 21:19:08,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-10 21:19:08,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-06-10 21:19:08,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-10 21:19:08,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-10 21:19:08,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-10 21:19:08,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-10 21:19:08,378 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-10 21:19:08,378 INFO L275 PluginConnector]: CDTParser initialized [2021-06-10 21:19:08,379 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2021-06-10 21:19:08,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/572c399c4/1edd441c827f4fa9aad603dccd21f2e1/FLAG6de5e3920 [2021-06-10 21:19:08,851 INFO L306 CDTParser]: Found 1 translation units. [2021-06-10 21:19:08,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2021-06-10 21:19:08,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/572c399c4/1edd441c827f4fa9aad603dccd21f2e1/FLAG6de5e3920 [2021-06-10 21:19:08,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/572c399c4/1edd441c827f4fa9aad603dccd21f2e1 [2021-06-10 21:19:08,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-10 21:19:08,897 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-10 21:19:08,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-10 21:19:08,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-10 21:19:08,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-10 21:19:08,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:19:08" (1/1) ... [2021-06-10 21:19:08,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d88e618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:08, skipping insertion in model container [2021-06-10 21:19:08,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.06 09:19:08" (1/1) ... [2021-06-10 21:19:08,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-10 21:19:08,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-10 21:19:09,101 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i[950,963] [2021-06-10 21:19:09,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:19:09,193 INFO L203 MainTranslator]: Completed pre-run [2021-06-10 21:19:09,203 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i[950,963] [2021-06-10 21:19:09,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-10 21:19:09,282 INFO L208 MainTranslator]: Completed translation [2021-06-10 21:19:09,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09 WrapperNode [2021-06-10 21:19:09,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-10 21:19:09,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-10 21:19:09,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-10 21:19:09,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-10 21:19:09,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... [2021-06-10 21:19:09,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... [2021-06-10 21:19:09,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-10 21:19:09,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-10 21:19:09,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-10 21:19:09,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-10 21:19:09,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... [2021-06-10 21:19:09,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... [2021-06-10 21:19:09,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... [2021-06-10 21:19:09,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... [2021-06-10 21:19:09,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... [2021-06-10 21:19:09,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... [2021-06-10 21:19:09,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... [2021-06-10 21:19:09,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-10 21:19:09,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-10 21:19:09,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-10 21:19:09,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-10 21:19:09,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-10 21:19:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-10 21:19:09,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-10 21:19:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-10 21:19:09,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-10 21:19:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-10 21:19:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-10 21:19:09,395 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-10 21:19:09,395 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-10 21:19:09,396 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-10 21:19:09,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-10 21:19:09,396 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-06-10 21:19:09,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-06-10 21:19:09,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-10 21:19:09,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-10 21:19:09,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-10 21:19:09,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-10 21:19:09,398 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-10 21:19:09,695 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-10 21:19:09,695 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-10 21:19:09,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:19:09 BoogieIcfgContainer [2021-06-10 21:19:09,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-10 21:19:09,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-10 21:19:09,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-10 21:19:09,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-10 21:19:09,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.06 09:19:08" (1/3) ... [2021-06-10 21:19:09,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbc5c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:19:09, skipping insertion in model container [2021-06-10 21:19:09,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.06 09:19:09" (2/3) ... [2021-06-10 21:19:09,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dbc5c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.06 09:19:09, skipping insertion in model container [2021-06-10 21:19:09,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.06 09:19:09" (3/3) ... [2021-06-10 21:19:09,702 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2021-06-10 21:19:09,705 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-10 21:19:09,708 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-06-10 21:19:09,708 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-10 21:19:09,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,740 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,740 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,741 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,741 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,741 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,742 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,742 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,743 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,743 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,743 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,746 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,746 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,746 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,747 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,747 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,748 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,748 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,749 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,749 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,749 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,749 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,749 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,749 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,749 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,750 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,750 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,750 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,750 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,752 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,752 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,752 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,752 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,756 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,756 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,757 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,757 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,759 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,759 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,759 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,764 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,764 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-10 21:19:09,766 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-10 21:19:09,778 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-06-10 21:19:09,790 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-06-10 21:19:09,790 INFO L377 AbstractCegarLoop]: Hoare is false [2021-06-10 21:19:09,790 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-10 21:19:09,790 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-10 21:19:09,790 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-10 21:19:09,790 INFO L381 AbstractCegarLoop]: Difference is false [2021-06-10 21:19:09,791 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-10 21:19:09,791 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-10 21:19:09,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 85 transitions, 190 flow [2021-06-10 21:19:09,833 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-06-10 21:19:09,834 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:19:09,836 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 64 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-06-10 21:19:09,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 85 transitions, 190 flow [2021-06-10 21:19:09,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 67 transitions, 146 flow [2021-06-10 21:19:09,840 INFO L168 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-06-10 21:19:09,848 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 67 transitions, 146 flow [2021-06-10 21:19:09,850 INFO L138 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 67 transitions, 146 flow [2021-06-10 21:19:09,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 79 places, 67 transitions, 146 flow [2021-06-10 21:19:09,862 INFO L129 PetriNetUnfolder]: 1/67 cut-off events. [2021-06-10 21:19:09,862 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:19:09,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 67 events. 1/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2021-06-10 21:19:09,864 INFO L151 LiptonReduction]: Number of co-enabled transitions 1250 [2021-06-10 21:19:09,911 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:09,918 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:09,944 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:09,945 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:09,951 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:09,952 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:09,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:09,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:09,996 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:09,997 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:10,051 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,051 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:19:10,052 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:19:10,076 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,076 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:10,154 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,154 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:19:10,155 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:19:10,178 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,180 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,214 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,241 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,242 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:10,302 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:19:10,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:19:10,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:10,371 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:19:10,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:19:10,436 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:10,444 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,444 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:19:10,446 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:19:10,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,639 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,717 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,763 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,764 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,933 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,934 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:10,984 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:10,986 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:11,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,020 INFO L147 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size 1 [2021-06-10 21:19:11,036 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,037 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:11,069 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,070 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:11,153 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:11,156 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:19:11,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:19:11,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:11,310 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:11,316 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-10 21:19:11,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 21:19:11,339 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,352 INFO L147 QuantifierPusher]: treesize reduction 31, result has 11.4 percent of original size 4 [2021-06-10 21:19:11,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:11,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-06-10 21:19:11,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-06-10 21:19:11,719 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-10 21:19:11,915 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-10 21:19:11,986 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:11,994 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:11,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-06-10 21:19:11,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:19:11,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:11,997 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:11,998 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:11,998 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-06-10 21:19:11,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-06-10 21:19:11,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-06-10 21:19:12,000 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-06-10 21:19:12,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-06-10 21:19:12,010 INFO L163 LiptonReduction]: Checked pairs total: 2055 [2021-06-10 21:19:12,011 INFO L165 LiptonReduction]: Total number of compositions: 50 [2021-06-10 21:19:12,012 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2173 [2021-06-10 21:19:12,019 INFO L129 PetriNetUnfolder]: 0/16 cut-off events. [2021-06-10 21:19:12,019 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:19:12,019 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:12,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:12,020 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:12,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:12,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1819579583, now seen corresponding path program 1 times [2021-06-10 21:19:12,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:12,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139474461] [2021-06-10 21:19:12,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:12,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:12,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139474461] [2021-06-10 21:19:12,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:12,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:19:12,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842870506] [2021-06-10 21:19:12,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-10 21:19:12,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:12,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-10 21:19:12,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-10 21:19:12,163 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 135 [2021-06-10 21:19:12,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 54 flow. Second operand has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:12,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 135 [2021-06-10 21:19:12,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:12,171 INFO L129 PetriNetUnfolder]: 0/20 cut-off events. [2021-06-10 21:19:12,171 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:19:12,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 1/21 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-06-10 21:19:12,172 INFO L132 encePairwiseOnDemand]: 134/135 looper letters, 0 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2021-06-10 21:19:12,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 20 transitions, 52 flow [2021-06-10 21:19:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-10 21:19:12,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-06-10 21:19:12,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 257 transitions. [2021-06-10 21:19:12,179 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.9518518518518518 [2021-06-10 21:19:12,179 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 257 transitions. [2021-06-10 21:19:12,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 257 transitions. [2021-06-10 21:19:12,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:12,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 257 transitions. [2021-06-10 21:19:12,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,187 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,188 INFO L185 Difference]: Start difference. First operand has 33 places, 21 transitions, 54 flow. Second operand 2 states and 257 transitions. [2021-06-10 21:19:12,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 20 transitions, 52 flow [2021-06-10 21:19:12,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 48 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-06-10 21:19:12,190 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 48 flow [2021-06-10 21:19:12,191 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=48, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2021-06-10 21:19:12,192 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2021-06-10 21:19:12,192 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 48 flow [2021-06-10 21:19:12,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,192 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:12,193 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:12,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-10 21:19:12,193 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:12,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:12,193 INFO L82 PathProgramCache]: Analyzing trace with hash 572392223, now seen corresponding path program 1 times [2021-06-10 21:19:12,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:12,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16265845] [2021-06-10 21:19:12,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:12,285 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:19:12,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:19:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:12,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16265845] [2021-06-10 21:19:12,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:12,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-06-10 21:19:12,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813624175] [2021-06-10 21:19:12,294 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-10 21:19:12,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:12,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-10 21:19:12,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-10 21:19:12,296 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2021-06-10 21:19:12,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:12,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2021-06-10 21:19:12,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:12,343 INFO L129 PetriNetUnfolder]: 148/336 cut-off events. [2021-06-10 21:19:12,343 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-06-10 21:19:12,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 600 conditions, 336 events. 148/336 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1848 event pairs, 66 based on Foata normal form. 15/327 useless extension candidates. Maximal degree in co-relation 597. Up to 189 conditions per place. [2021-06-10 21:19:12,346 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 7 selfloop transitions, 7 changer transitions 0/26 dead transitions. [2021-06-10 21:19:12,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 88 flow [2021-06-10 21:19:12,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-10 21:19:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-06-10 21:19:12,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2021-06-10 21:19:12,348 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7925925925925926 [2021-06-10 21:19:12,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2021-06-10 21:19:12,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2021-06-10 21:19:12,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:12,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2021-06-10 21:19:12,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,351 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 48 flow. Second operand 3 states and 321 transitions. [2021-06-10 21:19:12,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 88 flow [2021-06-10 21:19:12,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:19:12,353 INFO L241 Difference]: Finished difference. Result has 34 places, 26 transitions, 102 flow [2021-06-10 21:19:12,353 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2021-06-10 21:19:12,353 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2021-06-10 21:19:12,353 INFO L480 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 102 flow [2021-06-10 21:19:12,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,353 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:12,353 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:12,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-10 21:19:12,354 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:12,354 INFO L82 PathProgramCache]: Analyzing trace with hash 564288797, now seen corresponding path program 1 times [2021-06-10 21:19:12,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:12,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715224511] [2021-06-10 21:19:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:12,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:12,400 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:19:12,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:19:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:12,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715224511] [2021-06-10 21:19:12,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:12,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:19:12,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126712808] [2021-06-10 21:19:12,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:19:12,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:12,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:19:12,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:19:12,408 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2021-06-10 21:19:12,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:12,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2021-06-10 21:19:12,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:12,439 INFO L129 PetriNetUnfolder]: 105/258 cut-off events. [2021-06-10 21:19:12,439 INFO L130 PetriNetUnfolder]: For 74/360 co-relation queries the response was YES. [2021-06-10 21:19:12,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 258 events. 105/258 cut-off events. For 74/360 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1264 event pairs, 2 based on Foata normal form. 3/249 useless extension candidates. Maximal degree in co-relation 733. Up to 142 conditions per place. [2021-06-10 21:19:12,441 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 14 selfloop transitions, 11 changer transitions 0/37 dead transitions. [2021-06-10 21:19:12,441 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 208 flow [2021-06-10 21:19:12,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:19:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:19:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2021-06-10 21:19:12,443 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2021-06-10 21:19:12,443 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 429 transitions. [2021-06-10 21:19:12,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 429 transitions. [2021-06-10 21:19:12,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:12,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 429 transitions. [2021-06-10 21:19:12,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,446 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,446 INFO L185 Difference]: Start difference. First operand has 34 places, 26 transitions, 102 flow. Second operand 4 states and 429 transitions. [2021-06-10 21:19:12,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 208 flow [2021-06-10 21:19:12,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:19:12,448 INFO L241 Difference]: Finished difference. Result has 38 places, 34 transitions, 178 flow [2021-06-10 21:19:12,449 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2021-06-10 21:19:12,449 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2021-06-10 21:19:12,449 INFO L480 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 178 flow [2021-06-10 21:19:12,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,449 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:12,449 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:12,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-10 21:19:12,449 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:12,450 INFO L82 PathProgramCache]: Analyzing trace with hash 564273576, now seen corresponding path program 1 times [2021-06-10 21:19:12,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:12,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386463959] [2021-06-10 21:19:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:12,504 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:12,508 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:19:12,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:19:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:12,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386463959] [2021-06-10 21:19:12,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:12,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:19:12,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828229674] [2021-06-10 21:19:12,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:19:12,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:12,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:19:12,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:19:12,519 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2021-06-10 21:19:12,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:12,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2021-06-10 21:19:12,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:12,551 INFO L129 PetriNetUnfolder]: 81/213 cut-off events. [2021-06-10 21:19:12,551 INFO L130 PetriNetUnfolder]: For 219/714 co-relation queries the response was YES. [2021-06-10 21:19:12,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 213 events. 81/213 cut-off events. For 219/714 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1008 event pairs, 5 based on Foata normal form. 17/223 useless extension candidates. Maximal degree in co-relation 709. Up to 114 conditions per place. [2021-06-10 21:19:12,555 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 20 selfloop transitions, 18 changer transitions 0/50 dead transitions. [2021-06-10 21:19:12,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 358 flow [2021-06-10 21:19:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:19:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:19:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2021-06-10 21:19:12,557 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7944444444444444 [2021-06-10 21:19:12,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 429 transitions. [2021-06-10 21:19:12,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 429 transitions. [2021-06-10 21:19:12,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:12,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 429 transitions. [2021-06-10 21:19:12,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,560 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,560 INFO L185 Difference]: Start difference. First operand has 38 places, 34 transitions, 178 flow. Second operand 4 states and 429 transitions. [2021-06-10 21:19:12,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 358 flow [2021-06-10 21:19:12,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 358 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:19:12,565 INFO L241 Difference]: Finished difference. Result has 44 places, 46 transitions, 350 flow [2021-06-10 21:19:12,565 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=44, PETRI_TRANSITIONS=46} [2021-06-10 21:19:12,565 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2021-06-10 21:19:12,565 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 46 transitions, 350 flow [2021-06-10 21:19:12,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,565 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:12,565 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:12,566 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-10 21:19:12,566 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:12,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:12,566 INFO L82 PathProgramCache]: Analyzing trace with hash 312583987, now seen corresponding path program 1 times [2021-06-10 21:19:12,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:12,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949696166] [2021-06-10 21:19:12,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:12,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:12,618 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:19:12,619 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:19:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:12,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949696166] [2021-06-10 21:19:12,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:12,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:19:12,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004309390] [2021-06-10 21:19:12,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:19:12,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:12,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:19:12,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:19:12,628 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2021-06-10 21:19:12,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 46 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:12,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2021-06-10 21:19:12,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:12,661 INFO L129 PetriNetUnfolder]: 74/201 cut-off events. [2021-06-10 21:19:12,661 INFO L130 PetriNetUnfolder]: For 479/860 co-relation queries the response was YES. [2021-06-10 21:19:12,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 201 events. 74/201 cut-off events. For 479/860 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 964 event pairs, 1 based on Foata normal form. 9/202 useless extension candidates. Maximal degree in co-relation 831. Up to 103 conditions per place. [2021-06-10 21:19:12,663 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 24 selfloop transitions, 21 changer transitions 0/57 dead transitions. [2021-06-10 21:19:12,663 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 544 flow [2021-06-10 21:19:12,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:19:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:19:12,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2021-06-10 21:19:12,665 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7888888888888889 [2021-06-10 21:19:12,665 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 426 transitions. [2021-06-10 21:19:12,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 426 transitions. [2021-06-10 21:19:12,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:12,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 426 transitions. [2021-06-10 21:19:12,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,667 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,667 INFO L185 Difference]: Start difference. First operand has 44 places, 46 transitions, 350 flow. Second operand 4 states and 426 transitions. [2021-06-10 21:19:12,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 544 flow [2021-06-10 21:19:12,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 57 transitions, 544 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-06-10 21:19:12,672 INFO L241 Difference]: Finished difference. Result has 50 places, 53 transitions, 528 flow [2021-06-10 21:19:12,672 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=528, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2021-06-10 21:19:12,672 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 17 predicate places. [2021-06-10 21:19:12,672 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 528 flow [2021-06-10 21:19:12,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,672 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:12,672 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:12,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-10 21:19:12,673 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:12,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1100153813, now seen corresponding path program 1 times [2021-06-10 21:19:12,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:12,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415470753] [2021-06-10 21:19:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:12,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:12,727 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:19:12,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:19:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:12,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415470753] [2021-06-10 21:19:12,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:12,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:19:12,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402300182] [2021-06-10 21:19:12,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:19:12,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:12,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:19:12,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:19:12,736 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2021-06-10 21:19:12,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 528 flow. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:12,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2021-06-10 21:19:12,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:12,767 INFO L129 PetriNetUnfolder]: 69/187 cut-off events. [2021-06-10 21:19:12,767 INFO L130 PetriNetUnfolder]: For 755/1164 co-relation queries the response was YES. [2021-06-10 21:19:12,768 INFO L84 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 187 events. 69/187 cut-off events. For 755/1164 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 880 event pairs, 7 based on Foata normal form. 18/198 useless extension candidates. Maximal degree in co-relation 928. Up to 95 conditions per place. [2021-06-10 21:19:12,769 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 24 selfloop transitions, 28 changer transitions 0/64 dead transitions. [2021-06-10 21:19:12,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 768 flow [2021-06-10 21:19:12,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:19:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:19:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2021-06-10 21:19:12,771 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7888888888888889 [2021-06-10 21:19:12,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 426 transitions. [2021-06-10 21:19:12,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 426 transitions. [2021-06-10 21:19:12,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:12,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 426 transitions. [2021-06-10 21:19:12,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,774 INFO L185 Difference]: Start difference. First operand has 50 places, 53 transitions, 528 flow. Second operand 4 states and 426 transitions. [2021-06-10 21:19:12,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 768 flow [2021-06-10 21:19:12,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 762 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:19:12,778 INFO L241 Difference]: Finished difference. Result has 55 places, 60 transitions, 757 flow [2021-06-10 21:19:12,778 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=757, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2021-06-10 21:19:12,778 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 22 predicate places. [2021-06-10 21:19:12,778 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 757 flow [2021-06-10 21:19:12,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,779 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:12,779 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:12,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-10 21:19:12,779 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:12,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:12,779 INFO L82 PathProgramCache]: Analyzing trace with hash 377164448, now seen corresponding path program 1 times [2021-06-10 21:19:12,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:12,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539651225] [2021-06-10 21:19:12,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:12,813 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:12,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,814 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:12,817 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:19:12,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:19:12,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:12,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539651225] [2021-06-10 21:19:12,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:12,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:19:12,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716828742] [2021-06-10 21:19:12,826 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:19:12,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:12,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:19:12,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:19:12,827 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2021-06-10 21:19:12,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 757 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:12,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2021-06-10 21:19:12,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:12,862 INFO L129 PetriNetUnfolder]: 63/194 cut-off events. [2021-06-10 21:19:12,862 INFO L130 PetriNetUnfolder]: For 1138/1539 co-relation queries the response was YES. [2021-06-10 21:19:12,863 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 194 events. 63/194 cut-off events. For 1138/1539 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 996 event pairs, 7 based on Foata normal form. 21/206 useless extension candidates. Maximal degree in co-relation 1078. Up to 93 conditions per place. [2021-06-10 21:19:12,864 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 17 selfloop transitions, 33 changer transitions 3/65 dead transitions. [2021-06-10 21:19:12,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 65 transitions, 938 flow [2021-06-10 21:19:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:19:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:19:12,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2021-06-10 21:19:12,865 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7888888888888889 [2021-06-10 21:19:12,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 426 transitions. [2021-06-10 21:19:12,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 426 transitions. [2021-06-10 21:19:12,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:12,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 426 transitions. [2021-06-10 21:19:12,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,867 INFO L185 Difference]: Start difference. First operand has 55 places, 60 transitions, 757 flow. Second operand 4 states and 426 transitions. [2021-06-10 21:19:12,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 65 transitions, 938 flow [2021-06-10 21:19:12,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 65 transitions, 933 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-06-10 21:19:12,875 INFO L241 Difference]: Finished difference. Result has 60 places, 60 transitions, 900 flow [2021-06-10 21:19:12,875 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=900, PETRI_PLACES=60, PETRI_TRANSITIONS=60} [2021-06-10 21:19:12,875 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2021-06-10 21:19:12,875 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 60 transitions, 900 flow [2021-06-10 21:19:12,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,876 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:12,877 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:12,877 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-10 21:19:12,877 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:12,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:12,877 INFO L82 PathProgramCache]: Analyzing trace with hash 191343411, now seen corresponding path program 1 times [2021-06-10 21:19:12,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:12,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796819358] [2021-06-10 21:19:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:12,935 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,936 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:12,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:12,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:12,942 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:19:12,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:19:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:12,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796819358] [2021-06-10 21:19:12,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:12,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:19:12,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584398426] [2021-06-10 21:19:12,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:19:12,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:12,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:19:12,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:19:12,953 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2021-06-10 21:19:12,953 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 60 transitions, 900 flow. Second operand has 5 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:12,953 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:12,953 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2021-06-10 21:19:12,953 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:13,006 INFO L129 PetriNetUnfolder]: 65/232 cut-off events. [2021-06-10 21:19:13,006 INFO L130 PetriNetUnfolder]: For 2064/2859 co-relation queries the response was YES. [2021-06-10 21:19:13,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 232 events. 65/232 cut-off events. For 2064/2859 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1336 event pairs, 4 based on Foata normal form. 25/249 useless extension candidates. Maximal degree in co-relation 1409. Up to 105 conditions per place. [2021-06-10 21:19:13,008 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 20 selfloop transitions, 19 changer transitions 31/82 dead transitions. [2021-06-10 21:19:13,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 82 transitions, 1380 flow [2021-06-10 21:19:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:19:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:19:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 535 transitions. [2021-06-10 21:19:13,010 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7925925925925926 [2021-06-10 21:19:13,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 535 transitions. [2021-06-10 21:19:13,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 535 transitions. [2021-06-10 21:19:13,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:13,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 535 transitions. [2021-06-10 21:19:13,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,012 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,012 INFO L185 Difference]: Start difference. First operand has 60 places, 60 transitions, 900 flow. Second operand 5 states and 535 transitions. [2021-06-10 21:19:13,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 82 transitions, 1380 flow [2021-06-10 21:19:13,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 1366 flow, removed 7 selfloop flow, removed 0 redundant places. [2021-06-10 21:19:13,022 INFO L241 Difference]: Finished difference. Result has 65 places, 46 transitions, 667 flow [2021-06-10 21:19:13,022 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=667, PETRI_PLACES=65, PETRI_TRANSITIONS=46} [2021-06-10 21:19:13,022 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 32 predicate places. [2021-06-10 21:19:13,023 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 46 transitions, 667 flow [2021-06-10 21:19:13,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,023 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:13,023 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:13,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-10 21:19:13,023 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:13,023 INFO L82 PathProgramCache]: Analyzing trace with hash 243288183, now seen corresponding path program 1 times [2021-06-10 21:19:13,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:13,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439570126] [2021-06-10 21:19:13,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:13,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-10 21:19:13,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,042 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,044 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-10 21:19:13,046 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-10 21:19:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:13,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439570126] [2021-06-10 21:19:13,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:13,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:19:13,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062800840] [2021-06-10 21:19:13,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:19:13,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:13,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:19:13,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:19:13,054 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 135 [2021-06-10 21:19:13,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 46 transitions, 667 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:13,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 135 [2021-06-10 21:19:13,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:13,081 INFO L129 PetriNetUnfolder]: 29/129 cut-off events. [2021-06-10 21:19:13,081 INFO L130 PetriNetUnfolder]: For 1101/1206 co-relation queries the response was YES. [2021-06-10 21:19:13,082 INFO L84 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 129 events. 29/129 cut-off events. For 1101/1206 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 618 event pairs, 2 based on Foata normal form. 18/145 useless extension candidates. Maximal degree in co-relation 839. Up to 57 conditions per place. [2021-06-10 21:19:13,082 INFO L132 encePairwiseOnDemand]: 128/135 looper letters, 14 selfloop transitions, 18 changer transitions 7/51 dead transitions. [2021-06-10 21:19:13,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 51 transitions, 841 flow [2021-06-10 21:19:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:19:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:19:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 425 transitions. [2021-06-10 21:19:13,084 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7870370370370371 [2021-06-10 21:19:13,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 425 transitions. [2021-06-10 21:19:13,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 425 transitions. [2021-06-10 21:19:13,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:13,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 425 transitions. [2021-06-10 21:19:13,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,086 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,086 INFO L185 Difference]: Start difference. First operand has 65 places, 46 transitions, 667 flow. Second operand 4 states and 425 transitions. [2021-06-10 21:19:13,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 51 transitions, 841 flow [2021-06-10 21:19:13,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 51 transitions, 761 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-06-10 21:19:13,092 INFO L241 Difference]: Finished difference. Result has 66 places, 42 transitions, 609 flow [2021-06-10 21:19:13,092 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=609, PETRI_PLACES=66, PETRI_TRANSITIONS=42} [2021-06-10 21:19:13,092 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2021-06-10 21:19:13,092 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 42 transitions, 609 flow [2021-06-10 21:19:13,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,092 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:13,092 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:13,092 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-10 21:19:13,093 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:13,093 INFO L82 PathProgramCache]: Analyzing trace with hash -587472137, now seen corresponding path program 2 times [2021-06-10 21:19:13,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:13,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821325932] [2021-06-10 21:19:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:13,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,130 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,130 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:19:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:13,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821325932] [2021-06-10 21:19:13,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:13,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:19:13,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651360104] [2021-06-10 21:19:13,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:19:13,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:13,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:19:13,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:19:13,138 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 135 [2021-06-10 21:19:13,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 42 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:13,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 135 [2021-06-10 21:19:13,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:13,219 INFO L129 PetriNetUnfolder]: 479/884 cut-off events. [2021-06-10 21:19:13,219 INFO L130 PetriNetUnfolder]: For 4365/4558 co-relation queries the response was YES. [2021-06-10 21:19:13,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 884 events. 479/884 cut-off events. For 4365/4558 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 5619 event pairs, 219 based on Foata normal form. 51/848 useless extension candidates. Maximal degree in co-relation 2546. Up to 597 conditions per place. [2021-06-10 21:19:13,224 INFO L132 encePairwiseOnDemand]: 128/135 looper letters, 10 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2021-06-10 21:19:13,224 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 675 flow [2021-06-10 21:19:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-10 21:19:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-06-10 21:19:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 537 transitions. [2021-06-10 21:19:13,225 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7955555555555556 [2021-06-10 21:19:13,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 537 transitions. [2021-06-10 21:19:13,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 537 transitions. [2021-06-10 21:19:13,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:13,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 537 transitions. [2021-06-10 21:19:13,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.4) internal successors, (537), 5 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,228 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 135.0) internal successors, (810), 6 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,228 INFO L185 Difference]: Start difference. First operand has 66 places, 42 transitions, 609 flow. Second operand 5 states and 537 transitions. [2021-06-10 21:19:13,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 675 flow [2021-06-10 21:19:13,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 605 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-06-10 21:19:13,234 INFO L241 Difference]: Finished difference. Result has 69 places, 51 transitions, 614 flow [2021-06-10 21:19:13,235 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2021-06-10 21:19:13,235 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 36 predicate places. [2021-06-10 21:19:13,235 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 614 flow [2021-06-10 21:19:13,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,235 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:13,235 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:13,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-10 21:19:13,235 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:13,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1274089930, now seen corresponding path program 1 times [2021-06-10 21:19:13,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:13,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992741205] [2021-06-10 21:19:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:13,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:19:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:13,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992741205] [2021-06-10 21:19:13,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:13,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-10 21:19:13,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868221713] [2021-06-10 21:19:13,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-10 21:19:13,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:13,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-10 21:19:13,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-10 21:19:13,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 135 [2021-06-10 21:19:13,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 614 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:13,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 135 [2021-06-10 21:19:13,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:13,371 INFO L129 PetriNetUnfolder]: 440/868 cut-off events. [2021-06-10 21:19:13,371 INFO L130 PetriNetUnfolder]: For 4857/6816 co-relation queries the response was YES. [2021-06-10 21:19:13,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 868 events. 440/868 cut-off events. For 4857/6816 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 5833 event pairs, 62 based on Foata normal form. 236/1034 useless extension candidates. Maximal degree in co-relation 3735. Up to 748 conditions per place. [2021-06-10 21:19:13,376 INFO L132 encePairwiseOnDemand]: 128/135 looper letters, 10 selfloop transitions, 19 changer transitions 0/64 dead transitions. [2021-06-10 21:19:13,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 748 flow [2021-06-10 21:19:13,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-10 21:19:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-06-10 21:19:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 752 transitions. [2021-06-10 21:19:13,378 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7957671957671958 [2021-06-10 21:19:13,378 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 752 transitions. [2021-06-10 21:19:13,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 752 transitions. [2021-06-10 21:19:13,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:13,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 752 transitions. [2021-06-10 21:19:13,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,382 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,382 INFO L185 Difference]: Start difference. First operand has 69 places, 51 transitions, 614 flow. Second operand 7 states and 752 transitions. [2021-06-10 21:19:13,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 748 flow [2021-06-10 21:19:13,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 722 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-06-10 21:19:13,391 INFO L241 Difference]: Finished difference. Result has 76 places, 60 transitions, 722 flow [2021-06-10 21:19:13,391 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=722, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2021-06-10 21:19:13,391 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 43 predicate places. [2021-06-10 21:19:13,392 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 722 flow [2021-06-10 21:19:13,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,392 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:13,392 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:13,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-10 21:19:13,392 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:13,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:13,392 INFO L82 PathProgramCache]: Analyzing trace with hash 366963795, now seen corresponding path program 1 times [2021-06-10 21:19:13,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:13,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139514862] [2021-06-10 21:19:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:13,418 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,422 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,424 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,424 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,427 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,428 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:19:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:13,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139514862] [2021-06-10 21:19:13,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:13,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-10 21:19:13,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61694510] [2021-06-10 21:19:13,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-10 21:19:13,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:13,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-10 21:19:13,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-06-10 21:19:13,435 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 135 [2021-06-10 21:19:13,435 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 722 flow. Second operand has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:13,436 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 135 [2021-06-10 21:19:13,436 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:13,563 INFO L129 PetriNetUnfolder]: 403/821 cut-off events. [2021-06-10 21:19:13,563 INFO L130 PetriNetUnfolder]: For 6356/12661 co-relation queries the response was YES. [2021-06-10 21:19:13,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4802 conditions, 821 events. 403/821 cut-off events. For 6356/12661 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 5615 event pairs, 9 based on Foata normal form. 383/1136 useless extension candidates. Maximal degree in co-relation 4774. Up to 724 conditions per place. [2021-06-10 21:19:13,568 INFO L132 encePairwiseOnDemand]: 128/135 looper letters, 6 selfloop transitions, 28 changer transitions 5/73 dead transitions. [2021-06-10 21:19:13,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 924 flow [2021-06-10 21:19:13,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-10 21:19:13,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-06-10 21:19:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 967 transitions. [2021-06-10 21:19:13,571 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7958847736625514 [2021-06-10 21:19:13,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 967 transitions. [2021-06-10 21:19:13,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 967 transitions. [2021-06-10 21:19:13,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:13,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 967 transitions. [2021-06-10 21:19:13,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 107.44444444444444) internal successors, (967), 9 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,575 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,575 INFO L185 Difference]: Start difference. First operand has 76 places, 60 transitions, 722 flow. Second operand 9 states and 967 transitions. [2021-06-10 21:19:13,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 924 flow [2021-06-10 21:19:13,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 73 transitions, 874 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-06-10 21:19:13,586 INFO L241 Difference]: Finished difference. Result has 84 places, 68 transitions, 842 flow [2021-06-10 21:19:13,586 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=842, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2021-06-10 21:19:13,586 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 51 predicate places. [2021-06-10 21:19:13,586 INFO L480 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 842 flow [2021-06-10 21:19:13,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 103.83333333333333) internal successors, (623), 6 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,586 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:13,587 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:13,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-10 21:19:13,587 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:13,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:13,587 INFO L82 PathProgramCache]: Analyzing trace with hash 385227868, now seen corresponding path program 1 times [2021-06-10 21:19:13,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:13,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036291275] [2021-06-10 21:19:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:13,629 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,629 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,631 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,637 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,637 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,643 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-10 21:19:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:13,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036291275] [2021-06-10 21:19:13,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:13,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-10 21:19:13,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201435246] [2021-06-10 21:19:13,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-10 21:19:13,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:13,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-10 21:19:13,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-10 21:19:13,649 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 135 [2021-06-10 21:19:13,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 842 flow. Second operand has 7 states, 7 states have (on average 103.85714285714286) internal successors, (727), 7 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:13,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 135 [2021-06-10 21:19:13,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:13,781 INFO L129 PetriNetUnfolder]: 348/746 cut-off events. [2021-06-10 21:19:13,781 INFO L130 PetriNetUnfolder]: For 6860/9993 co-relation queries the response was YES. [2021-06-10 21:19:13,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 746 events. 348/746 cut-off events. For 6860/9993 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 5297 event pairs, 3 based on Foata normal form. 357/1035 useless extension candidates. Maximal degree in co-relation 4718. Up to 482 conditions per place. [2021-06-10 21:19:13,786 INFO L132 encePairwiseOnDemand]: 128/135 looper letters, 2 selfloop transitions, 33 changer transitions 18/73 dead transitions. [2021-06-10 21:19:13,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 73 transitions, 976 flow [2021-06-10 21:19:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-10 21:19:13,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-06-10 21:19:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1174 transitions. [2021-06-10 21:19:13,788 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7905723905723906 [2021-06-10 21:19:13,788 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1174 transitions. [2021-06-10 21:19:13,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1174 transitions. [2021-06-10 21:19:13,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:13,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1174 transitions. [2021-06-10 21:19:13,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 106.72727272727273) internal successors, (1174), 11 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 135.0) internal successors, (1620), 12 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,792 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 135.0) internal successors, (1620), 12 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,792 INFO L185 Difference]: Start difference. First operand has 84 places, 68 transitions, 842 flow. Second operand 11 states and 1174 transitions. [2021-06-10 21:19:13,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 73 transitions, 976 flow [2021-06-10 21:19:13,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 73 transitions, 879 flow, removed 34 selfloop flow, removed 4 redundant places. [2021-06-10 21:19:13,828 INFO L241 Difference]: Finished difference. Result has 93 places, 55 transitions, 604 flow [2021-06-10 21:19:13,828 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=604, PETRI_PLACES=93, PETRI_TRANSITIONS=55} [2021-06-10 21:19:13,828 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 60 predicate places. [2021-06-10 21:19:13,828 INFO L480 AbstractCegarLoop]: Abstraction has has 93 places, 55 transitions, 604 flow [2021-06-10 21:19:13,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 103.85714285714286) internal successors, (727), 7 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,829 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-06-10 21:19:13,829 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-10 21:19:13,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-10 21:19:13,829 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-10 21:19:13,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-10 21:19:13,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1033921176, now seen corresponding path program 1 times [2021-06-10 21:19:13,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-10 21:19:13,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022798568] [2021-06-10 21:19:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-10 21:19:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-10 21:19:13,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-10 21:19:13,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-10 21:19:13,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-10 21:19:13,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022798568] [2021-06-10 21:19:13,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-10 21:19:13,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-10 21:19:13,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924298213] [2021-06-10 21:19:13,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-10 21:19:13,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-10 21:19:13,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-10 21:19:13,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-10 21:19:13,859 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 135 [2021-06-10 21:19:13,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 55 transitions, 604 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-06-10 21:19:13,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 135 [2021-06-10 21:19:13,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-06-10 21:19:13,883 INFO L129 PetriNetUnfolder]: 106/252 cut-off events. [2021-06-10 21:19:13,883 INFO L130 PetriNetUnfolder]: For 1123/1193 co-relation queries the response was YES. [2021-06-10 21:19:13,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 252 events. 106/252 cut-off events. For 1123/1193 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 1464 event pairs, 1 based on Foata normal form. 3/237 useless extension candidates. Maximal degree in co-relation 1167. Up to 70 conditions per place. [2021-06-10 21:19:13,885 INFO L132 encePairwiseOnDemand]: 131/135 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2021-06-10 21:19:13,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 54 transitions, 588 flow [2021-06-10 21:19:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-10 21:19:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-06-10 21:19:13,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2021-06-10 21:19:13,886 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8185185185185185 [2021-06-10 21:19:13,886 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2021-06-10 21:19:13,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2021-06-10 21:19:13,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-06-10 21:19:13,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2021-06-10 21:19:13,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,888 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,888 INFO L185 Difference]: Start difference. First operand has 93 places, 55 transitions, 604 flow. Second operand 4 states and 442 transitions. [2021-06-10 21:19:13,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 54 transitions, 588 flow [2021-06-10 21:19:13,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 330 flow, removed 29 selfloop flow, removed 34 redundant places. [2021-06-10 21:19:13,893 INFO L241 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2021-06-10 21:19:13,893 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2021-06-10 21:19:13,893 INFO L343 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2021-06-10 21:19:13,893 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2021-06-10 21:19:13,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-10 21:19:13,893 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-10 21:19:13,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.06 09:19:13 BasicIcfg [2021-06-10 21:19:13,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-10 21:19:13,897 INFO L168 Benchmark]: Toolchain (without parser) took 4999.80 ms. Allocated memory was 369.1 MB in the beginning and 515.9 MB in the end (delta: 146.8 MB). Free memory was 331.0 MB in the beginning and 452.7 MB in the end (delta: -121.7 MB). Peak memory consumption was 26.7 MB. Max. memory is 16.0 GB. [2021-06-10 21:19:13,897 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 369.1 MB. Free memory is still 349.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:19:13,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 382.65 ms. Allocated memory is still 369.1 MB. Free memory was 330.8 MB in the beginning and 329.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:19:13,898 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.42 ms. Allocated memory is still 369.1 MB. Free memory was 329.6 MB in the beginning and 328.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:19:13,898 INFO L168 Benchmark]: Boogie Preprocessor took 13.13 ms. Allocated memory is still 369.1 MB. Free memory was 328.6 MB in the beginning and 326.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-10 21:19:13,898 INFO L168 Benchmark]: RCFGBuilder took 374.55 ms. Allocated memory is still 369.1 MB. Free memory was 326.5 MB in the beginning and 300.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-06-10 21:19:13,899 INFO L168 Benchmark]: TraceAbstraction took 4198.86 ms. Allocated memory was 369.1 MB in the beginning and 515.9 MB in the end (delta: 146.8 MB). Free memory was 300.3 MB in the beginning and 452.7 MB in the end (delta: -152.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-10 21:19:13,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 369.1 MB. Free memory is still 349.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 382.65 ms. Allocated memory is still 369.1 MB. Free memory was 330.8 MB in the beginning and 329.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.42 ms. Allocated memory is still 369.1 MB. Free memory was 329.6 MB in the beginning and 328.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.13 ms. Allocated memory is still 369.1 MB. Free memory was 328.6 MB in the beginning and 326.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 374.55 ms. Allocated memory is still 369.1 MB. Free memory was 326.5 MB in the beginning and 300.3 MB in the end (delta: 26.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4198.86 ms. Allocated memory was 369.1 MB in the beginning and 515.9 MB in the end (delta: 146.8 MB). Free memory was 300.3 MB in the beginning and 452.7 MB in the end (delta: -152.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2160.7ms, 79 PlacesBefore, 33 PlacesAfterwards, 67 TransitionsBefore, 21 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 50 TotalNumberOfCompositions, 2055 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1314, positive: 1235, positive conditional: 0, positive unconditional: 1235, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 839, positive: 806, positive conditional: 0, positive unconditional: 806, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 839, positive: 806, positive conditional: 0, positive unconditional: 806, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 839, positive: 786, positive conditional: 0, positive unconditional: 786, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, positive: 20, positive conditional: 0, positive unconditional: 20, negative: 33, negative conditional: 0, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 181, positive: 70, positive conditional: 0, positive unconditional: 70, negative: 112, negative conditional: 0, negative unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1314, positive: 429, positive conditional: 0, positive unconditional: 429, negative: 46, negative conditional: 0, negative unconditional: 46, unknown: 839, unknown conditional: 0, unknown unconditional: 839] , Statistics on independence cache: Total cache size (in pairs): 1336, Positive cache size: 1303, Positive conditional cache size: 0, Positive unconditional cache size: 1303, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.8ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: SAFE, OverallTime: 4106.1ms, OverallIterations: 14, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1013.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2225.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 89 SDtfs, 61 SDslu, 47 SDs, 0 SdLazy, 246 SolverSat, 95 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 164.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 162.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=900occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.4ms SsaConstructionTime, 162.2ms SatisfiabilityAnalysisTime, 527.6ms InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 821 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...