/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/mix056_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 20:14:26,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 20:14:26,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 20:14:26,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-11 20:14:26,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 20:14:26,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 20:14:26,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 20:14:26,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 20:14:26,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 20:14:26,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 20:14:26,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 20:14:26,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 20:14:26,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 20:14:26,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 20:14:26,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 20:14:26,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 20:14:26,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 20:14:26,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 20:14:26,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 20:14:26,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 20:14:26,151 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 [2021-03-11 20:14:26,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 20:14:26,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 20:14:26,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 20:14:26,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 20:14:26,180 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 20:14:26,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 20:14:26,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 20:14:26,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 20:14:26,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 20:14:26,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 20:14:26,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 20:14:26,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 20:14:26,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 20:14:26,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 20:14:26,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 20:14:26,181 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 20:14:26,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 20:14:26,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 20:14:26,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 20:14:26,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 20:14:26,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 20:14:26,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 20:14:26,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 20:14:26,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 20:14:26,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 20:14:26,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 20:14:26,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 20:14:26,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-11 20:14:26,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 20:14:26,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 20:14:26,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 20:14:26,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 20:14:26,446 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 20:14:26,447 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 20:14:26,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt.i [2021-03-11 20:14:26,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824388ebe/6d860c04e53a4a57acc722b2270763d4/FLAG83e486264 [2021-03-11 20:14:26,979 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 20:14:26,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.opt.i [2021-03-11 20:14:26,991 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824388ebe/6d860c04e53a4a57acc722b2270763d4/FLAG83e486264 [2021-03-11 20:14:27,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/824388ebe/6d860c04e53a4a57acc722b2270763d4 [2021-03-11 20:14:27,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 20:14:27,477 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 20:14:27,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 20:14:27,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 20:14:27,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 20:14:27,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29af99f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27, skipping insertion in model container [2021-03-11 20:14:27,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 20:14:27,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 20:14:27,589 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/mix056_power.opt.i[950,963] [2021-03-11 20:14:27,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:14:27,742 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 20:14:27,749 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/mix056_power.opt.i[950,963] [2021-03-11 20:14:27,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 20:14:27,839 INFO L208 MainTranslator]: Completed translation [2021-03-11 20:14:27,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27 WrapperNode [2021-03-11 20:14:27,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 20:14:27,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 20:14:27,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 20:14:27,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 20:14:27,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 20:14:27,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 20:14:27,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 20:14:27,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 20:14:27,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (1/1) ... [2021-03-11 20:14:27,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 20:14:27,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 20:14:27,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 20:14:27,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 20:14:27,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (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 [2021-03-11 20:14:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 20:14:27,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 20:14:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 20:14:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 20:14:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 20:14:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 20:14:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 20:14:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 20:14:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 20:14:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 20:14:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 20:14:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 20:14:27,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 20:14:27,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 20:14:27,980 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 20:14:29,044 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 20:14:29,044 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-11 20:14:29,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:14:29 BoogieIcfgContainer [2021-03-11 20:14:29,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 20:14:29,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 20:14:29,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 20:14:29,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 20:14:29,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 08:14:27" (1/3) ... [2021-03-11 20:14:29,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228080f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:14:29, skipping insertion in model container [2021-03-11 20:14:29,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 08:14:27" (2/3) ... [2021-03-11 20:14:29,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@228080f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 08:14:29, skipping insertion in model container [2021-03-11 20:14:29,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 08:14:29" (3/3) ... [2021-03-11 20:14:29,051 INFO L111 eAbstractionObserver]: Analyzing ICFG mix056_power.opt.i [2021-03-11 20:14:29,057 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 20:14:29,060 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-11 20:14:29,060 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 20:14:29,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,085 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,085 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,085 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,086 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,087 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,088 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,089 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,090 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,091 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,091 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,091 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,091 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,091 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,091 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,092 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,093 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,096 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,096 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,096 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,096 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,097 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,098 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,098 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,098 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,098 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,099 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,100 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,100 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,100 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,100 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,100 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,100 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,100 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,101 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,101 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 20:14:29,102 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 20:14:29,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-11 20:14:29,129 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 20:14:29,129 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-11 20:14:29,129 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 20:14:29,129 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 20:14:29,129 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 20:14:29,129 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 20:14:29,129 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 20:14:29,129 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 20:14:29,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 207 flow [2021-03-11 20:14:29,158 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-11 20:14:29,159 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:29,161 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-11 20:14:29,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 207 flow [2021-03-11 20:14:29,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 93 transitions, 195 flow [2021-03-11 20:14:29,167 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 20:14:29,173 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-11 20:14:29,175 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-11 20:14:29,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 195 flow [2021-03-11 20:14:29,186 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-11 20:14:29,187 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:29,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-11 20:14:29,188 INFO L116 LiptonReduction]: Number of co-enabled transitions 1578 [2021-03-11 20:14:31,577 WARN L205 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 186 [2021-03-11 20:14:31,852 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-11 20:14:33,052 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 310 DAG size of output: 266 [2021-03-11 20:14:33,583 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-11 20:14:34,764 WARN L205 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 189 [2021-03-11 20:14:35,024 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2021-03-11 20:14:36,358 WARN L205 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 313 DAG size of output: 269 [2021-03-11 20:14:36,941 WARN L205 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2021-03-11 20:14:37,842 WARN L205 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 200 [2021-03-11 20:14:38,136 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2021-03-11 20:14:39,340 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 280 DAG size of output: 279 [2021-03-11 20:14:39,919 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 279 [2021-03-11 20:14:40,220 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2021-03-11 20:14:40,443 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2021-03-11 20:14:40,931 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2021-03-11 20:14:41,050 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-03-11 20:14:41,321 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2021-03-11 20:14:41,469 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-03-11 20:14:41,474 INFO L131 LiptonReduction]: Checked pairs total: 4105 [2021-03-11 20:14:41,474 INFO L133 LiptonReduction]: Total number of compositions: 83 [2021-03-11 20:14:41,475 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 12310 [2021-03-11 20:14:41,491 INFO L129 PetriNetUnfolder]: 0/14 cut-off events. [2021-03-11 20:14:41,491 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:41,491 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:41,492 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:41,492 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:41,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:41,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1712401248, now seen corresponding path program 1 times [2021-03-11 20:14:41,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:41,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137886804] [2021-03-11 20:14:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:41,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:41,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:41,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:41,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137886804] [2021-03-11 20:14:41,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:41,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:14:41,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438032372] [2021-03-11 20:14:41,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:14:41,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:41,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:14:41,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:14:41,712 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 179 [2021-03-11 20:14:41,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2021-03-11 20:14:41,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:41,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 179 [2021-03-11 20:14:41,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:41,780 INFO L129 PetriNetUnfolder]: 23/76 cut-off events. [2021-03-11 20:14:41,780 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:41,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 76 events. 23/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 273 event pairs, 3 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 124. Up to 37 conditions per place. [2021-03-11 20:14:41,784 INFO L132 encePairwiseOnDemand]: 176/179 looper letters, 7 selfloop transitions, 2 changer transitions 2/25 dead transitions. [2021-03-11 20:14:41,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 81 flow [2021-03-11 20:14:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:14:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:14:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2021-03-11 20:14:41,798 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8547486033519553 [2021-03-11 20:14:41,798 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2021-03-11 20:14:41,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2021-03-11 20:14:41,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:41,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2021-03-11 20:14:41,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-03-11 20:14:41,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:41,813 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:41,814 INFO L185 Difference]: Start difference. First operand has 32 places, 22 transitions, 53 flow. Second operand 3 states and 459 transitions. [2021-03-11 20:14:41,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 81 flow [2021-03-11 20:14:41,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 25 transitions, 78 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:14:41,818 INFO L241 Difference]: Finished difference. Result has 30 places, 20 transitions, 50 flow [2021-03-11 20:14:41,820 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2021-03-11 20:14:41,820 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2021-03-11 20:14:41,820 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 50 flow [2021-03-11 20:14:41,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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) [2021-03-11 20:14:41,821 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:41,821 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:41,821 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 20:14:41,821 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:41,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:41,822 INFO L82 PathProgramCache]: Analyzing trace with hash -645057063, now seen corresponding path program 1 times [2021-03-11 20:14:41,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:41,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747431827] [2021-03-11 20:14:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:41,906 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:41,906 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:41,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747431827] [2021-03-11 20:14:41,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:41,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:14:41,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15853095] [2021-03-11 20:14:41,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:14:41,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:41,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:14:41,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:14:41,917 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 179 [2021-03-11 20:14:41,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2021-03-11 20:14:41,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:41,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 179 [2021-03-11 20:14:41,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:41,931 INFO L129 PetriNetUnfolder]: 3/32 cut-off events. [2021-03-11 20:14:41,931 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 20:14:41,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 32 events. 3/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 63 event pairs, 1 based on Foata normal form. 1/31 useless extension candidates. Maximal degree in co-relation 44. Up to 10 conditions per place. [2021-03-11 20:14:41,932 INFO L132 encePairwiseOnDemand]: 175/179 looper letters, 3 selfloop transitions, 3 changer transitions 0/22 dead transitions. [2021-03-11 20:14:41,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 66 flow [2021-03-11 20:14:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:14:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:14:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 460 transitions. [2021-03-11 20:14:41,934 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8566108007448789 [2021-03-11 20:14:41,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 460 transitions. [2021-03-11 20:14:41,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 460 transitions. [2021-03-11 20:14:41,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:41,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 460 transitions. [2021-03-11 20:14:41,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2021-03-11 20:14:41,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:41,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:41,943 INFO L185 Difference]: Start difference. First operand has 30 places, 20 transitions, 50 flow. Second operand 3 states and 460 transitions. [2021-03-11 20:14:41,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 66 flow [2021-03-11 20:14:41,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 62 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:41,944 INFO L241 Difference]: Finished difference. Result has 30 places, 22 transitions, 65 flow [2021-03-11 20:14:41,944 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2021-03-11 20:14:41,945 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, -2 predicate places. [2021-03-11 20:14:41,945 INFO L480 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 65 flow [2021-03-11 20:14:41,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 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) [2021-03-11 20:14:41,945 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:41,945 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:41,945 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 20:14:41,945 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:41,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1478067224, now seen corresponding path program 1 times [2021-03-11 20:14:41,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:41,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570315750] [2021-03-11 20:14:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:42,030 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:42,032 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 20:14:42,046 INFO L142 QuantifierPusher]: treesize reduction 14, result has 48.1 percent of original size [2021-03-11 20:14:42,047 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:14:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:42,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570315750] [2021-03-11 20:14:42,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:42,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-03-11 20:14:42,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463650472] [2021-03-11 20:14:42,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:14:42,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:42,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:14:42,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:14:42,051 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 179 [2021-03-11 20:14:42,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2021-03-11 20:14:42,052 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:42,052 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 179 [2021-03-11 20:14:42,052 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:42,086 INFO L129 PetriNetUnfolder]: 61/142 cut-off events. [2021-03-11 20:14:42,086 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-03-11 20:14:42,087 INFO L84 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 142 events. 61/142 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 596 event pairs, 37 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 275. Up to 97 conditions per place. [2021-03-11 20:14:42,088 INFO L132 encePairwiseOnDemand]: 175/179 looper letters, 7 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2021-03-11 20:14:42,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 91 flow [2021-03-11 20:14:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:14:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:14:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2021-03-11 20:14:42,092 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8026070763500931 [2021-03-11 20:14:42,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2021-03-11 20:14:42,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2021-03-11 20:14:42,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:42,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2021-03-11 20:14:42,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2021-03-11 20:14:42,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:42,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:42,095 INFO L185 Difference]: Start difference. First operand has 30 places, 22 transitions, 65 flow. Second operand 3 states and 431 transitions. [2021-03-11 20:14:42,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 91 flow [2021-03-11 20:14:42,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:14:42,096 INFO L241 Difference]: Finished difference. Result has 32 places, 24 transitions, 81 flow [2021-03-11 20:14:42,096 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2021-03-11 20:14:42,096 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2021-03-11 20:14:42,096 INFO L480 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 81 flow [2021-03-11 20:14:42,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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) [2021-03-11 20:14:42,096 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:42,097 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:42,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 20:14:42,097 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:42,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:42,097 INFO L82 PathProgramCache]: Analyzing trace with hash 370294510, now seen corresponding path program 1 times [2021-03-11 20:14:42,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:42,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288386426] [2021-03-11 20:14:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:42,213 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.3 percent of original size [2021-03-11 20:14:42,216 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 20:14:42,236 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.5 percent of original size [2021-03-11 20:14:42,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-03-11 20:14:42,261 INFO L142 QuantifierPusher]: treesize reduction 26, result has 57.4 percent of original size [2021-03-11 20:14:42,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-03-11 20:14:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:42,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288386426] [2021-03-11 20:14:42,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:42,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:14:42,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207573387] [2021-03-11 20:14:42,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:14:42,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:42,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:14:42,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:14:42,285 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 179 [2021-03-11 20:14:42,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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) [2021-03-11 20:14:42,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:42,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 179 [2021-03-11 20:14:42,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:42,376 INFO L129 PetriNetUnfolder]: 55/136 cut-off events. [2021-03-11 20:14:42,376 INFO L130 PetriNetUnfolder]: For 55/57 co-relation queries the response was YES. [2021-03-11 20:14:42,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 136 events. 55/136 cut-off events. For 55/57 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 582 event pairs, 10 based on Foata normal form. 8/134 useless extension candidates. Maximal degree in co-relation 303. Up to 77 conditions per place. [2021-03-11 20:14:42,379 INFO L132 encePairwiseOnDemand]: 173/179 looper letters, 7 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2021-03-11 20:14:42,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 121 flow [2021-03-11 20:14:42,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:14:42,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:14:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 559 transitions. [2021-03-11 20:14:42,382 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7807262569832403 [2021-03-11 20:14:42,382 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 559 transitions. [2021-03-11 20:14:42,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 559 transitions. [2021-03-11 20:14:42,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:42,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 559 transitions. [2021-03-11 20:14:42,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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) [2021-03-11 20:14:42,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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) [2021-03-11 20:14:42,384 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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) [2021-03-11 20:14:42,385 INFO L185 Difference]: Start difference. First operand has 32 places, 24 transitions, 81 flow. Second operand 4 states and 559 transitions. [2021-03-11 20:14:42,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 121 flow [2021-03-11 20:14:42,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-11 20:14:42,386 INFO L241 Difference]: Finished difference. Result has 36 places, 27 transitions, 118 flow [2021-03-11 20:14:42,386 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2021-03-11 20:14:42,386 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2021-03-11 20:14:42,386 INFO L480 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 118 flow [2021-03-11 20:14:42,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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) [2021-03-11 20:14:42,387 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:42,387 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:42,387 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 20:14:42,387 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:42,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1424558537, now seen corresponding path program 1 times [2021-03-11 20:14:42,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:42,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161933143] [2021-03-11 20:14:42,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:42,469 INFO L142 QuantifierPusher]: treesize reduction 30, result has 38.8 percent of original size [2021-03-11 20:14:42,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 20:14:42,489 INFO L142 QuantifierPusher]: treesize reduction 21, result has 74.1 percent of original size [2021-03-11 20:14:42,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 20:14:42,514 INFO L142 QuantifierPusher]: treesize reduction 21, result has 74.1 percent of original size [2021-03-11 20:14:42,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-03-11 20:14:42,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:42,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161933143] [2021-03-11 20:14:42,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:42,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:14:42,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39696946] [2021-03-11 20:14:42,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:14:42,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:42,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:14:42,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:14:42,537 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 179 [2021-03-11 20:14:42,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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) [2021-03-11 20:14:42,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:42,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 179 [2021-03-11 20:14:42,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:42,585 INFO L129 PetriNetUnfolder]: 49/116 cut-off events. [2021-03-11 20:14:42,585 INFO L130 PetriNetUnfolder]: For 100/110 co-relation queries the response was YES. [2021-03-11 20:14:42,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 116 events. 49/116 cut-off events. For 100/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 435 event pairs, 11 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 353. Up to 81 conditions per place. [2021-03-11 20:14:42,587 INFO L132 encePairwiseOnDemand]: 174/179 looper letters, 11 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2021-03-11 20:14:42,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 164 flow [2021-03-11 20:14:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:14:42,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:14:42,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 558 transitions. [2021-03-11 20:14:42,589 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7793296089385475 [2021-03-11 20:14:42,589 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 558 transitions. [2021-03-11 20:14:42,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 558 transitions. [2021-03-11 20:14:42,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:42,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 558 transitions. [2021-03-11 20:14:42,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 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) [2021-03-11 20:14:42,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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) [2021-03-11 20:14:42,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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) [2021-03-11 20:14:42,592 INFO L185 Difference]: Start difference. First operand has 36 places, 27 transitions, 118 flow. Second operand 4 states and 558 transitions. [2021-03-11 20:14:42,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 164 flow [2021-03-11 20:14:42,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 158 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-03-11 20:14:42,595 INFO L241 Difference]: Finished difference. Result has 39 places, 29 transitions, 137 flow [2021-03-11 20:14:42,595 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2021-03-11 20:14:42,595 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2021-03-11 20:14:42,595 INFO L480 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 137 flow [2021-03-11 20:14:42,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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) [2021-03-11 20:14:42,595 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:42,595 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:42,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 20:14:42,596 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:42,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:42,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1405709203, now seen corresponding path program 1 times [2021-03-11 20:14:42,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:42,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102555778] [2021-03-11 20:14:42,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:42,661 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-03-11 20:14:42,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:14:42,670 INFO L142 QuantifierPusher]: treesize reduction 30, result has 34.8 percent of original size [2021-03-11 20:14:42,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 20:14:42,683 INFO L142 QuantifierPusher]: treesize reduction 42, result has 63.8 percent of original size [2021-03-11 20:14:42,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-03-11 20:14:42,711 INFO L142 QuantifierPusher]: treesize reduction 26, result has 61.8 percent of original size [2021-03-11 20:14:42,713 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-03-11 20:14:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:42,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102555778] [2021-03-11 20:14:42,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:42,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:14:42,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124915407] [2021-03-11 20:14:42,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:14:42,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:42,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:14:42,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:14:42,736 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 179 [2021-03-11 20:14:42,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 137 flow. Second operand has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 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) [2021-03-11 20:14:42,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:42,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 179 [2021-03-11 20:14:42,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:42,807 INFO L129 PetriNetUnfolder]: 55/139 cut-off events. [2021-03-11 20:14:42,808 INFO L130 PetriNetUnfolder]: For 213/223 co-relation queries the response was YES. [2021-03-11 20:14:42,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 139 events. 55/139 cut-off events. For 213/223 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 602 event pairs, 5 based on Foata normal form. 8/139 useless extension candidates. Maximal degree in co-relation 427. Up to 74 conditions per place. [2021-03-11 20:14:42,809 INFO L132 encePairwiseOnDemand]: 172/179 looper letters, 10 selfloop transitions, 9 changer transitions 0/34 dead transitions. [2021-03-11 20:14:42,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 195 flow [2021-03-11 20:14:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 682 transitions. [2021-03-11 20:14:42,811 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7620111731843575 [2021-03-11 20:14:42,811 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 682 transitions. [2021-03-11 20:14:42,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 682 transitions. [2021-03-11 20:14:42,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:42,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 682 transitions. [2021-03-11 20:14:42,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 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) [2021-03-11 20:14:42,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:42,814 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:42,814 INFO L185 Difference]: Start difference. First operand has 39 places, 29 transitions, 137 flow. Second operand 5 states and 682 transitions. [2021-03-11 20:14:42,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 195 flow [2021-03-11 20:14:42,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:42,818 INFO L241 Difference]: Finished difference. Result has 42 places, 31 transitions, 163 flow [2021-03-11 20:14:42,818 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2021-03-11 20:14:42,818 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2021-03-11 20:14:42,818 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 163 flow [2021-03-11 20:14:42,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 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) [2021-03-11 20:14:42,819 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:42,819 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:42,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 20:14:42,819 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:42,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:42,825 INFO L82 PathProgramCache]: Analyzing trace with hash 595570501, now seen corresponding path program 2 times [2021-03-11 20:14:42,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:42,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316492838] [2021-03-11 20:14:42,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:42,878 INFO L142 QuantifierPusher]: treesize reduction 30, result has 34.8 percent of original size [2021-03-11 20:14:42,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-11 20:14:42,887 INFO L142 QuantifierPusher]: treesize reduction 30, result has 38.8 percent of original size [2021-03-11 20:14:42,889 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 20:14:42,900 INFO L142 QuantifierPusher]: treesize reduction 17, result has 71.7 percent of original size [2021-03-11 20:14:42,901 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size 34 [2021-03-11 20:14:42,924 INFO L142 QuantifierPusher]: treesize reduction 17, result has 71.7 percent of original size [2021-03-11 20:14:42,925 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size 34 [2021-03-11 20:14:42,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:42,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316492838] [2021-03-11 20:14:42,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:42,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:14:42,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179728251] [2021-03-11 20:14:42,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:14:42,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:42,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:14:42,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:14:42,948 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 179 [2021-03-11 20:14:42,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 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) [2021-03-11 20:14:42,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:42,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 179 [2021-03-11 20:14:42,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:43,025 INFO L129 PetriNetUnfolder]: 61/155 cut-off events. [2021-03-11 20:14:43,025 INFO L130 PetriNetUnfolder]: For 334/344 co-relation queries the response was YES. [2021-03-11 20:14:43,026 INFO L84 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 155 events. 61/155 cut-off events. For 334/344 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 706 event pairs, 1 based on Foata normal form. 9/157 useless extension candidates. Maximal degree in co-relation 548. Up to 84 conditions per place. [2021-03-11 20:14:43,028 INFO L132 encePairwiseOnDemand]: 172/179 looper letters, 14 selfloop transitions, 10 changer transitions 0/39 dead transitions. [2021-03-11 20:14:43,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 255 flow [2021-03-11 20:14:43,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 681 transitions. [2021-03-11 20:14:43,030 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7608938547486034 [2021-03-11 20:14:43,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 681 transitions. [2021-03-11 20:14:43,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 681 transitions. [2021-03-11 20:14:43,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:43,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 681 transitions. [2021-03-11 20:14:43,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 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) [2021-03-11 20:14:43,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:43,032 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:43,032 INFO L185 Difference]: Start difference. First operand has 42 places, 31 transitions, 163 flow. Second operand 5 states and 681 transitions. [2021-03-11 20:14:43,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 255 flow [2021-03-11 20:14:43,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 234 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-11 20:14:43,035 INFO L241 Difference]: Finished difference. Result has 44 places, 36 transitions, 211 flow [2021-03-11 20:14:43,035 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2021-03-11 20:14:43,035 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2021-03-11 20:14:43,035 INFO L480 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 211 flow [2021-03-11 20:14:43,036 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 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) [2021-03-11 20:14:43,036 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:43,036 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:43,036 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 20:14:43,036 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:43,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:43,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1211643633, now seen corresponding path program 3 times [2021-03-11 20:14:43,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:43,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328102685] [2021-03-11 20:14:43,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:43,084 INFO L142 QuantifierPusher]: treesize reduction 30, result has 25.0 percent of original size [2021-03-11 20:14:43,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-11 20:14:43,092 INFO L142 QuantifierPusher]: treesize reduction 17, result has 70.2 percent of original size [2021-03-11 20:14:43,094 INFO L147 QuantifierPusher]: treesize reduction 9, result has 77.5 percent of original size 31 [2021-03-11 20:14:43,112 INFO L142 QuantifierPusher]: treesize reduction 17, result has 72.1 percent of original size [2021-03-11 20:14:43,114 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-03-11 20:14:43,136 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.4 percent of original size [2021-03-11 20:14:43,136 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.9 percent of original size 38 [2021-03-11 20:14:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:43,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328102685] [2021-03-11 20:14:43,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:43,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:14:43,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647241458] [2021-03-11 20:14:43,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:14:43,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:43,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:14:43,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:14:43,162 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 179 [2021-03-11 20:14:43,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 211 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 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) [2021-03-11 20:14:43,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:43,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 179 [2021-03-11 20:14:43,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:43,238 INFO L129 PetriNetUnfolder]: 65/167 cut-off events. [2021-03-11 20:14:43,238 INFO L130 PetriNetUnfolder]: For 499/509 co-relation queries the response was YES. [2021-03-11 20:14:43,239 INFO L84 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 167 events. 65/167 cut-off events. For 499/509 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 784 event pairs, 3 based on Foata normal form. 5/164 useless extension candidates. Maximal degree in co-relation 680. Up to 95 conditions per place. [2021-03-11 20:14:43,240 INFO L132 encePairwiseOnDemand]: 172/179 looper letters, 17 selfloop transitions, 9 changer transitions 0/41 dead transitions. [2021-03-11 20:14:43,240 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 299 flow [2021-03-11 20:14:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 694 transitions. [2021-03-11 20:14:43,242 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7754189944134078 [2021-03-11 20:14:43,242 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 694 transitions. [2021-03-11 20:14:43,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 694 transitions. [2021-03-11 20:14:43,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:43,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 694 transitions. [2021-03-11 20:14:43,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.8) internal successors, (694), 5 states have internal predecessors, (694), 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) [2021-03-11 20:14:43,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:43,245 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:43,245 INFO L185 Difference]: Start difference. First operand has 44 places, 36 transitions, 211 flow. Second operand 5 states and 694 transitions. [2021-03-11 20:14:43,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 299 flow [2021-03-11 20:14:43,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 279 flow, removed 5 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:43,247 INFO L241 Difference]: Finished difference. Result has 47 places, 39 transitions, 244 flow [2021-03-11 20:14:43,247 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2021-03-11 20:14:43,247 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2021-03-11 20:14:43,247 INFO L480 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 244 flow [2021-03-11 20:14:43,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 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) [2021-03-11 20:14:43,248 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:43,248 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:43,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 20:14:43,248 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:43,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:43,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1886807983, now seen corresponding path program 4 times [2021-03-11 20:14:43,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:43,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520783676] [2021-03-11 20:14:43,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:43,323 INFO L142 QuantifierPusher]: treesize reduction 30, result has 30.2 percent of original size [2021-03-11 20:14:43,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:14:43,333 INFO L142 QuantifierPusher]: treesize reduction 40, result has 56.0 percent of original size [2021-03-11 20:14:43,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-11 20:14:43,349 INFO L142 QuantifierPusher]: treesize reduction 40, result has 57.4 percent of original size [2021-03-11 20:14:43,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-03-11 20:14:43,373 INFO L142 QuantifierPusher]: treesize reduction 21, result has 75.3 percent of original size [2021-03-11 20:14:43,374 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 64 [2021-03-11 20:14:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:43,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520783676] [2021-03-11 20:14:43,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:43,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:14:43,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038623001] [2021-03-11 20:14:43,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 20:14:43,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:43,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 20:14:43,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-03-11 20:14:43,398 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 179 [2021-03-11 20:14:43,399 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 244 flow. Second operand has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 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) [2021-03-11 20:14:43,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:43,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 179 [2021-03-11 20:14:43,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:43,480 INFO L129 PetriNetUnfolder]: 60/162 cut-off events. [2021-03-11 20:14:43,480 INFO L130 PetriNetUnfolder]: For 593/603 co-relation queries the response was YES. [2021-03-11 20:14:43,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 162 events. 60/162 cut-off events. For 593/603 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 782 event pairs, 3 based on Foata normal form. 5/159 useless extension candidates. Maximal degree in co-relation 704. Up to 87 conditions per place. [2021-03-11 20:14:43,482 INFO L132 encePairwiseOnDemand]: 173/179 looper letters, 18 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2021-03-11 20:14:43,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 338 flow [2021-03-11 20:14:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 679 transitions. [2021-03-11 20:14:43,485 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.758659217877095 [2021-03-11 20:14:43,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 679 transitions. [2021-03-11 20:14:43,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 679 transitions. [2021-03-11 20:14:43,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:43,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 679 transitions. [2021-03-11 20:14:43,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.8) internal successors, (679), 5 states have internal predecessors, (679), 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) [2021-03-11 20:14:43,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:43,488 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:43,488 INFO L185 Difference]: Start difference. First operand has 47 places, 39 transitions, 244 flow. Second operand 5 states and 679 transitions. [2021-03-11 20:14:43,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 338 flow [2021-03-11 20:14:43,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 315 flow, removed 9 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:43,491 INFO L241 Difference]: Finished difference. Result has 50 places, 41 transitions, 273 flow [2021-03-11 20:14:43,491 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2021-03-11 20:14:43,492 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2021-03-11 20:14:43,492 INFO L480 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 273 flow [2021-03-11 20:14:43,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 133.83333333333334) internal successors, (803), 6 states have internal predecessors, (803), 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) [2021-03-11 20:14:43,493 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:43,493 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:43,493 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 20:14:43,493 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:43,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:43,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1198070972, now seen corresponding path program 1 times [2021-03-11 20:14:43,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:43,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153106741] [2021-03-11 20:14:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:43,560 INFO L142 QuantifierPusher]: treesize reduction 12, result has 73.3 percent of original size [2021-03-11 20:14:43,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-03-11 20:14:43,579 INFO L142 QuantifierPusher]: treesize reduction 12, result has 75.0 percent of original size [2021-03-11 20:14:43,580 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-03-11 20:14:43,602 INFO L142 QuantifierPusher]: treesize reduction 12, result has 75.5 percent of original size [2021-03-11 20:14:43,603 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 20:14:43,629 INFO L142 QuantifierPusher]: treesize reduction 12, result has 75.5 percent of original size [2021-03-11 20:14:43,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-03-11 20:14:43,667 INFO L142 QuantifierPusher]: treesize reduction 28, result has 62.7 percent of original size [2021-03-11 20:14:43,668 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.9 percent of original size 38 [2021-03-11 20:14:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:43,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153106741] [2021-03-11 20:14:43,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:43,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:14:43,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695659433] [2021-03-11 20:14:43,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:14:43,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:43,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:14:43,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:14:43,697 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 179 [2021-03-11 20:14:43,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 136.85714285714286) internal successors, (958), 7 states have internal predecessors, (958), 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) [2021-03-11 20:14:43,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:43,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 179 [2021-03-11 20:14:43,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:43,788 INFO L129 PetriNetUnfolder]: 60/166 cut-off events. [2021-03-11 20:14:43,788 INFO L130 PetriNetUnfolder]: For 761/771 co-relation queries the response was YES. [2021-03-11 20:14:43,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 166 events. 60/166 cut-off events. For 761/771 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 811 event pairs, 3 based on Foata normal form. 8/166 useless extension candidates. Maximal degree in co-relation 753. Up to 81 conditions per place. [2021-03-11 20:14:43,789 INFO L132 encePairwiseOnDemand]: 172/179 looper letters, 14 selfloop transitions, 19 changer transitions 0/48 dead transitions. [2021-03-11 20:14:43,789 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 405 flow [2021-03-11 20:14:43,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:43,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2021-03-11 20:14:43,791 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7798882681564245 [2021-03-11 20:14:43,791 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2021-03-11 20:14:43,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2021-03-11 20:14:43,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:43,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2021-03-11 20:14:43,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 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) [2021-03-11 20:14:43,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:43,794 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:43,794 INFO L185 Difference]: Start difference. First operand has 50 places, 41 transitions, 273 flow. Second operand 5 states and 698 transitions. [2021-03-11 20:14:43,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 405 flow [2021-03-11 20:14:43,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 372 flow, removed 9 selfloop flow, removed 3 redundant places. [2021-03-11 20:14:43,797 INFO L241 Difference]: Finished difference. Result has 52 places, 44 transitions, 335 flow [2021-03-11 20:14:43,797 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2021-03-11 20:14:43,797 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2021-03-11 20:14:43,797 INFO L480 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 335 flow [2021-03-11 20:14:43,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 136.85714285714286) internal successors, (958), 7 states have internal predecessors, (958), 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) [2021-03-11 20:14:43,797 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:43,797 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:43,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-11 20:14:43,797 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:43,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:43,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1094068256, now seen corresponding path program 2 times [2021-03-11 20:14:43,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:43,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193508004] [2021-03-11 20:14:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:43,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:43,839 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 20:14:43,846 INFO L142 QuantifierPusher]: treesize reduction 31, result has 58.1 percent of original size [2021-03-11 20:14:43,848 INFO L147 QuantifierPusher]: treesize reduction 9, result has 79.1 percent of original size 34 [2021-03-11 20:14:43,868 INFO L142 QuantifierPusher]: treesize reduction 31, result has 59.7 percent of original size [2021-03-11 20:14:43,869 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.4 percent of original size 37 [2021-03-11 20:14:43,893 INFO L142 QuantifierPusher]: treesize reduction 28, result has 65.9 percent of original size [2021-03-11 20:14:43,894 INFO L147 QuantifierPusher]: treesize reduction 9, result has 83.3 percent of original size 45 [2021-03-11 20:14:43,923 INFO L142 QuantifierPusher]: treesize reduction 28, result has 62.7 percent of original size [2021-03-11 20:14:43,924 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.9 percent of original size 38 [2021-03-11 20:14:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:43,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193508004] [2021-03-11 20:14:43,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:43,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:14:43,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256565077] [2021-03-11 20:14:43,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:14:43,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:43,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:14:43,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:14:43,953 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 179 [2021-03-11 20:14:43,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 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) [2021-03-11 20:14:43,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:43,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 179 [2021-03-11 20:14:43,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:44,047 INFO L129 PetriNetUnfolder]: 62/176 cut-off events. [2021-03-11 20:14:44,047 INFO L130 PetriNetUnfolder]: For 810/820 co-relation queries the response was YES. [2021-03-11 20:14:44,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 176 events. 62/176 cut-off events. For 810/820 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 911 event pairs, 3 based on Foata normal form. 8/176 useless extension candidates. Maximal degree in co-relation 868. Up to 96 conditions per place. [2021-03-11 20:14:44,049 INFO L132 encePairwiseOnDemand]: 172/179 looper letters, 24 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2021-03-11 20:14:44,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 449 flow [2021-03-11 20:14:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 687 transitions. [2021-03-11 20:14:44,051 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7675977653631285 [2021-03-11 20:14:44,051 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 687 transitions. [2021-03-11 20:14:44,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 687 transitions. [2021-03-11 20:14:44,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:44,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 687 transitions. [2021-03-11 20:14:44,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 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) [2021-03-11 20:14:44,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:44,054 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:44,054 INFO L185 Difference]: Start difference. First operand has 52 places, 44 transitions, 335 flow. Second operand 5 states and 687 transitions. [2021-03-11 20:14:44,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 449 flow [2021-03-11 20:14:44,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 426 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-11 20:14:44,057 INFO L241 Difference]: Finished difference. Result has 54 places, 45 transitions, 354 flow [2021-03-11 20:14:44,057 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2021-03-11 20:14:44,057 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2021-03-11 20:14:44,057 INFO L480 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 354 flow [2021-03-11 20:14:44,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 134.85714285714286) internal successors, (944), 7 states have internal predecessors, (944), 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) [2021-03-11 20:14:44,057 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:44,058 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:44,058 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-11 20:14:44,058 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:44,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:44,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1282814432, now seen corresponding path program 3 times [2021-03-11 20:14:44,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:44,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989425219] [2021-03-11 20:14:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:44,105 INFO L142 QuantifierPusher]: treesize reduction 30, result has 38.8 percent of original size [2021-03-11 20:14:44,105 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-11 20:14:44,115 INFO L142 QuantifierPusher]: treesize reduction 30, result has 42.3 percent of original size [2021-03-11 20:14:44,116 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-11 20:14:44,129 INFO L142 QuantifierPusher]: treesize reduction 17, result has 74.6 percent of original size [2021-03-11 20:14:44,130 INFO L147 QuantifierPusher]: treesize reduction 9, result has 82.0 percent of original size 41 [2021-03-11 20:14:44,157 INFO L142 QuantifierPusher]: treesize reduction 17, result has 75.7 percent of original size [2021-03-11 20:14:44,158 INFO L147 QuantifierPusher]: treesize reduction 9, result has 83.0 percent of original size 44 [2021-03-11 20:14:44,190 INFO L142 QuantifierPusher]: treesize reduction 17, result has 73.4 percent of original size [2021-03-11 20:14:44,193 INFO L147 QuantifierPusher]: treesize reduction 9, result has 80.9 percent of original size 38 [2021-03-11 20:14:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:44,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989425219] [2021-03-11 20:14:44,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:44,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 20:14:44,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815740017] [2021-03-11 20:14:44,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-11 20:14:44,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:44,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-11 20:14:44,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-11 20:14:44,227 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 179 [2021-03-11 20:14:44,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 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) [2021-03-11 20:14:44,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:44,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 179 [2021-03-11 20:14:44,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:44,358 INFO L129 PetriNetUnfolder]: 59/173 cut-off events. [2021-03-11 20:14:44,358 INFO L130 PetriNetUnfolder]: For 909/919 co-relation queries the response was YES. [2021-03-11 20:14:44,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 173 events. 59/173 cut-off events. For 909/919 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 892 event pairs, 1 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 847. Up to 65 conditions per place. [2021-03-11 20:14:44,360 INFO L132 encePairwiseOnDemand]: 173/179 looper letters, 19 selfloop transitions, 17 changer transitions 0/51 dead transitions. [2021-03-11 20:14:44,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 51 transitions, 478 flow [2021-03-11 20:14:44,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:44,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 667 transitions. [2021-03-11 20:14:44,362 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.7452513966480447 [2021-03-11 20:14:44,362 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 667 transitions. [2021-03-11 20:14:44,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 667 transitions. [2021-03-11 20:14:44,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:44,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 667 transitions. [2021-03-11 20:14:44,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 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) [2021-03-11 20:14:44,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:44,364 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:44,364 INFO L185 Difference]: Start difference. First operand has 54 places, 45 transitions, 354 flow. Second operand 5 states and 667 transitions. [2021-03-11 20:14:44,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 51 transitions, 478 flow [2021-03-11 20:14:44,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 456 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-03-11 20:14:44,367 INFO L241 Difference]: Finished difference. Result has 57 places, 47 transitions, 408 flow [2021-03-11 20:14:44,367 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=408, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2021-03-11 20:14:44,367 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2021-03-11 20:14:44,367 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 408 flow [2021-03-11 20:14:44,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 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) [2021-03-11 20:14:44,368 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:44,368 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:44,368 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-11 20:14:44,368 INFO L428 AbstractCegarLoop]: === Iteration 13 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:44,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:44,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1092420792, now seen corresponding path program 1 times [2021-03-11 20:14:44,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:44,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909461822] [2021-03-11 20:14:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:44,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,404 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:44,407 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:14:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:44,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909461822] [2021-03-11 20:14:44,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:44,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:14:44,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664815051] [2021-03-11 20:14:44,408 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:14:44,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:44,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:14:44,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:14:44,410 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 179 [2021-03-11 20:14:44,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2021-03-11 20:14:44,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:44,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 179 [2021-03-11 20:14:44,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:44,446 INFO L129 PetriNetUnfolder]: 96/259 cut-off events. [2021-03-11 20:14:44,446 INFO L130 PetriNetUnfolder]: For 1477/1495 co-relation queries the response was YES. [2021-03-11 20:14:44,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1197 conditions, 259 events. 96/259 cut-off events. For 1477/1495 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1457 event pairs, 21 based on Foata normal form. 8/247 useless extension candidates. Maximal degree in co-relation 1172. Up to 97 conditions per place. [2021-03-11 20:14:44,448 INFO L132 encePairwiseOnDemand]: 174/179 looper letters, 4 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2021-03-11 20:14:44,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 430 flow [2021-03-11 20:14:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:14:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:14:44,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2021-03-11 20:14:44,449 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8435754189944135 [2021-03-11 20:14:44,449 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2021-03-11 20:14:44,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2021-03-11 20:14:44,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:44,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2021-03-11 20:14:44,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 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) [2021-03-11 20:14:44,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:44,451 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:44,451 INFO L185 Difference]: Start difference. First operand has 57 places, 47 transitions, 408 flow. Second operand 3 states and 453 transitions. [2021-03-11 20:14:44,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 50 transitions, 430 flow [2021-03-11 20:14:44,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 50 transitions, 401 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:44,454 INFO L241 Difference]: Finished difference. Result has 58 places, 50 transitions, 405 flow [2021-03-11 20:14:44,454 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=405, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2021-03-11 20:14:44,455 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2021-03-11 20:14:44,455 INFO L480 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 405 flow [2021-03-11 20:14:44,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2021-03-11 20:14:44,455 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:44,455 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:44,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-11 20:14:44,456 INFO L428 AbstractCegarLoop]: === Iteration 14 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:44,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:44,456 INFO L82 PathProgramCache]: Analyzing trace with hash 898503466, now seen corresponding path program 1 times [2021-03-11 20:14:44,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:44,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321489984] [2021-03-11 20:14:44,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:44,485 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:44,487 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,488 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:44,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,492 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:14:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:44,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321489984] [2021-03-11 20:14:44,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:44,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:14:44,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637974860] [2021-03-11 20:14:44,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:14:44,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:44,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:14:44,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:14:44,494 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 179 [2021-03-11 20:14:44,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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) [2021-03-11 20:14:44,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:44,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 179 [2021-03-11 20:14:44,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:44,536 INFO L129 PetriNetUnfolder]: 35/126 cut-off events. [2021-03-11 20:14:44,536 INFO L130 PetriNetUnfolder]: For 572/608 co-relation queries the response was YES. [2021-03-11 20:14:44,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 126 events. 35/126 cut-off events. For 572/608 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 514 event pairs, 2 based on Foata normal form. 31/152 useless extension candidates. Maximal degree in co-relation 568. Up to 44 conditions per place. [2021-03-11 20:14:44,537 INFO L132 encePairwiseOnDemand]: 174/179 looper letters, 4 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2021-03-11 20:14:44,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 384 flow [2021-03-11 20:14:44,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:14:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:14:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 604 transitions. [2021-03-11 20:14:44,538 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8435754189944135 [2021-03-11 20:14:44,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 604 transitions. [2021-03-11 20:14:44,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 604 transitions. [2021-03-11 20:14:44,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:44,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 604 transitions. [2021-03-11 20:14:44,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 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) [2021-03-11 20:14:44,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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) [2021-03-11 20:14:44,541 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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) [2021-03-11 20:14:44,541 INFO L185 Difference]: Start difference. First operand has 58 places, 50 transitions, 405 flow. Second operand 4 states and 604 transitions. [2021-03-11 20:14:44,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 384 flow [2021-03-11 20:14:44,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 47 transitions, 370 flow, removed 5 selfloop flow, removed 1 redundant places. [2021-03-11 20:14:44,544 INFO L241 Difference]: Finished difference. Result has 61 places, 47 transitions, 376 flow [2021-03-11 20:14:44,544 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=61, PETRI_TRANSITIONS=47} [2021-03-11 20:14:44,544 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2021-03-11 20:14:44,544 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 47 transitions, 376 flow [2021-03-11 20:14:44,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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) [2021-03-11 20:14:44,545 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:44,545 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:44,545 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-11 20:14:44,545 INFO L428 AbstractCegarLoop]: === Iteration 15 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:44,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:44,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1519942642, now seen corresponding path program 1 times [2021-03-11 20:14:44,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:44,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503782686] [2021-03-11 20:14:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:44,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:14:44,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:44,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:44,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503782686] [2021-03-11 20:14:44,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:44,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 20:14:44,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391508807] [2021-03-11 20:14:44,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 20:14:44,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:44,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 20:14:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 20:14:44,577 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 179 [2021-03-11 20:14:44,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 47 transitions, 376 flow. Second operand has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2021-03-11 20:14:44,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:44,577 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 179 [2021-03-11 20:14:44,577 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:44,609 INFO L129 PetriNetUnfolder]: 73/222 cut-off events. [2021-03-11 20:14:44,609 INFO L130 PetriNetUnfolder]: For 976/1018 co-relation queries the response was YES. [2021-03-11 20:14:44,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 222 events. 73/222 cut-off events. For 976/1018 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1165 event pairs, 4 based on Foata normal form. 25/237 useless extension candidates. Maximal degree in co-relation 949. Up to 93 conditions per place. [2021-03-11 20:14:44,611 INFO L132 encePairwiseOnDemand]: 176/179 looper letters, 4 selfloop transitions, 1 changer transitions 3/49 dead transitions. [2021-03-11 20:14:44,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 49 transitions, 412 flow [2021-03-11 20:14:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-03-11 20:14:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-03-11 20:14:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 591 transitions. [2021-03-11 20:14:44,613 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8254189944134078 [2021-03-11 20:14:44,613 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 591 transitions. [2021-03-11 20:14:44,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 591 transitions. [2021-03-11 20:14:44,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:44,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 591 transitions. [2021-03-11 20:14:44,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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) [2021-03-11 20:14:44,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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) [2021-03-11 20:14:44,616 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 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) [2021-03-11 20:14:44,616 INFO L185 Difference]: Start difference. First operand has 61 places, 47 transitions, 376 flow. Second operand 4 states and 591 transitions. [2021-03-11 20:14:44,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 49 transitions, 412 flow [2021-03-11 20:14:44,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 49 transitions, 398 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-03-11 20:14:44,619 INFO L241 Difference]: Finished difference. Result has 64 places, 45 transitions, 350 flow [2021-03-11 20:14:44,619 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=350, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2021-03-11 20:14:44,619 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2021-03-11 20:14:44,619 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 350 flow [2021-03-11 20:14:44,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 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) [2021-03-11 20:14:44,619 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:44,619 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:44,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-11 20:14:44,619 INFO L428 AbstractCegarLoop]: === Iteration 16 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:44,620 INFO L82 PathProgramCache]: Analyzing trace with hash 326224812, now seen corresponding path program 2 times [2021-03-11 20:14:44,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:44,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984486098] [2021-03-11 20:14:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:44,640 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:14:44,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:44,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984486098] [2021-03-11 20:14:44,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:44,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 20:14:44,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179187314] [2021-03-11 20:14:44,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-11 20:14:44,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:44,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-11 20:14:44,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-11 20:14:44,646 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 179 [2021-03-11 20:14:44,647 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2021-03-11 20:14:44,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:44,647 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 179 [2021-03-11 20:14:44,647 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:44,671 INFO L129 PetriNetUnfolder]: 47/185 cut-off events. [2021-03-11 20:14:44,671 INFO L130 PetriNetUnfolder]: For 815/842 co-relation queries the response was YES. [2021-03-11 20:14:44,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 185 events. 47/185 cut-off events. For 815/842 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 986 event pairs, 3 based on Foata normal form. 24/205 useless extension candidates. Maximal degree in co-relation 703. Up to 71 conditions per place. [2021-03-11 20:14:44,672 INFO L132 encePairwiseOnDemand]: 176/179 looper letters, 3 selfloop transitions, 3 changer transitions 2/45 dead transitions. [2021-03-11 20:14:44,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 45 transitions, 362 flow [2021-03-11 20:14:44,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-11 20:14:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-11 20:14:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 459 transitions. [2021-03-11 20:14:44,674 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8547486033519553 [2021-03-11 20:14:44,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 459 transitions. [2021-03-11 20:14:44,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 459 transitions. [2021-03-11 20:14:44,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:44,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 459 transitions. [2021-03-11 20:14:44,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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) [2021-03-11 20:14:44,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:44,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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) [2021-03-11 20:14:44,677 INFO L185 Difference]: Start difference. First operand has 64 places, 45 transitions, 350 flow. Second operand 3 states and 459 transitions. [2021-03-11 20:14:44,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 45 transitions, 362 flow [2021-03-11 20:14:44,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 45 transitions, 346 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-03-11 20:14:44,679 INFO L241 Difference]: Finished difference. Result has 61 places, 43 transitions, 328 flow [2021-03-11 20:14:44,680 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2021-03-11 20:14:44,680 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2021-03-11 20:14:44,680 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 328 flow [2021-03-11 20:14:44,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 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) [2021-03-11 20:14:44,680 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:44,680 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:44,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-11 20:14:44,680 INFO L428 AbstractCegarLoop]: === Iteration 17 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:44,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:44,681 INFO L82 PathProgramCache]: Analyzing trace with hash 32944903, now seen corresponding path program 1 times [2021-03-11 20:14:44,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:44,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127181003] [2021-03-11 20:14:44,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 20:14:44,719 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:44,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:44,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 20:14:44,729 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 20:14:44,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 20:14:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 20:14:44,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127181003] [2021-03-11 20:14:44,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 20:14:44,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 20:14:44,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118745650] [2021-03-11 20:14:44,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 20:14:44,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 20:14:44,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 20:14:44,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-03-11 20:14:44,731 INFO L500 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 179 [2021-03-11 20:14:44,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 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) [2021-03-11 20:14:44,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-11 20:14:44,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 179 [2021-03-11 20:14:44,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-11 20:14:44,759 INFO L129 PetriNetUnfolder]: 29/118 cut-off events. [2021-03-11 20:14:44,759 INFO L130 PetriNetUnfolder]: For 302/359 co-relation queries the response was YES. [2021-03-11 20:14:44,759 INFO L84 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 118 events. 29/118 cut-off events. For 302/359 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 553 event pairs, 0 based on Foata normal form. 69/184 useless extension candidates. Maximal degree in co-relation 442. Up to 45 conditions per place. [2021-03-11 20:14:44,760 INFO L132 encePairwiseOnDemand]: 174/179 looper letters, 1 selfloop transitions, 10 changer transitions 10/41 dead transitions. [2021-03-11 20:14:44,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 41 transitions, 337 flow [2021-03-11 20:14:44,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 20:14:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-11 20:14:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2021-03-11 20:14:44,762 INFO L545 CegarLoopForPetriNet]: DFA transition density 0.8402234636871508 [2021-03-11 20:14:44,762 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2021-03-11 20:14:44,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2021-03-11 20:14:44,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-11 20:14:44,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2021-03-11 20:14:44,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 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) [2021-03-11 20:14:44,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:44,765 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 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) [2021-03-11 20:14:44,765 INFO L185 Difference]: Start difference. First operand has 61 places, 43 transitions, 328 flow. Second operand 5 states and 752 transitions. [2021-03-11 20:14:44,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 41 transitions, 337 flow [2021-03-11 20:14:44,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 41 transitions, 278 flow, removed 17 selfloop flow, removed 5 redundant places. [2021-03-11 20:14:44,766 INFO L241 Difference]: Finished difference. Result has 61 places, 31 transitions, 204 flow [2021-03-11 20:14:44,767 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=61, PETRI_TRANSITIONS=31} [2021-03-11 20:14:44,767 INFO L335 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2021-03-11 20:14:44,767 INFO L480 AbstractCegarLoop]: Abstraction has has 61 places, 31 transitions, 204 flow [2021-03-11 20:14:44,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 148.8) internal successors, (744), 5 states have internal predecessors, (744), 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) [2021-03-11 20:14:44,767 INFO L247 CegarLoopForPetriNet]: Found error trace [2021-03-11 20:14:44,767 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 20:14:44,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-11 20:14:44,768 INFO L428 AbstractCegarLoop]: === Iteration 18 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 20:14:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 20:14:44,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1923855316, now seen corresponding path program 1 times [2021-03-11 20:14:44,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 20:14:44,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384513816] [2021-03-11 20:14:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 20:14:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:14:44,807 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:14:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-11 20:14:44,833 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-11 20:14:44,867 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-11 20:14:44,868 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-03-11 20:14:44,868 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-11 20:14:44,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 08:14:44 BasicIcfg [2021-03-11 20:14:44,930 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 20:14:44,931 INFO L168 Benchmark]: Toolchain (without parser) took 17456.10 ms. Allocated memory was 255.9 MB in the beginning and 614.5 MB in the end (delta: 358.6 MB). Free memory was 234.2 MB in the beginning and 451.6 MB in the end (delta: -217.4 MB). Peak memory consumption was 140.5 MB. Max. memory is 16.0 GB. [2021-03-11 20:14:44,931 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 157.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 20:14:44,931 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.62 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.6 MB in the beginning and 314.3 MB in the end (delta: -80.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 20:14:44,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.01 ms. Allocated memory is still 354.4 MB. Free memory was 314.3 MB in the beginning and 311.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-11 20:14:44,932 INFO L168 Benchmark]: Boogie Preprocessor took 32.73 ms. Allocated memory is still 354.4 MB. Free memory was 311.5 MB in the beginning and 309.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 20:14:44,932 INFO L168 Benchmark]: RCFGBuilder took 1117.86 ms. Allocated memory is still 354.4 MB. Free memory was 309.4 MB in the beginning and 241.9 MB in the end (delta: 67.6 MB). Peak memory consumption was 71.4 MB. Max. memory is 16.0 GB. [2021-03-11 20:14:44,932 INFO L168 Benchmark]: TraceAbstraction took 15883.62 ms. Allocated memory was 354.4 MB in the beginning and 614.5 MB in the end (delta: 260.0 MB). Free memory was 241.9 MB in the beginning and 451.6 MB in the end (delta: -209.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.0 GB. [2021-03-11 20:14:44,933 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 255.9 MB. Free memory was 237.7 MB in the beginning and 237.5 MB in the end (delta: 157.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 361.62 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 233.6 MB in the beginning and 314.3 MB in the end (delta: -80.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.01 ms. Allocated memory is still 354.4 MB. Free memory was 314.3 MB in the beginning and 311.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.73 ms. Allocated memory is still 354.4 MB. Free memory was 311.5 MB in the beginning and 309.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1117.86 ms. Allocated memory is still 354.4 MB. Free memory was 309.4 MB in the beginning and 241.9 MB in the end (delta: 67.6 MB). Peak memory consumption was 71.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 15883.62 ms. Allocated memory was 354.4 MB in the beginning and 614.5 MB in the end (delta: 260.0 MB). Free memory was 241.9 MB in the beginning and 451.6 MB in the end (delta: -209.7 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 12299.2ms, 101 PlacesBefore, 32 PlacesAfterwards, 93 TransitionsBefore, 22 TransitionsAfterwards, 1578 CoEnabledTransitionPairs, 7 FixpointIterations, 35 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 TotalNumberOfCompositions, 4105 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2111, positive: 1955, positive conditional: 0, positive unconditional: 1955, negative: 156, negative conditional: 0, negative unconditional: 156, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1135, positive: 1074, positive conditional: 0, positive unconditional: 1074, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1135, positive: 1063, positive conditional: 0, positive unconditional: 1063, negative: 72, negative conditional: 0, negative unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 72, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 61, negative conditional: 0, negative unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 927, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 904, negative conditional: 0, negative unconditional: 904, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2111, positive: 881, positive conditional: 0, positive unconditional: 881, negative: 95, negative conditional: 0, negative unconditional: 95, unknown: 1135, unknown conditional: 0, unknown unconditional: 1135] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 91, Positive conditional cache size: 0, Positive unconditional cache size: 91, Negative cache size: 22, Negative conditional cache size: 0, Negative unconditional cache size: 22 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; [L718] 0 _Bool y$flush_delayed; [L719] 0 int y$mem_tmp; [L720] 0 _Bool y$r_buff0_thd0; [L721] 0 _Bool y$r_buff0_thd1; [L722] 0 _Bool y$r_buff0_thd2; [L723] 0 _Bool y$r_buff0_thd3; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$r_buff1_thd3; [L728] 0 _Bool y$read_delayed; [L729] 0 int *y$read_delayed_var; [L730] 0 int y$w_buff0; [L731] 0 _Bool y$w_buff0_used; [L732] 0 int y$w_buff1; [L733] 0 _Bool y$w_buff1_used; [L735] 0 int z = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L813] 0 pthread_t t1492; [L814] FCALL, FORK 0 pthread_create(&t1492, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t1493; [L816] FCALL, FORK 0 pthread_create(&t1493, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L817] 0 pthread_t t1494; [L818] FCALL, FORK 0 pthread_create(&t1494, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L776] 3 y$w_buff1 = y$w_buff0 [L777] 3 y$w_buff0 = 2 [L778] 3 y$w_buff1_used = y$w_buff0_used [L779] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L781] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L782] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L783] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L784] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L785] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L788] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L741] 1 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L744] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L756] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L759] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L762] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L762] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L763] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L763] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L764] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L764] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L765] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L765] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L766] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L766] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L791] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L791] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L792] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L792] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L793] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L794] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L794] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L795] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L795] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L749] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L751] 1 return 0; [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L771] 2 return 0; [L798] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L800] 3 return 0; [L820] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L824] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L824] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L825] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L825] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L826] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L827] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L827] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L828] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L828] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L831] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L832] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L833] 0 y$flush_delayed = weak$$choice2 [L834] 0 y$mem_tmp = y [L835] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L835] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L836] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L836] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L837] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L837] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L838] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L838] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L839] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L840] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L841] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L842] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0) [L843] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L843] 0 y = y$flush_delayed ? y$mem_tmp : y [L844] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=50, weak$$choice2=255, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 95 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 9.7ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 15741.9ms, OverallIterations: 18, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1258.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12351.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 63 SDtfs, 15 SDslu, 14 SDs, 0 SdLazy, 356 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 417.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 811.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=408occurred in iteration=12, InterpolantAutomatonStates: 71, 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: 41.7ms SsaConstructionTime, 409.5ms SatisfiabilityAnalysisTime, 1402.3ms InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 1968 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...