/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/safe031_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 19:57:39,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 19:57:39,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 19:57:39,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 19:57:39,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 19:57:39,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 19:57:39,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 19:57:39,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 19:57:39,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 19:57:39,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 19:57:39,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 19:57:39,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 19:57:39,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 19:57:39,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 19:57:39,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 19:57:39,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 19:57:39,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 19:57:39,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 19:57:39,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 19:57:39,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 19:57:39,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 19:57:39,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 19:57:39,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 19:57:39,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 19:57:39,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 19:57:39,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 19:57:39,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 19:57:39,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 19:57:39,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 19:57:39,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 19:57:39,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 19:57:39,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 19:57:39,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 19:57:39,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 19:57:39,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 19:57:39,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 19:57:39,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 19:57:39,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 19:57:39,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 19:57:39,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 19:57:39,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 19:57:39,463 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 [2021-03-24 19:57:39,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 19:57:39,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 19:57:39,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 19:57:39,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 19:57:39,491 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 19:57:39,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 19:57:39,491 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 19:57:39,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 19:57:39,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 19:57:39,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 19:57:39,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 19:57:39,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 19:57:39,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 19:57:39,492 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 19:57:39,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 19:57:39,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 19:57:39,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 19:57:39,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 19:57:39,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 19:57:39,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 19:57:39,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 19:57:39,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 19:57:39,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 19:57:39,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 19:57:39,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 19:57:39,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 19:57:39,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 19:57:39,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 19:57:39,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 19:57:39,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 19:57:39,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 19:57:39,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 19:57:39,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 19:57:39,774 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 19:57:39,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_rmo.opt.i [2021-03-24 19:57:39,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4b678ed/c8b71fa7cb3840658c3f882942b24e9d/FLAGe618d3da7 [2021-03-24 19:57:40,243 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 19:57:40,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_rmo.opt.i [2021-03-24 19:57:40,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4b678ed/c8b71fa7cb3840658c3f882942b24e9d/FLAGe618d3da7 [2021-03-24 19:57:40,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a4b678ed/c8b71fa7cb3840658c3f882942b24e9d [2021-03-24 19:57:40,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 19:57:40,274 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 19:57:40,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 19:57:40,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 19:57:40,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 19:57:40,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d74cb92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40, skipping insertion in model container [2021-03-24 19:57:40,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 19:57:40,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 19:57:40,480 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/safe031_rmo.opt.i[949,962] [2021-03-24 19:57:40,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:57:40,651 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 19:57:40,661 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/safe031_rmo.opt.i[949,962] [2021-03-24 19:57:40,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 19:57:40,741 INFO L208 MainTranslator]: Completed translation [2021-03-24 19:57:40,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40 WrapperNode [2021-03-24 19:57:40,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 19:57:40,742 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 19:57:40,742 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 19:57:40,742 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 19:57:40,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 19:57:40,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 19:57:40,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 19:57:40,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 19:57:40,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,795 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (1/1) ... [2021-03-24 19:57:40,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 19:57:40,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 19:57:40,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 19:57:40,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 19:57:40,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (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 [2021-03-24 19:57:40,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 19:57:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 19:57:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 19:57:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 19:57:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 19:57:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 19:57:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 19:57:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 19:57:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 19:57:40,877 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 19:57:40,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 19:57:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 19:57:40,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 19:57:40,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 19:57:40,879 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-24 19:57:41,973 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 19:57:41,974 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 19:57:41,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:57:41 BoogieIcfgContainer [2021-03-24 19:57:41,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 19:57:41,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 19:57:41,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 19:57:41,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 19:57:41,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 07:57:40" (1/3) ... [2021-03-24 19:57:41,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a4923d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:57:41, skipping insertion in model container [2021-03-24 19:57:41,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 07:57:40" (2/3) ... [2021-03-24 19:57:41,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a4923d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 07:57:41, skipping insertion in model container [2021-03-24 19:57:41,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 07:57:41" (3/3) ... [2021-03-24 19:57:41,979 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_rmo.opt.i [2021-03-24 19:57:41,983 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 19:57:41,986 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 19:57:41,986 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 19:57:42,006 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,006 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,006 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,007 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,008 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,009 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,010 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,011 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,012 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,013 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,016 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,016 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,016 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,017 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,018 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,020 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,020 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,021 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,021 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,022 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 19:57:42,025 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 19:57:42,038 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 19:57:42,059 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 19:57:42,060 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 19:57:42,060 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 19:57:42,060 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 19:57:42,060 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 19:57:42,064 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 19:57:42,064 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 19:57:42,064 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 19:57:42,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 207 flow [2021-03-24 19:57:42,114 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-24 19:57:42,114 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:42,119 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 64 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. [2021-03-24 19:57:42,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 207 flow [2021-03-24 19:57:42,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 93 transitions, 195 flow [2021-03-24 19:57:42,123 INFO L165 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-24 19:57:42,130 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-24 19:57:42,131 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-24 19:57:42,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 195 flow [2021-03-24 19:57:42,155 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-24 19:57:42,156 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:42,156 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 70 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. [2021-03-24 19:57:42,158 INFO L142 LiptonReduction]: Number of co-enabled transitions 1578 [2021-03-24 19:57:43,185 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 19:57:43,529 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 81 [2021-03-24 19:57:43,633 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-03-24 19:57:44,241 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 186 [2021-03-24 19:57:44,500 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-24 19:57:45,704 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 310 DAG size of output: 265 [2021-03-24 19:57:46,262 WARN L205 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 262 [2021-03-24 19:57:47,696 WARN L205 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 185 [2021-03-24 19:57:47,953 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2021-03-24 19:57:48,489 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-24 19:57:49,162 WARN L205 SmtUtils]: Spent 670.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-24 19:57:49,362 INFO L154 LiptonReduction]: Checked pairs total: 2611 [2021-03-24 19:57:49,362 INFO L156 LiptonReduction]: Total number of compositions: 66 [2021-03-24 19:57:49,370 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7248 [2021-03-24 19:57:49,389 INFO L129 PetriNetUnfolder]: 0/23 cut-off events. [2021-03-24 19:57:49,389 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:49,389 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:49,390 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:49,390 INFO L428 AbstractCegarLoop]: === Iteration 1 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:49,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:49,393 INFO L82 PathProgramCache]: Analyzing trace with hash -2045016767, now seen corresponding path program 1 times [2021-03-24 19:57:49,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:49,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265048575] [2021-03-24 19:57:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:49,652 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:49,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:49,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265048575] [2021-03-24 19:57:49,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:49,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 19:57:49,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581950039] [2021-03-24 19:57:49,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 19:57:49,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:49,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 19:57:49,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 19:57:49,679 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 162 [2021-03-24 19:57:49,680 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2021-03-24 19:57:49,680 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:49,680 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 162 [2021-03-24 19:57:49,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:49,757 INFO L129 PetriNetUnfolder]: 23/92 cut-off events. [2021-03-24 19:57:49,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:49,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 92 events. 23/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 307 event pairs, 9 based on Foata normal form. 6/91 useless extension candidates. Maximal degree in co-relation 131. Up to 37 conditions per place. [2021-03-24 19:57:49,758 INFO L132 encePairwiseOnDemand]: 158/162 looper letters, 7 selfloop transitions, 2 changer transitions 4/38 dead transitions. [2021-03-24 19:57:49,758 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 38 transitions, 107 flow [2021-03-24 19:57:49,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 19:57:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 19:57:49,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2021-03-24 19:57:49,792 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8868312757201646 [2021-03-24 19:57:49,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2021-03-24 19:57:49,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2021-03-24 19:57:49,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:49,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2021-03-24 19:57:49,798 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) [2021-03-24 19:57:49,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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) [2021-03-24 19:57:49,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 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) [2021-03-24 19:57:49,804 INFO L185 Difference]: Start difference. First operand has 46 places, 37 transitions, 83 flow. Second operand 3 states and 431 transitions. [2021-03-24 19:57:49,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 38 transitions, 107 flow [2021-03-24 19:57:49,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 104 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 19:57:49,813 INFO L241 Difference]: Finished difference. Result has 43 places, 31 transitions, 72 flow [2021-03-24 19:57:49,814 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2021-03-24 19:57:49,815 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2021-03-24 19:57:49,815 INFO L480 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 72 flow [2021-03-24 19:57:49,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 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) [2021-03-24 19:57:49,815 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:49,815 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:49,816 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 19:57:49,816 INFO L428 AbstractCegarLoop]: === Iteration 2 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:49,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:49,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1019057741, now seen corresponding path program 1 times [2021-03-24 19:57:49,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:49,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317891463] [2021-03-24 19:57:49,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:49,940 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:49,941 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:49,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:49,948 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:49,948 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:49,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317891463] [2021-03-24 19:57:49,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:49,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:57:49,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448097117] [2021-03-24 19:57:49,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:57:49,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:49,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:57:49,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:57:49,958 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 162 [2021-03-24 19:57:49,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 72 flow. Second operand has 4 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) [2021-03-24 19:57:49,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:49,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 162 [2021-03-24 19:57:49,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:49,989 INFO L129 PetriNetUnfolder]: 6/56 cut-off events. [2021-03-24 19:57:49,989 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 19:57:49,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 56 events. 6/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 121 event pairs, 2 based on Foata normal form. 4/58 useless extension candidates. Maximal degree in co-relation 69. Up to 15 conditions per place. [2021-03-24 19:57:49,991 INFO L132 encePairwiseOnDemand]: 157/162 looper letters, 4 selfloop transitions, 3 changer transitions 5/38 dead transitions. [2021-03-24 19:57:49,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 110 flow [2021-03-24 19:57:49,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:49,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 709 transitions. [2021-03-24 19:57:49,995 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8753086419753087 [2021-03-24 19:57:49,998 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 709 transitions. [2021-03-24 19:57:49,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 709 transitions. [2021-03-24 19:57:49,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:49,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 709 transitions. [2021-03-24 19:57:50,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 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) [2021-03-24 19:57:50,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2021-03-24 19:57:50,004 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2021-03-24 19:57:50,005 INFO L185 Difference]: Start difference. First operand has 43 places, 31 transitions, 72 flow. Second operand 5 states and 709 transitions. [2021-03-24 19:57:50,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 110 flow [2021-03-24 19:57:50,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-03-24 19:57:50,006 INFO L241 Difference]: Finished difference. Result has 45 places, 33 transitions, 95 flow [2021-03-24 19:57:50,006 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=45, PETRI_TRANSITIONS=33} [2021-03-24 19:57:50,006 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2021-03-24 19:57:50,006 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 95 flow [2021-03-24 19:57:50,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 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) [2021-03-24 19:57:50,006 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:50,007 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:50,007 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 19:57:50,008 INFO L428 AbstractCegarLoop]: === Iteration 3 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:50,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:50,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1010579815, now seen corresponding path program 1 times [2021-03-24 19:57:50,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:50,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075999533] [2021-03-24 19:57:50,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:50,132 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:50,133 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,133 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:50,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:50,147 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 19:57:50,163 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,164 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:50,167 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:50,168 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:50,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075999533] [2021-03-24 19:57:50,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:50,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:57:50,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211627759] [2021-03-24 19:57:50,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:57:50,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:50,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:57:50,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:57:50,174 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2021-03-24 19:57:50,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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) [2021-03-24 19:57:50,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:50,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2021-03-24 19:57:50,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:50,267 INFO L129 PetriNetUnfolder]: 93/211 cut-off events. [2021-03-24 19:57:50,268 INFO L130 PetriNetUnfolder]: For 99/99 co-relation queries the response was YES. [2021-03-24 19:57:50,269 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 211 events. 93/211 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 827 event pairs, 44 based on Foata normal form. 10/217 useless extension candidates. Maximal degree in co-relation 471. Up to 121 conditions per place. [2021-03-24 19:57:50,271 INFO L132 encePairwiseOnDemand]: 153/162 looper letters, 8 selfloop transitions, 9 changer transitions 9/49 dead transitions. [2021-03-24 19:57:50,271 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 183 flow [2021-03-24 19:57:50,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:50,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1045 transitions. [2021-03-24 19:57:50,273 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8063271604938271 [2021-03-24 19:57:50,273 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1045 transitions. [2021-03-24 19:57:50,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1045 transitions. [2021-03-24 19:57:50,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:50,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1045 transitions. [2021-03-24 19:57:50,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.625) internal successors, (1045), 8 states have internal predecessors, (1045), 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) [2021-03-24 19:57:50,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 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) [2021-03-24 19:57:50,278 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 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) [2021-03-24 19:57:50,278 INFO L185 Difference]: Start difference. First operand has 45 places, 33 transitions, 95 flow. Second operand 8 states and 1045 transitions. [2021-03-24 19:57:50,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 183 flow [2021-03-24 19:57:50,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 178 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 19:57:50,281 INFO L241 Difference]: Finished difference. Result has 53 places, 39 transitions, 154 flow [2021-03-24 19:57:50,281 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=154, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2021-03-24 19:57:50,281 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2021-03-24 19:57:50,282 INFO L480 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 154 flow [2021-03-24 19:57:50,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 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) [2021-03-24 19:57:50,283 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:50,283 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:50,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 19:57:50,283 INFO L428 AbstractCegarLoop]: === Iteration 4 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:50,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:50,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1310362469, now seen corresponding path program 1 times [2021-03-24 19:57:50,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:50,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486921590] [2021-03-24 19:57:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:50,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,384 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:50,384 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,385 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:50,387 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:50,391 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,392 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:50,402 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-24 19:57:50,403 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-24 19:57:50,416 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,417 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:50,417 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:50,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:50,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486921590] [2021-03-24 19:57:50,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:50,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:57:50,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116761269] [2021-03-24 19:57:50,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:57:50,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:50,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:57:50,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:57:50,423 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 162 [2021-03-24 19:57:50,424 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 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) [2021-03-24 19:57:50,424 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:50,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 162 [2021-03-24 19:57:50,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:50,512 INFO L129 PetriNetUnfolder]: 77/203 cut-off events. [2021-03-24 19:57:50,513 INFO L130 PetriNetUnfolder]: For 395/395 co-relation queries the response was YES. [2021-03-24 19:57:50,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 629 conditions, 203 events. 77/203 cut-off events. For 395/395 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 894 event pairs, 37 based on Foata normal form. 15/208 useless extension candidates. Maximal degree in co-relation 597. Up to 102 conditions per place. [2021-03-24 19:57:50,515 INFO L132 encePairwiseOnDemand]: 153/162 looper letters, 9 selfloop transitions, 10 changer transitions 7/48 dead transitions. [2021-03-24 19:57:50,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 48 transitions, 250 flow [2021-03-24 19:57:50,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:57:50,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:57:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1141 transitions. [2021-03-24 19:57:50,518 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7825788751714677 [2021-03-24 19:57:50,518 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1141 transitions. [2021-03-24 19:57:50,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1141 transitions. [2021-03-24 19:57:50,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:50,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1141 transitions. [2021-03-24 19:57:50,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.77777777777777) internal successors, (1141), 9 states have internal predecessors, (1141), 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) [2021-03-24 19:57:50,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,523 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:50,523 INFO L185 Difference]: Start difference. First operand has 53 places, 39 transitions, 154 flow. Second operand 9 states and 1141 transitions. [2021-03-24 19:57:50,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 48 transitions, 250 flow [2021-03-24 19:57:50,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 246 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 19:57:50,527 INFO L241 Difference]: Finished difference. Result has 59 places, 40 transitions, 192 flow [2021-03-24 19:57:50,527 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=48, 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=9, PETRI_FLOW=192, PETRI_PLACES=59, PETRI_TRANSITIONS=40} [2021-03-24 19:57:50,527 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2021-03-24 19:57:50,527 INFO L480 AbstractCegarLoop]: Abstraction has has 59 places, 40 transitions, 192 flow [2021-03-24 19:57:50,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 125.14285714285714) internal successors, (876), 7 states have internal predecessors, (876), 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) [2021-03-24 19:57:50,528 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:50,528 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:50,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 19:57:50,528 INFO L428 AbstractCegarLoop]: === Iteration 5 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:50,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:50,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1247938106, now seen corresponding path program 1 times [2021-03-24 19:57:50,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:50,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140626188] [2021-03-24 19:57:50,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:50,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:50,592 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:50,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:50,598 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:50,605 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:50,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:50,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140626188] [2021-03-24 19:57:50,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:50,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:57:50,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671552852] [2021-03-24 19:57:50,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:57:50,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:50,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:57:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:57:50,612 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 162 [2021-03-24 19:57:50,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 40 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 128.16666666666666) internal successors, (769), 6 states have internal predecessors, (769), 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) [2021-03-24 19:57:50,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:50,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 162 [2021-03-24 19:57:50,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:50,684 INFO L129 PetriNetUnfolder]: 73/184 cut-off events. [2021-03-24 19:57:50,684 INFO L130 PetriNetUnfolder]: For 596/599 co-relation queries the response was YES. [2021-03-24 19:57:50,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 184 events. 73/184 cut-off events. For 596/599 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 722 event pairs, 27 based on Foata normal form. 11/189 useless extension candidates. Maximal degree in co-relation 651. Up to 95 conditions per place. [2021-03-24 19:57:50,686 INFO L132 encePairwiseOnDemand]: 154/162 looper letters, 16 selfloop transitions, 8 changer transitions 5/52 dead transitions. [2021-03-24 19:57:50,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 320 flow [2021-03-24 19:57:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:57:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:57:50,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 914 transitions. [2021-03-24 19:57:50,688 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8059964726631393 [2021-03-24 19:57:50,688 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 914 transitions. [2021-03-24 19:57:50,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 914 transitions. [2021-03-24 19:57:50,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:50,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 914 transitions. [2021-03-24 19:57:50,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.57142857142858) internal successors, (914), 7 states have internal predecessors, (914), 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) [2021-03-24 19:57:50,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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) [2021-03-24 19:57:50,691 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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) [2021-03-24 19:57:50,691 INFO L185 Difference]: Start difference. First operand has 59 places, 40 transitions, 192 flow. Second operand 7 states and 914 transitions. [2021-03-24 19:57:50,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 320 flow [2021-03-24 19:57:50,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 299 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-03-24 19:57:50,696 INFO L241 Difference]: Finished difference. Result has 60 places, 43 transitions, 215 flow [2021-03-24 19:57:50,697 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2021-03-24 19:57:50,697 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2021-03-24 19:57:50,697 INFO L480 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 215 flow [2021-03-24 19:57:50,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 128.16666666666666) internal successors, (769), 6 states have internal predecessors, (769), 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) [2021-03-24 19:57:50,697 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:50,697 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:50,697 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 19:57:50,697 INFO L428 AbstractCegarLoop]: === Iteration 6 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:50,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:50,698 INFO L82 PathProgramCache]: Analyzing trace with hash -859002622, now seen corresponding path program 2 times [2021-03-24 19:57:50,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:50,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993077350] [2021-03-24 19:57:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:50,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:50,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:50,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:50,765 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,766 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:50,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:50,777 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:50,777 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:50,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993077350] [2021-03-24 19:57:50,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:50,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:57:50,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733814793] [2021-03-24 19:57:50,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 19:57:50,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:50,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 19:57:50,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 19:57:50,783 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2021-03-24 19:57:50,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 215 flow. Second operand has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2021-03-24 19:57:50,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:50,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2021-03-24 19:57:50,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:50,867 INFO L129 PetriNetUnfolder]: 69/178 cut-off events. [2021-03-24 19:57:50,867 INFO L130 PetriNetUnfolder]: For 737/741 co-relation queries the response was YES. [2021-03-24 19:57:50,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 178 events. 69/178 cut-off events. For 737/741 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 692 event pairs, 27 based on Foata normal form. 10/182 useless extension candidates. Maximal degree in co-relation 691. Up to 93 conditions per place. [2021-03-24 19:57:50,868 INFO L132 encePairwiseOnDemand]: 155/162 looper letters, 16 selfloop transitions, 9 changer transitions 6/54 dead transitions. [2021-03-24 19:57:50,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 54 transitions, 367 flow [2021-03-24 19:57:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1050 transitions. [2021-03-24 19:57:50,871 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8101851851851852 [2021-03-24 19:57:50,871 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1050 transitions. [2021-03-24 19:57:50,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1050 transitions. [2021-03-24 19:57:50,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:50,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1050 transitions. [2021-03-24 19:57:50,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.25) internal successors, (1050), 8 states have internal predecessors, (1050), 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) [2021-03-24 19:57:50,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 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) [2021-03-24 19:57:50,874 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 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) [2021-03-24 19:57:50,874 INFO L185 Difference]: Start difference. First operand has 60 places, 43 transitions, 215 flow. Second operand 8 states and 1050 transitions. [2021-03-24 19:57:50,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 54 transitions, 367 flow [2021-03-24 19:57:50,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 336 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-03-24 19:57:50,877 INFO L241 Difference]: Finished difference. Result has 64 places, 45 transitions, 241 flow [2021-03-24 19:57:50,877 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2021-03-24 19:57:50,878 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2021-03-24 19:57:50,878 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 241 flow [2021-03-24 19:57:50,878 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2021-03-24 19:57:50,878 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:50,878 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:50,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 19:57:50,878 INFO L428 AbstractCegarLoop]: === Iteration 7 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1897568002, now seen corresponding path program 1 times [2021-03-24 19:57:50,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:50,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228185096] [2021-03-24 19:57:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:50,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,923 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:50,924 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:50,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:50,926 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:50,926 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:50,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228185096] [2021-03-24 19:57:50,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:50,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 19:57:50,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105942564] [2021-03-24 19:57:50,929 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:57:50,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:50,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:57:50,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:57:50,930 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 162 [2021-03-24 19:57:50,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2021-03-24 19:57:50,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:50,930 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 162 [2021-03-24 19:57:50,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,009 INFO L129 PetriNetUnfolder]: 48/193 cut-off events. [2021-03-24 19:57:51,009 INFO L130 PetriNetUnfolder]: For 939/960 co-relation queries the response was YES. [2021-03-24 19:57:51,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 193 events. 48/193 cut-off events. For 939/960 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 971 event pairs, 18 based on Foata normal form. 16/207 useless extension candidates. Maximal degree in co-relation 685. Up to 58 conditions per place. [2021-03-24 19:57:51,010 INFO L132 encePairwiseOnDemand]: 158/162 looper letters, 5 selfloop transitions, 3 changer transitions 2/48 dead transitions. [2021-03-24 19:57:51,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 48 transitions, 295 flow [2021-03-24 19:57:51,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:51,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:51,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 706 transitions. [2021-03-24 19:57:51,012 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8716049382716049 [2021-03-24 19:57:51,012 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 706 transitions. [2021-03-24 19:57:51,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 706 transitions. [2021-03-24 19:57:51,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 706 transitions. [2021-03-24 19:57:51,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.2) internal successors, (706), 5 states have internal predecessors, (706), 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) [2021-03-24 19:57:51,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2021-03-24 19:57:51,014 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2021-03-24 19:57:51,015 INFO L185 Difference]: Start difference. First operand has 64 places, 45 transitions, 241 flow. Second operand 5 states and 706 transitions. [2021-03-24 19:57:51,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 48 transitions, 295 flow [2021-03-24 19:57:51,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 48 transitions, 272 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-03-24 19:57:51,019 INFO L241 Difference]: Finished difference. Result has 64 places, 45 transitions, 239 flow [2021-03-24 19:57:51,019 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=57, 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=5, PETRI_FLOW=239, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2021-03-24 19:57:51,019 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2021-03-24 19:57:51,019 INFO L480 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 239 flow [2021-03-24 19:57:51,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2021-03-24 19:57:51,019 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,020 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:51,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 19:57:51,020 INFO L428 AbstractCegarLoop]: === Iteration 8 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,020 INFO L82 PathProgramCache]: Analyzing trace with hash -698498999, now seen corresponding path program 1 times [2021-03-24 19:57:51,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798737749] [2021-03-24 19:57:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,075 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,077 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,079 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,080 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:51,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:51,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:51,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 19:57:51,104 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:51,111 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:51,111 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798737749] [2021-03-24 19:57:51,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 19:57:51,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625349509] [2021-03-24 19:57:51,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 19:57:51,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 19:57:51,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-03-24 19:57:51,117 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 162 [2021-03-24 19:57:51,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 126.125) internal successors, (1009), 8 states have internal predecessors, (1009), 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) [2021-03-24 19:57:51,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 162 [2021-03-24 19:57:51,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,175 INFO L129 PetriNetUnfolder]: 45/166 cut-off events. [2021-03-24 19:57:51,175 INFO L130 PetriNetUnfolder]: For 720/733 co-relation queries the response was YES. [2021-03-24 19:57:51,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 674 conditions, 166 events. 45/166 cut-off events. For 720/733 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 740 event pairs, 8 based on Foata normal form. 11/175 useless extension candidates. Maximal degree in co-relation 634. Up to 82 conditions per place. [2021-03-24 19:57:51,176 INFO L132 encePairwiseOnDemand]: 155/162 looper letters, 17 selfloop transitions, 8 changer transitions 3/50 dead transitions. [2021-03-24 19:57:51,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 50 transitions, 339 flow [2021-03-24 19:57:51,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 19:57:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 19:57:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1021 transitions. [2021-03-24 19:57:51,178 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7878086419753086 [2021-03-24 19:57:51,178 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1021 transitions. [2021-03-24 19:57:51,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1021 transitions. [2021-03-24 19:57:51,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1021 transitions. [2021-03-24 19:57:51,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 127.625) internal successors, (1021), 8 states have internal predecessors, (1021), 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) [2021-03-24 19:57:51,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 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) [2021-03-24 19:57:51,183 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 162.0) internal successors, (1458), 9 states have internal predecessors, (1458), 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) [2021-03-24 19:57:51,183 INFO L185 Difference]: Start difference. First operand has 64 places, 45 transitions, 239 flow. Second operand 8 states and 1021 transitions. [2021-03-24 19:57:51,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 50 transitions, 339 flow [2021-03-24 19:57:51,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 50 transitions, 326 flow, removed 5 selfloop flow, removed 3 redundant places. [2021-03-24 19:57:51,186 INFO L241 Difference]: Finished difference. Result has 69 places, 45 transitions, 254 flow [2021-03-24 19:57:51,186 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=254, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2021-03-24 19:57:51,186 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2021-03-24 19:57:51,186 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 254 flow [2021-03-24 19:57:51,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 126.125) internal successors, (1009), 8 states have internal predecessors, (1009), 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) [2021-03-24 19:57:51,187 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,187 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:51,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 19:57:51,187 INFO L428 AbstractCegarLoop]: === Iteration 9 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,187 INFO L82 PathProgramCache]: Analyzing trace with hash 31353396, now seen corresponding path program 1 times [2021-03-24 19:57:51,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847670090] [2021-03-24 19:57:51,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,244 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,244 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,245 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,247 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-03-24 19:57:51,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 19:57:51,266 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:51,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847670090] [2021-03-24 19:57:51,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:57:51,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441015880] [2021-03-24 19:57:51,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:57:51,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:57:51,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:57:51,271 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 162 [2021-03-24 19:57:51,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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) [2021-03-24 19:57:51,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 162 [2021-03-24 19:57:51,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,355 INFO L129 PetriNetUnfolder]: 60/196 cut-off events. [2021-03-24 19:57:51,355 INFO L130 PetriNetUnfolder]: For 1060/1078 co-relation queries the response was YES. [2021-03-24 19:57:51,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 196 events. 60/196 cut-off events. For 1060/1078 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 925 event pairs, 14 based on Foata normal form. 15/207 useless extension candidates. Maximal degree in co-relation 803. Up to 97 conditions per place. [2021-03-24 19:57:51,357 INFO L132 encePairwiseOnDemand]: 154/162 looper letters, 16 selfloop transitions, 14 changer transitions 5/58 dead transitions. [2021-03-24 19:57:51,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 58 transitions, 450 flow [2021-03-24 19:57:51,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:57:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:57:51,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 936 transitions. [2021-03-24 19:57:51,359 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8253968253968254 [2021-03-24 19:57:51,359 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 936 transitions. [2021-03-24 19:57:51,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 936 transitions. [2021-03-24 19:57:51,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 936 transitions. [2021-03-24 19:57:51,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.71428571428572) internal successors, (936), 7 states have internal predecessors, (936), 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) [2021-03-24 19:57:51,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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) [2021-03-24 19:57:51,362 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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) [2021-03-24 19:57:51,362 INFO L185 Difference]: Start difference. First operand has 69 places, 45 transitions, 254 flow. Second operand 7 states and 936 transitions. [2021-03-24 19:57:51,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 58 transitions, 450 flow [2021-03-24 19:57:51,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 58 transitions, 424 flow, removed 7 selfloop flow, removed 7 redundant places. [2021-03-24 19:57:51,365 INFO L241 Difference]: Finished difference. Result has 70 places, 51 transitions, 346 flow [2021-03-24 19:57:51,365 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=346, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2021-03-24 19:57:51,366 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 24 predicate places. [2021-03-24 19:57:51,366 INFO L480 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 346 flow [2021-03-24 19:57:51,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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) [2021-03-24 19:57:51,366 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,366 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:51,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 19:57:51,366 INFO L428 AbstractCegarLoop]: === Iteration 10 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,366 INFO L82 PathProgramCache]: Analyzing trace with hash 373435028, now seen corresponding path program 2 times [2021-03-24 19:57:51,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460931944] [2021-03-24 19:57:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,402 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,402 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,404 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,407 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,409 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,409 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:51,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:51,421 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,421 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 19:57:51,429 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,430 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-03-24 19:57:51,439 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,439 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 19:57:51,449 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:51,449 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460931944] [2021-03-24 19:57:51,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 19:57:51,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205227905] [2021-03-24 19:57:51,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 19:57:51,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 19:57:51,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-03-24 19:57:51,457 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 162 [2021-03-24 19:57:51,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 346 flow. Second operand has 9 states, 9 states have (on average 122.11111111111111) internal successors, (1099), 9 states have internal predecessors, (1099), 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) [2021-03-24 19:57:51,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 162 [2021-03-24 19:57:51,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,593 INFO L129 PetriNetUnfolder]: 67/219 cut-off events. [2021-03-24 19:57:51,593 INFO L130 PetriNetUnfolder]: For 1436/1469 co-relation queries the response was YES. [2021-03-24 19:57:51,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1068 conditions, 219 events. 67/219 cut-off events. For 1436/1469 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1097 event pairs, 6 based on Foata normal form. 33/246 useless extension candidates. Maximal degree in co-relation 1024. Up to 95 conditions per place. [2021-03-24 19:57:51,594 INFO L132 encePairwiseOnDemand]: 152/162 looper letters, 15 selfloop transitions, 21 changer transitions 5/62 dead transitions. [2021-03-24 19:57:51,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 62 transitions, 546 flow [2021-03-24 19:57:51,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 19:57:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 19:57:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1366 transitions. [2021-03-24 19:57:51,597 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7665544332210998 [2021-03-24 19:57:51,597 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1366 transitions. [2021-03-24 19:57:51,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1366 transitions. [2021-03-24 19:57:51,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1366 transitions. [2021-03-24 19:57:51,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 124.18181818181819) internal successors, (1366), 11 states have internal predecessors, (1366), 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) [2021-03-24 19:57:51,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 162.0) internal successors, (1944), 12 states have internal predecessors, (1944), 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) [2021-03-24 19:57:51,602 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 162.0) internal successors, (1944), 12 states have internal predecessors, (1944), 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) [2021-03-24 19:57:51,602 INFO L185 Difference]: Start difference. First operand has 70 places, 51 transitions, 346 flow. Second operand 11 states and 1366 transitions. [2021-03-24 19:57:51,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 62 transitions, 546 flow [2021-03-24 19:57:51,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 62 transitions, 517 flow, removed 14 selfloop flow, removed 3 redundant places. [2021-03-24 19:57:51,605 INFO L241 Difference]: Finished difference. Result has 78 places, 53 transitions, 404 flow [2021-03-24 19:57:51,606 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=404, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2021-03-24 19:57:51,606 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 32 predicate places. [2021-03-24 19:57:51,606 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 404 flow [2021-03-24 19:57:51,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 122.11111111111111) internal successors, (1099), 9 states have internal predecessors, (1099), 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) [2021-03-24 19:57:51,606 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,606 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:51,606 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 19:57:51,607 INFO L428 AbstractCegarLoop]: === Iteration 11 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,607 INFO L82 PathProgramCache]: Analyzing trace with hash -855450480, now seen corresponding path program 3 times [2021-03-24 19:57:51,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437106319] [2021-03-24 19:57:51,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,644 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,645 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,647 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 19:57:51,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 19:57:51,661 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:51,662 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437106319] [2021-03-24 19:57:51,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:57:51,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699197717] [2021-03-24 19:57:51,665 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:57:51,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:57:51,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:57:51,666 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 162 [2021-03-24 19:57:51,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 53 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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) [2021-03-24 19:57:51,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 162 [2021-03-24 19:57:51,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,740 INFO L129 PetriNetUnfolder]: 55/198 cut-off events. [2021-03-24 19:57:51,740 INFO L130 PetriNetUnfolder]: For 1404/1436 co-relation queries the response was YES. [2021-03-24 19:57:51,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1030 conditions, 198 events. 55/198 cut-off events. For 1404/1436 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 991 event pairs, 13 based on Foata normal form. 29/221 useless extension candidates. Maximal degree in co-relation 984. Up to 81 conditions per place. [2021-03-24 19:57:51,741 INFO L132 encePairwiseOnDemand]: 155/162 looper letters, 18 selfloop transitions, 16 changer transitions 6/63 dead transitions. [2021-03-24 19:57:51,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 63 transitions, 625 flow [2021-03-24 19:57:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:57:51,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:57:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 932 transitions. [2021-03-24 19:57:51,743 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8218694885361552 [2021-03-24 19:57:51,743 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 932 transitions. [2021-03-24 19:57:51,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 932 transitions. [2021-03-24 19:57:51,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 932 transitions. [2021-03-24 19:57:51,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 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) [2021-03-24 19:57:51,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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) [2021-03-24 19:57:51,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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) [2021-03-24 19:57:51,747 INFO L185 Difference]: Start difference. First operand has 78 places, 53 transitions, 404 flow. Second operand 7 states and 932 transitions. [2021-03-24 19:57:51,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 63 transitions, 625 flow [2021-03-24 19:57:51,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 63 transitions, 558 flow, removed 16 selfloop flow, removed 9 redundant places. [2021-03-24 19:57:51,752 INFO L241 Difference]: Finished difference. Result has 76 places, 55 transitions, 434 flow [2021-03-24 19:57:51,752 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=434, PETRI_PLACES=76, PETRI_TRANSITIONS=55} [2021-03-24 19:57:51,752 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2021-03-24 19:57:51,752 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 55 transitions, 434 flow [2021-03-24 19:57:51,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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) [2021-03-24 19:57:51,753 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,753 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:51,753 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 19:57:51,753 INFO L428 AbstractCegarLoop]: === Iteration 12 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1303755058, now seen corresponding path program 1 times [2021-03-24 19:57:51,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839652498] [2021-03-24 19:57:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,826 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,826 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839652498] [2021-03-24 19:57:51,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:57:51,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311088605] [2021-03-24 19:57:51,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 19:57:51,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 19:57:51,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 19:57:51,832 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 162 [2021-03-24 19:57:51,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 162 [2021-03-24 19:57:51,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:51,896 INFO L129 PetriNetUnfolder]: 212/468 cut-off events. [2021-03-24 19:57:51,896 INFO L130 PetriNetUnfolder]: For 2371/2511 co-relation queries the response was YES. [2021-03-24 19:57:51,898 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 468 events. 212/468 cut-off events. For 2371/2511 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 2844 event pairs, 78 based on Foata normal form. 79/468 useless extension candidates. Maximal degree in co-relation 1805. Up to 258 conditions per place. [2021-03-24 19:57:51,900 INFO L132 encePairwiseOnDemand]: 156/162 looper letters, 13 selfloop transitions, 8 changer transitions 2/66 dead transitions. [2021-03-24 19:57:51,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 498 flow [2021-03-24 19:57:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:51,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 685 transitions. [2021-03-24 19:57:51,901 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.845679012345679 [2021-03-24 19:57:51,901 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 685 transitions. [2021-03-24 19:57:51,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 685 transitions. [2021-03-24 19:57:51,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:51,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 685 transitions. [2021-03-24 19:57:51,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 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) [2021-03-24 19:57:51,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2021-03-24 19:57:51,904 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2021-03-24 19:57:51,904 INFO L185 Difference]: Start difference. First operand has 76 places, 55 transitions, 434 flow. Second operand 5 states and 685 transitions. [2021-03-24 19:57:51,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 498 flow [2021-03-24 19:57:51,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 466 flow, removed 7 selfloop flow, removed 5 redundant places. [2021-03-24 19:57:51,909 INFO L241 Difference]: Finished difference. Result has 76 places, 60 transitions, 454 flow [2021-03-24 19:57:51,909 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=454, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2021-03-24 19:57:51,909 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2021-03-24 19:57:51,909 INFO L480 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 454 flow [2021-03-24 19:57:51,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:51,909 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:51,909 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:51,910 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 19:57:51,910 INFO L428 AbstractCegarLoop]: === Iteration 13 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:51,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:51,910 INFO L82 PathProgramCache]: Analyzing trace with hash 976432184, now seen corresponding path program 1 times [2021-03-24 19:57:51,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:51,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922386493] [2021-03-24 19:57:51,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:51,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,964 INFO L142 QuantifierPusher]: treesize reduction 8, result has 33.3 percent of original size [2021-03-24 19:57:51,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:51,967 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,967 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:51,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:51,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:51,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922386493] [2021-03-24 19:57:51,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:51,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 19:57:51,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232157977] [2021-03-24 19:57:51,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:57:51,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:51,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:57:51,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:57:51,973 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 162 [2021-03-24 19:57:51,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 454 flow. Second operand has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 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) [2021-03-24 19:57:51,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:51,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 162 [2021-03-24 19:57:51,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:52,037 INFO L129 PetriNetUnfolder]: 130/336 cut-off events. [2021-03-24 19:57:52,037 INFO L130 PetriNetUnfolder]: For 1949/2479 co-relation queries the response was YES. [2021-03-24 19:57:52,038 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 336 events. 130/336 cut-off events. For 1949/2479 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1868 event pairs, 11 based on Foata normal form. 153/452 useless extension candidates. Maximal degree in co-relation 1412. Up to 185 conditions per place. [2021-03-24 19:57:52,039 INFO L132 encePairwiseOnDemand]: 156/162 looper letters, 9 selfloop transitions, 15 changer transitions 3/65 dead transitions. [2021-03-24 19:57:52,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 65 transitions, 499 flow [2021-03-24 19:57:52,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 19:57:52,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 19:57:52,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 959 transitions. [2021-03-24 19:57:52,041 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.845679012345679 [2021-03-24 19:57:52,041 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 959 transitions. [2021-03-24 19:57:52,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 959 transitions. [2021-03-24 19:57:52,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:52,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 959 transitions. [2021-03-24 19:57:52,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 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) [2021-03-24 19:57:52,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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) [2021-03-24 19:57:52,045 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 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) [2021-03-24 19:57:52,045 INFO L185 Difference]: Start difference. First operand has 76 places, 60 transitions, 454 flow. Second operand 7 states and 959 transitions. [2021-03-24 19:57:52,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 65 transitions, 499 flow [2021-03-24 19:57:52,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 65 transitions, 468 flow, removed 4 selfloop flow, removed 6 redundant places. [2021-03-24 19:57:52,049 INFO L241 Difference]: Finished difference. Result has 79 places, 60 transitions, 455 flow [2021-03-24 19:57:52,049 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2021-03-24 19:57:52,049 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2021-03-24 19:57:52,050 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 455 flow [2021-03-24 19:57:52,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 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) [2021-03-24 19:57:52,050 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:52,050 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:52,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 19:57:52,050 INFO L428 AbstractCegarLoop]: === Iteration 14 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:52,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1191181649, now seen corresponding path program 1 times [2021-03-24 19:57:52,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:52,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48669856] [2021-03-24 19:57:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:52,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:52,088 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,088 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:52,090 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:52,094 INFO L142 QuantifierPusher]: treesize reduction 8, result has 33.3 percent of original size [2021-03-24 19:57:52,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:52,098 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,098 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:52,101 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,102 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:52,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48669856] [2021-03-24 19:57:52,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:52,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 19:57:52,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827671616] [2021-03-24 19:57:52,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 19:57:52,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:52,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 19:57:52,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 19:57:52,103 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 162 [2021-03-24 19:57:52,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 455 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) [2021-03-24 19:57:52,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:52,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 162 [2021-03-24 19:57:52,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:52,199 INFO L129 PetriNetUnfolder]: 95/262 cut-off events. [2021-03-24 19:57:52,200 INFO L130 PetriNetUnfolder]: For 1848/2500 co-relation queries the response was YES. [2021-03-24 19:57:52,201 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 262 events. 95/262 cut-off events. For 1848/2500 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1456 event pairs, 0 based on Foata normal form. 150/381 useless extension candidates. Maximal degree in co-relation 1207. Up to 166 conditions per place. [2021-03-24 19:57:52,201 INFO L132 encePairwiseOnDemand]: 156/162 looper letters, 5 selfloop transitions, 19 changer transitions 4/65 dead transitions. [2021-03-24 19:57:52,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 65 transitions, 519 flow [2021-03-24 19:57:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 19:57:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 19:57:52,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1227 transitions. [2021-03-24 19:57:52,204 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8415637860082305 [2021-03-24 19:57:52,204 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1227 transitions. [2021-03-24 19:57:52,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1227 transitions. [2021-03-24 19:57:52,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:52,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1227 transitions. [2021-03-24 19:57:52,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.33333333333334) internal successors, (1227), 9 states have internal predecessors, (1227), 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) [2021-03-24 19:57:52,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:52,217 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 162.0) internal successors, (1620), 10 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 19:57:52,217 INFO L185 Difference]: Start difference. First operand has 79 places, 60 transitions, 455 flow. Second operand 9 states and 1227 transitions. [2021-03-24 19:57:52,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 65 transitions, 519 flow [2021-03-24 19:57:52,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 65 transitions, 431 flow, removed 34 selfloop flow, removed 8 redundant places. [2021-03-24 19:57:52,221 INFO L241 Difference]: Finished difference. Result has 82 places, 59 transitions, 400 flow [2021-03-24 19:57:52,221 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=400, PETRI_PLACES=82, PETRI_TRANSITIONS=59} [2021-03-24 19:57:52,221 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 36 predicate places. [2021-03-24 19:57:52,221 INFO L480 AbstractCegarLoop]: Abstraction has has 82 places, 59 transitions, 400 flow [2021-03-24 19:57:52,221 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) [2021-03-24 19:57:52,221 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:52,222 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:52,222 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 19:57:52,222 INFO L428 AbstractCegarLoop]: === Iteration 15 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:52,222 INFO L82 PathProgramCache]: Analyzing trace with hash 555487376, now seen corresponding path program 1 times [2021-03-24 19:57:52,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:52,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829331945] [2021-03-24 19:57:52,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 19:57:52,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 19:57:52,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:52,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 19:57:52,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 19:57:52,265 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 19:57:52,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 19:57:52,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-24 19:57:52,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829331945] [2021-03-24 19:57:52,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 19:57:52,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 19:57:52,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763605580] [2021-03-24 19:57:52,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 19:57:52,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 19:57:52,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 19:57:52,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 19:57:52,269 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 162 [2021-03-24 19:57:52,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 59 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 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) [2021-03-24 19:57:52,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 19:57:52,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 162 [2021-03-24 19:57:52,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 19:57:52,313 INFO L129 PetriNetUnfolder]: 93/330 cut-off events. [2021-03-24 19:57:52,314 INFO L130 PetriNetUnfolder]: For 1321/1421 co-relation queries the response was YES. [2021-03-24 19:57:52,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 330 events. 93/330 cut-off events. For 1321/1421 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 2243 event pairs, 0 based on Foata normal form. 12/309 useless extension candidates. Maximal degree in co-relation 1352. Up to 115 conditions per place. [2021-03-24 19:57:52,315 INFO L132 encePairwiseOnDemand]: 158/162 looper letters, 5 selfloop transitions, 1 changer transitions 13/61 dead transitions. [2021-03-24 19:57:52,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 61 transitions, 422 flow [2021-03-24 19:57:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 19:57:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 19:57:52,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 694 transitions. [2021-03-24 19:57:52,318 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8567901234567902 [2021-03-24 19:57:52,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 694 transitions. [2021-03-24 19:57:52,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 694 transitions. [2021-03-24 19:57:52,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 19:57:52,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 694 transitions. [2021-03-24 19:57:52,320 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) [2021-03-24 19:57:52,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2021-03-24 19:57:52,321 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 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) [2021-03-24 19:57:52,321 INFO L185 Difference]: Start difference. First operand has 82 places, 59 transitions, 400 flow. Second operand 5 states and 694 transitions. [2021-03-24 19:57:52,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 61 transitions, 422 flow [2021-03-24 19:57:52,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 61 transitions, 348 flow, removed 16 selfloop flow, removed 9 redundant places. [2021-03-24 19:57:52,326 INFO L241 Difference]: Finished difference. Result has 79 places, 48 transitions, 261 flow [2021-03-24 19:57:52,326 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=79, PETRI_TRANSITIONS=48} [2021-03-24 19:57:52,326 INFO L343 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2021-03-24 19:57:52,326 INFO L480 AbstractCegarLoop]: Abstraction has has 79 places, 48 transitions, 261 flow [2021-03-24 19:57:52,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 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) [2021-03-24 19:57:52,326 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 19:57:52,326 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 19:57:52,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 19:57:52,326 INFO L428 AbstractCegarLoop]: === Iteration 16 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 19:57:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 19:57:52,326 INFO L82 PathProgramCache]: Analyzing trace with hash -802145920, now seen corresponding path program 2 times [2021-03-24 19:57:52,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 19:57:52,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894142923] [2021-03-24 19:57:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 19:57:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:57:52,346 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:57:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 19:57:52,372 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 19:57:52,401 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 19:57:52,402 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 19:57:52,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 19:57:52,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 07:57:52 BasicIcfg [2021-03-24 19:57:52,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 19:57:52,469 INFO L168 Benchmark]: Toolchain (without parser) took 12195.11 ms. Allocated memory was 390.1 MB in the beginning and 698.4 MB in the end (delta: 308.3 MB). Free memory was 352.8 MB in the beginning and 580.6 MB in the end (delta: -227.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:52,470 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 390.1 MB. Free memory was 371.1 MB in the beginning and 371.1 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 19:57:52,470 INFO L168 Benchmark]: CACSL2BoogieTranslator took 465.49 ms. Allocated memory is still 390.1 MB. Free memory was 352.6 MB in the beginning and 348.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:52,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 390.1 MB. Free memory was 348.8 MB in the beginning and 346.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:52,470 INFO L168 Benchmark]: Boogie Preprocessor took 23.08 ms. Allocated memory is still 390.1 MB. Free memory was 346.7 MB in the beginning and 344.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:52,470 INFO L168 Benchmark]: RCFGBuilder took 1176.40 ms. Allocated memory is still 390.1 MB. Free memory was 344.0 MB in the beginning and 324.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 165.7 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:52,470 INFO L168 Benchmark]: TraceAbstraction took 10493.13 ms. Allocated memory was 390.1 MB in the beginning and 698.4 MB in the end (delta: 308.3 MB). Free memory was 324.7 MB in the beginning and 580.6 MB in the end (delta: -255.9 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.0 GB. [2021-03-24 19:57:52,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 390.1 MB. Free memory was 371.1 MB in the beginning and 371.1 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 465.49 ms. Allocated memory is still 390.1 MB. Free memory was 352.6 MB in the beginning and 348.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 32.92 ms. Allocated memory is still 390.1 MB. Free memory was 348.8 MB in the beginning and 346.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.08 ms. Allocated memory is still 390.1 MB. Free memory was 346.7 MB in the beginning and 344.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1176.40 ms. Allocated memory is still 390.1 MB. Free memory was 344.0 MB in the beginning and 324.7 MB in the end (delta: 19.3 MB). Peak memory consumption was 165.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 10493.13 ms. Allocated memory was 390.1 MB in the beginning and 698.4 MB in the end (delta: 308.3 MB). Free memory was 324.7 MB in the beginning and 580.6 MB in the end (delta: -255.9 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7231.0ms, 101 PlacesBefore, 46 PlacesAfterwards, 93 TransitionsBefore, 37 TransitionsAfterwards, 1578 CoEnabledTransitionPairs, 5 FixpointIterations, 26 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 66 TotalNumberOfCompositions, 2611 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1403, positive: 1332, positive conditional: 0, positive unconditional: 1332, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1049, positive: 1010, positive conditional: 0, positive unconditional: 1010, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1049, positive: 1010, positive conditional: 0, positive unconditional: 1010, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1049, positive: 1007, positive conditional: 0, positive unconditional: 1007, negative: 42, negative conditional: 0, negative unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 42, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 547, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 540, negative conditional: 0, negative unconditional: 540, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1403, positive: 322, positive conditional: 0, positive unconditional: 322, negative: 32, negative conditional: 0, negative unconditional: 32, unknown: 1049, unknown conditional: 0, unknown unconditional: 1049] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 95, Positive conditional cache size: 0, Positive unconditional cache size: 95, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23 - 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_p0_EAX = 0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0] [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L718] 0 _Bool y$flush_delayed; [L719] 0 int y$mem_tmp; [L720] 0 _Bool y$r_buff0_thd0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0] [L721] 0 _Bool y$r_buff0_thd1; [L722] 0 _Bool y$r_buff0_thd2; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0] [L723] 0 _Bool y$r_buff0_thd3; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=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] [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$r_buff1_thd3; [L728] 0 _Bool y$read_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$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] [L729] 0 int *y$read_delayed_var; [L730] 0 int y$w_buff0; [L731] 0 _Bool y$w_buff0_used; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, y$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$w_buff0_used=0] [L732] 0 int y$w_buff1; [L733] 0 _Bool y$w_buff1_used; [L735] 0 int z = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=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 t2528; [L816] FCALL, FORK 0 pthread_create(&t2528, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_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] [L817] 0 pthread_t t2529; [L818] FCALL, FORK 0 pthread_create(&t2529, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_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] [L819] 0 pthread_t t2530; [L820] FCALL, FORK 0 pthread_create(&t2530, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_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] [L778] 3 y$w_buff1 = y$w_buff0 [L779] 3 y$w_buff0 = 2 [L780] 3 y$w_buff1_used = y$w_buff0_used [L781] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L783] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L784] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L785] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L786] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L787] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, main$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] [L790] 3 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_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=1] [L741] 1 z = 2 VAL [__unbuffered_cnt=0, __unbuffered_p0_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=2] [L746] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_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=2] [L751] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L753] 1 return 0; [L758] 2 x = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_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=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=2] [L761] 2 y = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_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=1, 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=2] [L764] 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) [L764] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L764] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L764] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L765] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L765] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L766] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L766] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L767] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L767] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L768] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L768] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L771] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L773] 2 return 0; [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L793] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L794] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L794] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L795] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L795] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L796] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L796] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L797] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L797] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L800] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L802] 3 return 0; [L822] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L826] 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) [L826] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L826] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L827] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L827] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L828] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L828] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L829] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L829] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L830] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L830] 0 y$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 [L833] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L834] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L835] 0 y$flush_delayed = weak$$choice2 [L836] 0 y$mem_tmp = y [L837] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L837] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L838] EXPR 0 weak$$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$w_buff0)) [L838] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L839] EXPR 0 weak$$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$w_buff1)) [L839] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L840] EXPR 0 weak$$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)) [L840] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L841] EXPR 0 weak$$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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L842] EXPR 0 weak$$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)) [L842] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L843] EXPR 0 weak$$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$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L843] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L844] 0 main$tmp_guard1 = !(y == 2 && z == 2 && __unbuffered_p0_EAX == 0) [L845] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L845] 0 y = y$flush_delayed ? y$mem_tmp : y [L846] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=255, x=1, 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=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 95 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 3.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 10348.9ms, OverallIterations: 16, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 1409.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7321.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 97 SDtfs, 103 SDslu, 122 SDs, 0 SdLazy, 409 SolverSat, 133 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 376.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 357.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=455occurred in iteration=13, InterpolantAutomatonStates: 104, 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: 53.9ms SsaConstructionTime, 380.2ms SatisfiabilityAnalysisTime, 900.9ms InterpolantComputationTime, 367 NumberOfCodeBlocks, 367 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 322 ConstructedInterpolants, 0 QuantifiedInterpolants, 1378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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...