/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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d5b4239aa45c8d22a30959944f2ef622f7386a6d-d5b4239 [2021-03-24 10:55:39,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-24 10:55:39,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-24 10:55:39,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-24 10:55:39,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-24 10:55:39,395 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-24 10:55:39,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-24 10:55:39,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-24 10:55:39,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-24 10:55:39,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-24 10:55:39,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-24 10:55:39,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-24 10:55:39,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-24 10:55:39,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-24 10:55:39,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-24 10:55:39,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-24 10:55:39,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-24 10:55:39,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-24 10:55:39,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-24 10:55:39,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-24 10:55:39,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-24 10:55:39,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-24 10:55:39,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-24 10:55:39,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-24 10:55:39,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-03-24 10:55:39,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-03-24 10:55:39,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-03-24 10:55:39,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-03-24 10:55:39,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-03-24 10:55:39,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-03-24 10:55:39,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-24 10:55:39,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-24 10:55:39,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-24 10:55:39,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-24 10:55:39,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-24 10:55:39,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-24 10:55:39,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-24 10:55:39,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-24 10:55:39,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-24 10:55:39,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-24 10:55:39,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-24 10:55:39,441 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-VariableLbe.epf [2021-03-24 10:55:39,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-24 10:55:39,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-24 10:55:39,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-24 10:55:39,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-24 10:55:39,461 INFO L138 SettingsManager]: * Use SBE=true [2021-03-24 10:55:39,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-24 10:55:39,462 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-24 10:55:39,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-24 10:55:39,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-24 10:55:39,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-24 10:55:39,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-24 10:55:39,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-24 10:55:39,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-24 10:55:39,463 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-24 10:55:39,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-24 10:55:39,463 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-24 10:55:39,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-24 10:55:39,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-24 10:55:39,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-24 10:55:39,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-24 10:55:39,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-24 10:55:39,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-24 10:55:39,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-24 10:55:39,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-24 10:55:39,464 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-24 10:55:39,464 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-24 10:55:39,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-24 10:55:39,465 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2021-03-24 10:55:39,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-03-24 10:55:39,465 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-24 10:55:39,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-24 10:55:39,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-24 10:55:39,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-24 10:55:39,812 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-24 10:55:39,813 INFO L275 PluginConnector]: CDTParser initialized [2021-03-24 10:55:39,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix056_power.opt.i [2021-03-24 10:55:39,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6afad18/6ee0c8a819e344d483b163216b79a3a7/FLAG4c61455ac [2021-03-24 10:55:40,465 INFO L306 CDTParser]: Found 1 translation units. [2021-03-24 10:55:40,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.opt.i [2021-03-24 10:55:40,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6afad18/6ee0c8a819e344d483b163216b79a3a7/FLAG4c61455ac [2021-03-24 10:55:40,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d6afad18/6ee0c8a819e344d483b163216b79a3a7 [2021-03-24 10:55:40,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-24 10:55:40,857 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-24 10:55:40,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-24 10:55:40,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-24 10:55:40,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-24 10:55:40,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:55:40" (1/1) ... [2021-03-24 10:55:40,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44255fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:40, skipping insertion in model container [2021-03-24 10:55:40,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.03 10:55:40" (1/1) ... [2021-03-24 10:55:40,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-24 10:55:40,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-24 10:55:41,103 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.opt.i[950,963] [2021-03-24 10:55:41,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:55:41,287 INFO L203 MainTranslator]: Completed pre-run [2021-03-24 10:55:41,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix056_power.opt.i[950,963] [2021-03-24 10:55:41,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-24 10:55:41,417 INFO L208 MainTranslator]: Completed translation [2021-03-24 10:55:41,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41 WrapperNode [2021-03-24 10:55:41,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-24 10:55:41,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-24 10:55:41,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-24 10:55:41,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-24 10:55:41,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (1/1) ... [2021-03-24 10:55:41,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (1/1) ... [2021-03-24 10:55:41,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-24 10:55:41,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-24 10:55:41,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-24 10:55:41,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-24 10:55:41,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (1/1) ... [2021-03-24 10:55:41,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (1/1) ... [2021-03-24 10:55:41,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (1/1) ... [2021-03-24 10:55:41,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (1/1) ... [2021-03-24 10:55:41,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (1/1) ... [2021-03-24 10:55:41,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (1/1) ... [2021-03-24 10:55:41,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (1/1) ... [2021-03-24 10:55:41,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-24 10:55:41,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-24 10:55:41,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-24 10:55:41,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-24 10:55:41,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (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 10:55:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-24 10:55:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-24 10:55:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-24 10:55:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-24 10:55:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-24 10:55:41,574 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-24 10:55:41,574 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-24 10:55:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-24 10:55:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-24 10:55:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-24 10:55:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-24 10:55:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-24 10:55:41,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-24 10:55:41,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-24 10:55:41,577 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 10:55:43,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-24 10:55:43,374 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-03-24 10:55:43,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:55:43 BoogieIcfgContainer [2021-03-24 10:55:43,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-24 10:55:43,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-24 10:55:43,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-24 10:55:43,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-24 10:55:43,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.03 10:55:40" (1/3) ... [2021-03-24 10:55:43,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b5ccd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:55:43, skipping insertion in model container [2021-03-24 10:55:43,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.03 10:55:41" (2/3) ... [2021-03-24 10:55:43,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b5ccd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.03 10:55:43, skipping insertion in model container [2021-03-24 10:55:43,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.03 10:55:43" (3/3) ... [2021-03-24 10:55:43,386 INFO L111 eAbstractionObserver]: Analyzing ICFG mix056_power.opt.i [2021-03-24 10:55:43,391 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-24 10:55:43,395 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-03-24 10:55:43,396 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-24 10:55:43,427 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,428 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,428 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,429 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,429 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,429 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,430 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,430 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,430 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,430 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,431 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,432 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,433 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,434 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,435 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,435 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,436 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,436 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,436 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,436 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,436 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,436 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,436 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,436 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,437 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,437 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,437 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,437 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,438 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,439 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,440 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,440 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,440 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,440 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,441 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,442 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,442 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,442 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,443 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,443 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,443 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,444 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,444 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,445 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,446 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,446 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,447 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2___VERIFIER_assert_#in~expression| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,447 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,448 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2___VERIFIER_assert_~expression not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#t~ite16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,448 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-24 10:55:43,450 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-24 10:55:43,465 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-03-24 10:55:43,492 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-24 10:55:43,493 INFO L377 AbstractCegarLoop]: Hoare is false [2021-03-24 10:55:43,493 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-24 10:55:43,493 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-24 10:55:43,497 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-24 10:55:43,497 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-24 10:55:43,497 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-24 10:55:43,497 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-24 10:55:43,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 207 flow [2021-03-24 10:55:43,561 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-24 10:55:43,561 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:55:43,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-24 10:55:43,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 207 flow [2021-03-24 10:55:43,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 93 transitions, 195 flow [2021-03-24 10:55:43,580 INFO L174 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2021-03-24 10:55:43,586 INFO L137 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-24 10:55:43,589 INFO L129 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 93 transitions, 195 flow [2021-03-24 10:55:43,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 195 flow [2021-03-24 10:55:43,620 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-03-24 10:55:43,620 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:55:43,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2021-03-24 10:55:43,628 INFO L142 LiptonReduction]: Number of co-enabled transitions 1578 [2021-03-24 10:55:44,858 WARN L205 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 186 [2021-03-24 10:55:45,175 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2021-03-24 10:55:46,570 WARN L205 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 310 DAG size of output: 266 [2021-03-24 10:55:47,188 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-03-24 10:55:47,601 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-03-24 10:55:48,018 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 88 [2021-03-24 10:55:48,151 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-03-24 10:55:48,984 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-03-24 10:55:49,285 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-03-24 10:55:50,479 WARN L205 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 265 DAG size of output: 264 [2021-03-24 10:55:51,056 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2021-03-24 10:55:51,323 INFO L154 LiptonReduction]: Checked pairs total: 2725 [2021-03-24 10:55:51,323 INFO L156 LiptonReduction]: Total number of compositions: 68 [2021-03-24 10:55:51,325 INFO L199 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 7746 [2021-03-24 10:55:51,333 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-03-24 10:55:51,334 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:55:51,334 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:51,334 INFO L263 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-24 10:55:51,335 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 10:55:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:51,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1719955494, now seen corresponding path program 1 times [2021-03-24 10:55:51,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:51,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810875729] [2021-03-24 10:55:51,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:51,539 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:51,540 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:51,541 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:51,542 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:51,547 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 10:55:51,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810875729] [2021-03-24 10:55:51,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:51,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-24 10:55:51,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464708670] [2021-03-24 10:55:51,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-24 10:55:51,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:51,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-24 10:55:51,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-24 10:55:51,567 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 164 [2021-03-24 10:55:51,569 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:55:51,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:51,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 164 [2021-03-24 10:55:51,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:51,658 INFO L129 PetriNetUnfolder]: 23/90 cut-off events. [2021-03-24 10:55:51,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:55:51,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 90 events. 23/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 305 event pairs, 3 based on Foata normal form. 5/87 useless extension candidates. Maximal degree in co-relation 129. Up to 37 conditions per place. [2021-03-24 10:55:51,662 INFO L132 encePairwiseOnDemand]: 160/164 looper letters, 7 selfloop transitions, 2 changer transitions 3/37 dead transitions. [2021-03-24 10:55:51,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 105 flow [2021-03-24 10:55:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-24 10:55:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-03-24 10:55:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2021-03-24 10:55:51,681 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8882113821138211 [2021-03-24 10:55:51,682 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2021-03-24 10:55:51,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2021-03-24 10:55:51,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:51,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2021-03-24 10:55:51,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 10:55:51,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 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 10:55:51,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 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 10:55:51,702 INFO L185 Difference]: Start difference. First operand has 45 places, 36 transitions, 81 flow. Second operand 3 states and 437 transitions. [2021-03-24 10:55:51,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 105 flow [2021-03-24 10:55:51,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 102 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-03-24 10:55:51,706 INFO L241 Difference]: Finished difference. Result has 42 places, 31 transitions, 72 flow [2021-03-24 10:55:51,708 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2021-03-24 10:55:51,708 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, -3 predicate places. [2021-03-24 10:55:51,708 INFO L480 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 72 flow [2021-03-24 10:55:51,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:55:51,709 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:51,709 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 10:55:51,709 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-24 10:55:51,709 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 10:55:51,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:51,711 INFO L82 PathProgramCache]: Analyzing trace with hash 236066665, now seen corresponding path program 1 times [2021-03-24 10:55:51,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:51,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314919424] [2021-03-24 10:55:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:51,866 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:51,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:51,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:51,868 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:51,875 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:51,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:51,881 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 10:55:51,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314919424] [2021-03-24 10:55:51,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:51,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:55:51,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767893624] [2021-03-24 10:55:51,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:55:51,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:51,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:55:51,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:55:51,887 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 164 [2021-03-24 10:55:51,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:55:51,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:51,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 164 [2021-03-24 10:55:51,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:51,924 INFO L129 PetriNetUnfolder]: 6/57 cut-off events. [2021-03-24 10:55:51,925 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-24 10:55:51,926 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 57 events. 6/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 131 event pairs, 2 based on Foata normal form. 4/58 useless extension candidates. Maximal degree in co-relation 70. Up to 15 conditions per place. [2021-03-24 10:55:51,926 INFO L132 encePairwiseOnDemand]: 159/164 looper letters, 4 selfloop transitions, 3 changer transitions 5/38 dead transitions. [2021-03-24 10:55:51,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 110 flow [2021-03-24 10:55:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:55:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:55:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 724 transitions. [2021-03-24 10:55:51,933 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8829268292682927 [2021-03-24 10:55:51,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 724 transitions. [2021-03-24 10:55:51,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 724 transitions. [2021-03-24 10:55:51,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:51,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 724 transitions. [2021-03-24 10:55:51,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.8) internal successors, (724), 5 states have internal predecessors, (724), 0 states have call successors, (0), 0 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 10:55:51,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 10:55:51,940 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 10:55:51,940 INFO L185 Difference]: Start difference. First operand has 42 places, 31 transitions, 72 flow. Second operand 5 states and 724 transitions. [2021-03-24 10:55:51,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 110 flow [2021-03-24 10:55:51,941 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 10:55:51,942 INFO L241 Difference]: Finished difference. Result has 45 places, 33 transitions, 95 flow [2021-03-24 10:55:51,942 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, 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 10:55:51,942 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2021-03-24 10:55:51,942 INFO L480 AbstractCegarLoop]: Abstraction has has 45 places, 33 transitions, 95 flow [2021-03-24 10:55:51,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:55:51,943 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:51,943 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 10:55:51,943 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-24 10:55:51,943 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 10:55:51,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:51,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1271865464, now seen corresponding path program 1 times [2021-03-24 10:55:51,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:51,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074062491] [2021-03-24 10:55:51,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:52,077 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,078 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:52,078 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,079 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:52,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:52,089 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,091 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:52,100 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,101 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 10:55:52,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-03-24 10:55:52,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 10:55:52,170 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:52,170 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:52,177 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 10:55:52,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074062491] [2021-03-24 10:55:52,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:52,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 10:55:52,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328366610] [2021-03-24 10:55:52,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 10:55:52,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:52,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 10:55:52,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-03-24 10:55:52,181 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 164 [2021-03-24 10:55:52,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 33 transitions, 95 flow. Second operand has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 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 10:55:52,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:52,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 164 [2021-03-24 10:55:52,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:52,342 INFO L129 PetriNetUnfolder]: 93/226 cut-off events. [2021-03-24 10:55:52,342 INFO L130 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2021-03-24 10:55:52,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 226 events. 93/226 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1040 event pairs, 40 based on Foata normal form. 20/233 useless extension candidates. Maximal degree in co-relation 469. Up to 118 conditions per place. [2021-03-24 10:55:52,346 INFO L132 encePairwiseOnDemand]: 154/164 looper letters, 9 selfloop transitions, 9 changer transitions 10/49 dead transitions. [2021-03-24 10:55:52,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 49 transitions, 187 flow [2021-03-24 10:55:52,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-24 10:55:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-03-24 10:55:52,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1251 transitions. [2021-03-24 10:55:52,350 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7628048780487805 [2021-03-24 10:55:52,350 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1251 transitions. [2021-03-24 10:55:52,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1251 transitions. [2021-03-24 10:55:52,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:52,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1251 transitions. [2021-03-24 10:55:52,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 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 10:55:52,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 164.0) internal successors, (1804), 11 states have internal predecessors, (1804), 0 states have call successors, (0), 0 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 10:55:52,358 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 164.0) internal successors, (1804), 11 states have internal predecessors, (1804), 0 states have call successors, (0), 0 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 10:55:52,358 INFO L185 Difference]: Start difference. First operand has 45 places, 33 transitions, 95 flow. Second operand 10 states and 1251 transitions. [2021-03-24 10:55:52,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 49 transitions, 187 flow [2021-03-24 10:55:52,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 182 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-03-24 10:55:52,361 INFO L241 Difference]: Finished difference. Result has 55 places, 37 transitions, 144 flow [2021-03-24 10:55:52,361 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=144, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2021-03-24 10:55:52,361 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 10 predicate places. [2021-03-24 10:55:52,361 INFO L480 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 144 flow [2021-03-24 10:55:52,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 122.88888888888889) internal successors, (1106), 9 states have internal predecessors, (1106), 0 states have call successors, (0), 0 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 10:55:52,362 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:52,362 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 10:55:52,362 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-24 10:55:52,362 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 10:55:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:52,363 INFO L82 PathProgramCache]: Analyzing trace with hash -745339682, now seen corresponding path program 1 times [2021-03-24 10:55:52,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:52,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284580200] [2021-03-24 10:55:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:52,451 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,452 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:52,452 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,453 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:52,455 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,456 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:52,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:52,469 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:52,469 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:52,473 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 10:55:52,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284580200] [2021-03-24 10:55:52,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:52,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 10:55:52,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297485889] [2021-03-24 10:55:52,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 10:55:52,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:52,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 10:55:52,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 10:55:52,481 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 164 [2021-03-24 10:55:52,482 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 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 10:55:52,482 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:52,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 164 [2021-03-24 10:55:52,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:52,585 INFO L129 PetriNetUnfolder]: 82/219 cut-off events. [2021-03-24 10:55:52,585 INFO L130 PetriNetUnfolder]: For 359/361 co-relation queries the response was YES. [2021-03-24 10:55:52,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 219 events. 82/219 cut-off events. For 359/361 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1009 event pairs, 8 based on Foata normal form. 14/224 useless extension candidates. Maximal degree in co-relation 612. Up to 100 conditions per place. [2021-03-24 10:55:52,588 INFO L132 encePairwiseOnDemand]: 156/164 looper letters, 13 selfloop transitions, 8 changer transitions 5/49 dead transitions. [2021-03-24 10:55:52,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 252 flow [2021-03-24 10:55:52,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:55:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:55:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 928 transitions. [2021-03-24 10:55:52,592 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8083623693379791 [2021-03-24 10:55:52,592 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 928 transitions. [2021-03-24 10:55:52,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 928 transitions. [2021-03-24 10:55:52,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:52,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 928 transitions. [2021-03-24 10:55:52,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.57142857142858) internal successors, (928), 7 states have internal predecessors, (928), 0 states have call successors, (0), 0 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 10:55:52,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 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 10:55:52,599 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 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 10:55:52,599 INFO L185 Difference]: Start difference. First operand has 55 places, 37 transitions, 144 flow. Second operand 7 states and 928 transitions. [2021-03-24 10:55:52,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 252 flow [2021-03-24 10:55:52,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 242 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-03-24 10:55:52,603 INFO L241 Difference]: Finished difference. Result has 57 places, 40 transitions, 176 flow [2021-03-24 10:55:52,604 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=176, PETRI_PLACES=57, PETRI_TRANSITIONS=40} [2021-03-24 10:55:52,604 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 12 predicate places. [2021-03-24 10:55:52,604 INFO L480 AbstractCegarLoop]: Abstraction has has 57 places, 40 transitions, 176 flow [2021-03-24 10:55:52,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 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 10:55:52,604 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:52,604 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 10:55:52,605 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-24 10:55:52,605 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 10:55:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:52,605 INFO L82 PathProgramCache]: Analyzing trace with hash -451118312, now seen corresponding path program 2 times [2021-03-24 10:55:52,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:52,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664815805] [2021-03-24 10:55:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:52,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,700 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:52,701 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,701 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:52,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,705 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:52,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:52,718 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,719 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 10:55:52,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:52,735 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:52,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:52,741 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 10:55:52,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664815805] [2021-03-24 10:55:52,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:52,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 10:55:52,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277966695] [2021-03-24 10:55:52,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 10:55:52,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:52,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 10:55:52,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-03-24 10:55:52,743 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 164 [2021-03-24 10:55:52,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 40 transitions, 176 flow. Second operand has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 10:55:52,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:52,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 164 [2021-03-24 10:55:52,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:52,881 INFO L129 PetriNetUnfolder]: 72/205 cut-off events. [2021-03-24 10:55:52,881 INFO L130 PetriNetUnfolder]: For 555/565 co-relation queries the response was YES. [2021-03-24 10:55:52,882 INFO L84 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 205 events. 72/205 cut-off events. For 555/565 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 975 event pairs, 10 based on Foata normal form. 18/214 useless extension candidates. Maximal degree in co-relation 665. Up to 95 conditions per place. [2021-03-24 10:55:52,883 INFO L132 encePairwiseOnDemand]: 156/164 looper letters, 13 selfloop transitions, 10 changer transitions 6/51 dead transitions. [2021-03-24 10:55:52,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 51 transitions, 312 flow [2021-03-24 10:55:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:55:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:55:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1170 transitions. [2021-03-24 10:55:52,887 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7926829268292683 [2021-03-24 10:55:52,887 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1170 transitions. [2021-03-24 10:55:52,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1170 transitions. [2021-03-24 10:55:52,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:52,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1170 transitions. [2021-03-24 10:55:52,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 130.0) internal successors, (1170), 9 states have internal predecessors, (1170), 0 states have call successors, (0), 0 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 10:55:52,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:52,893 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:52,894 INFO L185 Difference]: Start difference. First operand has 57 places, 40 transitions, 176 flow. Second operand 9 states and 1170 transitions. [2021-03-24 10:55:52,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 51 transitions, 312 flow [2021-03-24 10:55:52,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 291 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-03-24 10:55:52,897 INFO L241 Difference]: Finished difference. Result has 63 places, 42 transitions, 210 flow [2021-03-24 10:55:52,897 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=210, PETRI_PLACES=63, PETRI_TRANSITIONS=42} [2021-03-24 10:55:52,897 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 18 predicate places. [2021-03-24 10:55:52,897 INFO L480 AbstractCegarLoop]: Abstraction has has 63 places, 42 transitions, 210 flow [2021-03-24 10:55:52,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 128.0) internal successors, (1024), 8 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 10:55:52,898 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:52,898 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 10:55:52,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-24 10:55:52,898 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 10:55:52,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:52,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1801542985, now seen corresponding path program 1 times [2021-03-24 10:55:52,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:52,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962617599] [2021-03-24 10:55:52,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:52,946 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:52,947 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,947 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:52,950 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,950 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:52,955 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,956 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:52,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:52,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:52,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:52,981 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.8 percent of original size [2021-03-24 10:55:52,982 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-03-24 10:55:53,000 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:53,000 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:53,006 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 10:55:53,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962617599] [2021-03-24 10:55:53,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:53,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 10:55:53,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289761590] [2021-03-24 10:55:53,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 10:55:53,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:53,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 10:55:53,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-03-24 10:55:53,009 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 164 [2021-03-24 10:55:53,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 42 transitions, 210 flow. Second operand has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 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 10:55:53,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:53,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 164 [2021-03-24 10:55:53,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:53,143 INFO L129 PetriNetUnfolder]: 66/175 cut-off events. [2021-03-24 10:55:53,143 INFO L130 PetriNetUnfolder]: For 610/622 co-relation queries the response was YES. [2021-03-24 10:55:53,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 175 events. 66/175 cut-off events. For 610/622 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 757 event pairs, 10 based on Foata normal form. 15/182 useless extension candidates. Maximal degree in co-relation 645. Up to 91 conditions per place. [2021-03-24 10:55:53,145 INFO L132 encePairwiseOnDemand]: 155/164 looper letters, 12 selfloop transitions, 10 changer transitions 3/47 dead transitions. [2021-03-24 10:55:53,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 47 transitions, 295 flow [2021-03-24 10:55:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:55:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:55:53,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1158 transitions. [2021-03-24 10:55:53,149 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7845528455284553 [2021-03-24 10:55:53,149 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1158 transitions. [2021-03-24 10:55:53,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1158 transitions. [2021-03-24 10:55:53,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:53,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1158 transitions. [2021-03-24 10:55:53,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.66666666666666) internal successors, (1158), 9 states have internal predecessors, (1158), 0 states have call successors, (0), 0 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 10:55:53,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:53,155 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:53,155 INFO L185 Difference]: Start difference. First operand has 63 places, 42 transitions, 210 flow. Second operand 9 states and 1158 transitions. [2021-03-24 10:55:53,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 47 transitions, 295 flow [2021-03-24 10:55:53,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 47 transitions, 273 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-03-24 10:55:53,160 INFO L241 Difference]: Finished difference. Result has 66 places, 42 transitions, 221 flow [2021-03-24 10:55:53,160 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=221, PETRI_PLACES=66, PETRI_TRANSITIONS=42} [2021-03-24 10:55:53,160 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 21 predicate places. [2021-03-24 10:55:53,160 INFO L480 AbstractCegarLoop]: Abstraction has has 66 places, 42 transitions, 221 flow [2021-03-24 10:55:53,161 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 127.0) internal successors, (1143), 9 states have internal predecessors, (1143), 0 states have call successors, (0), 0 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 10:55:53,161 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:53,161 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 10:55:53,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-24 10:55:53,161 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 10:55:53,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:53,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1801591035, now seen corresponding path program 1 times [2021-03-24 10:55:53,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:53,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990002897] [2021-03-24 10:55:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:53,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:53,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:53,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:53,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:53,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:53,283 INFO L142 QuantifierPusher]: treesize reduction 10, result has 81.5 percent of original size [2021-03-24 10:55:53,284 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-03-24 10:55:53,299 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:53,299 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:53,304 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 10:55:53,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990002897] [2021-03-24 10:55:53,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:53,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 10:55:53,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352815340] [2021-03-24 10:55:53,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 10:55:53,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 10:55:53,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 10:55:53,310 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 164 [2021-03-24 10:55:53,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 42 transitions, 221 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 10:55:53,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:53,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 164 [2021-03-24 10:55:53,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:53,440 INFO L129 PetriNetUnfolder]: 74/193 cut-off events. [2021-03-24 10:55:53,440 INFO L130 PetriNetUnfolder]: For 725/733 co-relation queries the response was YES. [2021-03-24 10:55:53,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 193 events. 74/193 cut-off events. For 725/733 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 862 event pairs, 8 based on Foata normal form. 12/196 useless extension candidates. Maximal degree in co-relation 730. Up to 95 conditions per place. [2021-03-24 10:55:53,443 INFO L132 encePairwiseOnDemand]: 155/164 looper letters, 13 selfloop transitions, 11 changer transitions 5/51 dead transitions. [2021-03-24 10:55:53,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 51 transitions, 343 flow [2021-03-24 10:55:53,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 10:55:53,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 10:55:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1035 transitions. [2021-03-24 10:55:53,446 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7888719512195121 [2021-03-24 10:55:53,447 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1035 transitions. [2021-03-24 10:55:53,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1035 transitions. [2021-03-24 10:55:53,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:53,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1035 transitions. [2021-03-24 10:55:53,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.375) internal successors, (1035), 8 states have internal predecessors, (1035), 0 states have call successors, (0), 0 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 10:55:53,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 10:55:53,453 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 10:55:53,453 INFO L185 Difference]: Start difference. First operand has 66 places, 42 transitions, 221 flow. Second operand 8 states and 1035 transitions. [2021-03-24 10:55:53,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 51 transitions, 343 flow [2021-03-24 10:55:53,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 51 transitions, 312 flow, removed 4 selfloop flow, removed 9 redundant places. [2021-03-24 10:55:53,458 INFO L241 Difference]: Finished difference. Result has 65 places, 44 transitions, 243 flow [2021-03-24 10:55:53,458 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=243, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2021-03-24 10:55:53,459 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 20 predicate places. [2021-03-24 10:55:53,459 INFO L480 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 243 flow [2021-03-24 10:55:53,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 10:55:53,459 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:53,459 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 10:55:53,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-24 10:55:53,460 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 10:55:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:53,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1099761349, now seen corresponding path program 2 times [2021-03-24 10:55:53,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:53,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747827678] [2021-03-24 10:55:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:53,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:53,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:53,540 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,541 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:53,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 10:55:53,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 10:55:53,572 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,573 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 10:55:53,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,588 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 10:55:53,606 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:53,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:53,612 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 10:55:53,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747827678] [2021-03-24 10:55:53,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:53,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-24 10:55:53,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211582844] [2021-03-24 10:55:53,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-24 10:55:53,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:53,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-24 10:55:53,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-03-24 10:55:53,615 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 164 [2021-03-24 10:55:53,616 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 243 flow. Second operand has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 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 10:55:53,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:53,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 164 [2021-03-24 10:55:53,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:53,775 INFO L129 PetriNetUnfolder]: 76/197 cut-off events. [2021-03-24 10:55:53,775 INFO L130 PetriNetUnfolder]: For 825/833 co-relation queries the response was YES. [2021-03-24 10:55:53,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 197 events. 76/197 cut-off events. For 825/833 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 873 event pairs, 8 based on Foata normal form. 12/200 useless extension candidates. Maximal degree in co-relation 850. Up to 97 conditions per place. [2021-03-24 10:55:53,778 INFO L132 encePairwiseOnDemand]: 155/164 looper letters, 13 selfloop transitions, 14 changer transitions 5/53 dead transitions. [2021-03-24 10:55:53,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 53 transitions, 397 flow [2021-03-24 10:55:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:55:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:55:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1125 transitions. [2021-03-24 10:55:53,781 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7621951219512195 [2021-03-24 10:55:53,781 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1125 transitions. [2021-03-24 10:55:53,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1125 transitions. [2021-03-24 10:55:53,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:53,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1125 transitions. [2021-03-24 10:55:53,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.0) internal successors, (1125), 9 states have internal predecessors, (1125), 0 states have call successors, (0), 0 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 10:55:53,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:53,787 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:53,787 INFO L185 Difference]: Start difference. First operand has 65 places, 44 transitions, 243 flow. Second operand 9 states and 1125 transitions. [2021-03-24 10:55:53,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 53 transitions, 397 flow [2021-03-24 10:55:53,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 53 transitions, 368 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-03-24 10:55:53,791 INFO L241 Difference]: Finished difference. Result has 69 places, 46 transitions, 284 flow [2021-03-24 10:55:53,792 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=284, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2021-03-24 10:55:53,792 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 24 predicate places. [2021-03-24 10:55:53,792 INFO L480 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 284 flow [2021-03-24 10:55:53,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 123.11111111111111) internal successors, (1108), 9 states have internal predecessors, (1108), 0 states have call successors, (0), 0 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 10:55:53,793 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:53,793 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 10:55:53,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-24 10:55:53,793 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 10:55:53,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:53,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1803061365, now seen corresponding path program 3 times [2021-03-24 10:55:53,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:53,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312939542] [2021-03-24 10:55:53,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:53,852 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:53,853 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,853 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:53,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:53,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,863 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:53,863 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,864 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:53,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:53,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:53,880 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:53,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:53,884 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 10:55:53,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312939542] [2021-03-24 10:55:53,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:53,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 10:55:53,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647956718] [2021-03-24 10:55:53,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-24 10:55:53,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:53,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-24 10:55:53,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-24 10:55:53,887 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 164 [2021-03-24 10:55:53,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 10:55:53,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:53,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 164 [2021-03-24 10:55:53,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:54,014 INFO L129 PetriNetUnfolder]: 86/219 cut-off events. [2021-03-24 10:55:54,014 INFO L130 PetriNetUnfolder]: For 1568/1576 co-relation queries the response was YES. [2021-03-24 10:55:54,015 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1171 conditions, 219 events. 86/219 cut-off events. For 1568/1576 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1016 event pairs, 10 based on Foata normal form. 12/222 useless extension candidates. Maximal degree in co-relation 1128. Up to 106 conditions per place. [2021-03-24 10:55:54,017 INFO L132 encePairwiseOnDemand]: 154/164 looper letters, 14 selfloop transitions, 17 changer transitions 3/56 dead transitions. [2021-03-24 10:55:54,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 56 transitions, 468 flow [2021-03-24 10:55:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:55:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:55:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1159 transitions. [2021-03-24 10:55:54,020 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.785230352303523 [2021-03-24 10:55:54,021 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1159 transitions. [2021-03-24 10:55:54,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1159 transitions. [2021-03-24 10:55:54,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:54,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1159 transitions. [2021-03-24 10:55:54,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.77777777777777) internal successors, (1159), 9 states have internal predecessors, (1159), 0 states have call successors, (0), 0 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 10:55:54,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:54,027 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:54,027 INFO L185 Difference]: Start difference. First operand has 69 places, 46 transitions, 284 flow. Second operand 9 states and 1159 transitions. [2021-03-24 10:55:54,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 56 transitions, 468 flow [2021-03-24 10:55:54,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 376 flow, removed 34 selfloop flow, removed 9 redundant places. [2021-03-24 10:55:54,033 INFO L241 Difference]: Finished difference. Result has 68 places, 51 transitions, 320 flow [2021-03-24 10:55:54,033 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=320, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2021-03-24 10:55:54,034 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 23 predicate places. [2021-03-24 10:55:54,034 INFO L480 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 320 flow [2021-03-24 10:55:54,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 10:55:54,034 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:54,034 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 10:55:54,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-24 10:55:54,034 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 10:55:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:54,035 INFO L82 PathProgramCache]: Analyzing trace with hash -155800029, now seen corresponding path program 4 times [2021-03-24 10:55:54,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:54,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286363358] [2021-03-24 10:55:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:54,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:54,093 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,093 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:54,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:54,102 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,104 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:54,112 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,112 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-24 10:55:54,123 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,124 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-03-24 10:55:54,136 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:54,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:54,142 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 10:55:54,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286363358] [2021-03-24 10:55:54,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:54,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-24 10:55:54,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975602127] [2021-03-24 10:55:54,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-24 10:55:54,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:54,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-24 10:55:54,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-03-24 10:55:54,146 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 164 [2021-03-24 10:55:54,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 320 flow. Second operand has 8 states, 8 states have (on average 124.25) internal successors, (994), 8 states have internal predecessors, (994), 0 states have call successors, (0), 0 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 10:55:54,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:54,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 164 [2021-03-24 10:55:54,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:54,294 INFO L129 PetriNetUnfolder]: 77/210 cut-off events. [2021-03-24 10:55:54,294 INFO L130 PetriNetUnfolder]: For 826/834 co-relation queries the response was YES. [2021-03-24 10:55:54,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 210 events. 77/210 cut-off events. For 826/834 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1004 event pairs, 8 based on Foata normal form. 10/211 useless extension candidates. Maximal degree in co-relation 977. Up to 96 conditions per place. [2021-03-24 10:55:54,297 INFO L132 encePairwiseOnDemand]: 156/164 looper letters, 23 selfloop transitions, 12 changer transitions 5/61 dead transitions. [2021-03-24 10:55:54,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 61 transitions, 505 flow [2021-03-24 10:55:54,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-24 10:55:54,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-03-24 10:55:54,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1010 transitions. [2021-03-24 10:55:54,299 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7698170731707317 [2021-03-24 10:55:54,300 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1010 transitions. [2021-03-24 10:55:54,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1010 transitions. [2021-03-24 10:55:54,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:54,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1010 transitions. [2021-03-24 10:55:54,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 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 10:55:54,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 10:55:54,305 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 10:55:54,305 INFO L185 Difference]: Start difference. First operand has 68 places, 51 transitions, 320 flow. Second operand 8 states and 1010 transitions. [2021-03-24 10:55:54,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 61 transitions, 505 flow [2021-03-24 10:55:54,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 473 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-03-24 10:55:54,309 INFO L241 Difference]: Finished difference. Result has 71 places, 53 transitions, 358 flow [2021-03-24 10:55:54,310 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=358, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2021-03-24 10:55:54,310 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 26 predicate places. [2021-03-24 10:55:54,310 INFO L480 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 358 flow [2021-03-24 10:55:54,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 124.25) internal successors, (994), 8 states have internal predecessors, (994), 0 states have call successors, (0), 0 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 10:55:54,310 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:54,311 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 10:55:54,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-24 10:55:54,311 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 10:55:54,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:54,311 INFO L82 PathProgramCache]: Analyzing trace with hash 986756400, now seen corresponding path program 1 times [2021-03-24 10:55:54,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:54,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493979774] [2021-03-24 10:55:54,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:54,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,378 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:54,378 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:54,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:54,388 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,389 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:54,397 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,398 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 10:55:54,414 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,415 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-03-24 10:55:54,417 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,418 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-03-24 10:55:54,438 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,438 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 10:55:54,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,459 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-03-24 10:55:54,481 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:54,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:54,487 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 10:55:54,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493979774] [2021-03-24 10:55:54,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:54,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 10:55:54,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26045199] [2021-03-24 10:55:54,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 10:55:54,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:54,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 10:55:54,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-03-24 10:55:54,489 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 164 [2021-03-24 10:55:54,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 358 flow. Second operand has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 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 10:55:54,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:54,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 164 [2021-03-24 10:55:54,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:54,696 INFO L129 PetriNetUnfolder]: 75/206 cut-off events. [2021-03-24 10:55:54,696 INFO L130 PetriNetUnfolder]: For 1060/1068 co-relation queries the response was YES. [2021-03-24 10:55:54,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 206 events. 75/206 cut-off events. For 1060/1068 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 976 event pairs, 4 based on Foata normal form. 9/207 useless extension candidates. Maximal degree in co-relation 1021. Up to 99 conditions per place. [2021-03-24 10:55:54,699 INFO L132 encePairwiseOnDemand]: 153/164 looper letters, 22 selfloop transitions, 15 changer transitions 2/60 dead transitions. [2021-03-24 10:55:54,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 60 transitions, 507 flow [2021-03-24 10:55:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-24 10:55:54,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-03-24 10:55:54,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1391 transitions. [2021-03-24 10:55:54,702 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7710643015521065 [2021-03-24 10:55:54,702 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1391 transitions. [2021-03-24 10:55:54,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1391 transitions. [2021-03-24 10:55:54,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:54,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1391 transitions. [2021-03-24 10:55:54,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 126.45454545454545) internal successors, (1391), 11 states have internal predecessors, (1391), 0 states have call successors, (0), 0 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 10:55:54,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 164.0) internal successors, (1968), 12 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 10:55:54,709 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 164.0) internal successors, (1968), 12 states have internal predecessors, (1968), 0 states have call successors, (0), 0 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 10:55:54,709 INFO L185 Difference]: Start difference. First operand has 71 places, 53 transitions, 358 flow. Second operand 11 states and 1391 transitions. [2021-03-24 10:55:54,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 60 transitions, 507 flow [2021-03-24 10:55:54,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 60 transitions, 469 flow, removed 15 selfloop flow, removed 5 redundant places. [2021-03-24 10:55:54,714 INFO L241 Difference]: Finished difference. Result has 77 places, 54 transitions, 383 flow [2021-03-24 10:55:54,714 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=383, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2021-03-24 10:55:54,714 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 32 predicate places. [2021-03-24 10:55:54,714 INFO L480 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 383 flow [2021-03-24 10:55:54,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 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 10:55:54,715 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:54,715 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 10:55:54,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-03-24 10:55:54,715 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 10:55:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:54,716 INFO L82 PathProgramCache]: Analyzing trace with hash 78144998, now seen corresponding path program 1 times [2021-03-24 10:55:54,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:54,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605650725] [2021-03-24 10:55:54,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:54,747 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:54,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:54,751 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 10:55:54,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:55:54,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:54,758 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 10:55:54,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605650725] [2021-03-24 10:55:54,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:54,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:55:54,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755459646] [2021-03-24 10:55:54,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:55:54,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:54,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:55:54,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:55:54,760 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 164 [2021-03-24 10:55:54,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 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 10:55:54,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:54,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 164 [2021-03-24 10:55:54,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:54,836 INFO L129 PetriNetUnfolder]: 162/375 cut-off events. [2021-03-24 10:55:54,836 INFO L130 PetriNetUnfolder]: For 1581/1752 co-relation queries the response was YES. [2021-03-24 10:55:54,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 375 events. 162/375 cut-off events. For 1581/1752 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2092 event pairs, 44 based on Foata normal form. 74/394 useless extension candidates. Maximal degree in co-relation 1464. Up to 161 conditions per place. [2021-03-24 10:55:54,840 INFO L132 encePairwiseOnDemand]: 158/164 looper letters, 12 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2021-03-24 10:55:54,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 65 transitions, 445 flow [2021-03-24 10:55:54,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:55:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:55:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 690 transitions. [2021-03-24 10:55:54,842 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8414634146341463 [2021-03-24 10:55:54,843 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 690 transitions. [2021-03-24 10:55:54,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 690 transitions. [2021-03-24 10:55:54,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:54,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 690 transitions. [2021-03-24 10:55:54,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 10:55:54,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 10:55:54,858 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 10:55:54,859 INFO L185 Difference]: Start difference. First operand has 77 places, 54 transitions, 383 flow. Second operand 5 states and 690 transitions. [2021-03-24 10:55:54,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 65 transitions, 445 flow [2021-03-24 10:55:54,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 65 transitions, 410 flow, removed 6 selfloop flow, removed 9 redundant places. [2021-03-24 10:55:54,864 INFO L241 Difference]: Finished difference. Result has 73 places, 61 transitions, 416 flow [2021-03-24 10:55:54,865 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2021-03-24 10:55:54,865 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 28 predicate places. [2021-03-24 10:55:54,865 INFO L480 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 416 flow [2021-03-24 10:55:54,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 0 states have call successors, (0), 0 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 10:55:54,865 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:54,866 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 10:55:54,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-03-24 10:55:54,866 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 10:55:54,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:54,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1714170371, now seen corresponding path program 1 times [2021-03-24 10:55:54,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:54,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782655474] [2021-03-24 10:55:54,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:54,919 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:54,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,921 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:54,923 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,924 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-24 10:55:54,929 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:54,930 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-03-24 10:55:54,939 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.5 percent of original size [2021-03-24 10:55:54,941 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-03-24 10:55:54,962 INFO L142 QuantifierPusher]: treesize reduction 10, result has 83.6 percent of original size [2021-03-24 10:55:54,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-03-24 10:55:54,988 INFO L142 QuantifierPusher]: treesize reduction 10, result has 82.8 percent of original size [2021-03-24 10:55:54,992 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-03-24 10:55:55,018 INFO L142 QuantifierPusher]: treesize reduction 1, result has 97.9 percent of original size [2021-03-24 10:55:55,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-03-24 10:55:55,054 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:55,055 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:55,064 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 10:55:55,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782655474] [2021-03-24 10:55:55,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:55,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-03-24 10:55:55,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143343104] [2021-03-24 10:55:55,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-24 10:55:55,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:55,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-24 10:55:55,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-03-24 10:55:55,070 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 164 [2021-03-24 10:55:55,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 416 flow. Second operand has 10 states, 10 states have (on average 124.1) internal successors, (1241), 10 states have internal predecessors, (1241), 0 states have call successors, (0), 0 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 10:55:55,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:55,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 164 [2021-03-24 10:55:55,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:55,248 INFO L129 PetriNetUnfolder]: 161/408 cut-off events. [2021-03-24 10:55:55,248 INFO L130 PetriNetUnfolder]: For 1936/2101 co-relation queries the response was YES. [2021-03-24 10:55:55,250 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 408 events. 161/408 cut-off events. For 1936/2101 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2464 event pairs, 33 based on Foata normal form. 30/397 useless extension candidates. Maximal degree in co-relation 1843. Up to 187 conditions per place. [2021-03-24 10:55:55,252 INFO L132 encePairwiseOnDemand]: 156/164 looper letters, 25 selfloop transitions, 14 changer transitions 0/67 dead transitions. [2021-03-24 10:55:55,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 565 flow [2021-03-24 10:55:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:55:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:55:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1130 transitions. [2021-03-24 10:55:55,256 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.7655826558265583 [2021-03-24 10:55:55,256 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1130 transitions. [2021-03-24 10:55:55,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1130 transitions. [2021-03-24 10:55:55,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:55,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1130 transitions. [2021-03-24 10:55:55,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 125.55555555555556) internal successors, (1130), 9 states have internal predecessors, (1130), 0 states have call successors, (0), 0 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 10:55:55,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:55,262 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:55,262 INFO L185 Difference]: Start difference. First operand has 73 places, 61 transitions, 416 flow. Second operand 9 states and 1130 transitions. [2021-03-24 10:55:55,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 565 flow [2021-03-24 10:55:55,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 67 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-03-24 10:55:55,268 INFO L241 Difference]: Finished difference. Result has 83 places, 63 transitions, 491 flow [2021-03-24 10:55:55,268 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=491, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2021-03-24 10:55:55,268 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 38 predicate places. [2021-03-24 10:55:55,269 INFO L480 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 491 flow [2021-03-24 10:55:55,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 124.1) internal successors, (1241), 10 states have internal predecessors, (1241), 0 states have call successors, (0), 0 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 10:55:55,269 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:55,269 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 10:55:55,269 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-03-24 10:55:55,269 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 10:55:55,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:55,270 INFO L82 PathProgramCache]: Analyzing trace with hash 894940930, now seen corresponding path program 1 times [2021-03-24 10:55:55,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:55,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120254809] [2021-03-24 10:55:55,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:55,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:55,318 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,318 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:55,321 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:55,325 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 10:55:55,326 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:55:55,332 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,332 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:55,332 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 10:55:55,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120254809] [2021-03-24 10:55:55,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:55,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-24 10:55:55,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48997153] [2021-03-24 10:55:55,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:55:55,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:55,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:55:55,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:55:55,334 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 164 [2021-03-24 10:55:55,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 491 flow. Second operand has 5 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 10:55:55,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:55,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 164 [2021-03-24 10:55:55,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:55,422 INFO L129 PetriNetUnfolder]: 114/313 cut-off events. [2021-03-24 10:55:55,423 INFO L130 PetriNetUnfolder]: For 1742/2962 co-relation queries the response was YES. [2021-03-24 10:55:55,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 313 events. 114/313 cut-off events. For 1742/2962 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 1742 event pairs, 9 based on Foata normal form. 164/439 useless extension candidates. Maximal degree in co-relation 1312. Up to 168 conditions per place. [2021-03-24 10:55:55,426 INFO L132 encePairwiseOnDemand]: 158/164 looper letters, 8 selfloop transitions, 15 changer transitions 7/67 dead transitions. [2021-03-24 10:55:55,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 67 transitions, 532 flow [2021-03-24 10:55:55,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-24 10:55:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-03-24 10:55:55,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 966 transitions. [2021-03-24 10:55:55,429 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8414634146341463 [2021-03-24 10:55:55,429 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 966 transitions. [2021-03-24 10:55:55,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 966 transitions. [2021-03-24 10:55:55,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:55,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 966 transitions. [2021-03-24 10:55:55,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 10:55:55,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 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 10:55:55,433 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 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 10:55:55,434 INFO L185 Difference]: Start difference. First operand has 83 places, 63 transitions, 491 flow. Second operand 7 states and 966 transitions. [2021-03-24 10:55:55,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 67 transitions, 532 flow [2021-03-24 10:55:55,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 67 transitions, 450 flow, removed 21 selfloop flow, removed 12 redundant places. [2021-03-24 10:55:55,440 INFO L241 Difference]: Finished difference. Result has 80 places, 58 transitions, 396 flow [2021-03-24 10:55:55,440 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=80, PETRI_TRANSITIONS=58} [2021-03-24 10:55:55,440 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 35 predicate places. [2021-03-24 10:55:55,440 INFO L480 AbstractCegarLoop]: Abstraction has has 80 places, 58 transitions, 396 flow [2021-03-24 10:55:55,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 134.8) internal successors, (674), 5 states have internal predecessors, (674), 0 states have call successors, (0), 0 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 10:55:55,440 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:55,441 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 10:55:55,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-03-24 10:55:55,441 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 10:55:55,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:55,441 INFO L82 PathProgramCache]: Analyzing trace with hash 530333456, now seen corresponding path program 1 times [2021-03-24 10:55:55,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:55,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028200160] [2021-03-24 10:55:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:55,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,486 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:55,486 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:55,489 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:55,490 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:55,493 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 10:55:55,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028200160] [2021-03-24 10:55:55,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:55,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-24 10:55:55,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613538135] [2021-03-24 10:55:55,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-24 10:55:55,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:55,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-24 10:55:55,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-24 10:55:55,495 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 164 [2021-03-24 10:55:55,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 58 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:55:55,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:55,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 164 [2021-03-24 10:55:55,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:55,555 INFO L129 PetriNetUnfolder]: 101/323 cut-off events. [2021-03-24 10:55:55,555 INFO L130 PetriNetUnfolder]: For 1703/2120 co-relation queries the response was YES. [2021-03-24 10:55:55,556 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 323 events. 101/323 cut-off events. For 1703/2120 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1978 event pairs, 13 based on Foata normal form. 23/314 useless extension candidates. Maximal degree in co-relation 1491. Up to 185 conditions per place. [2021-03-24 10:55:55,558 INFO L132 encePairwiseOnDemand]: 160/164 looper letters, 5 selfloop transitions, 3 changer transitions 2/61 dead transitions. [2021-03-24 10:55:55,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 61 transitions, 450 flow [2021-03-24 10:55:55,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:55:55,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:55:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 721 transitions. [2021-03-24 10:55:55,559 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8792682926829268 [2021-03-24 10:55:55,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 721 transitions. [2021-03-24 10:55:55,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 721 transitions. [2021-03-24 10:55:55,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:55,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 721 transitions. [2021-03-24 10:55:55,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 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 10:55:55,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 10:55:55,562 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 10:55:55,562 INFO L185 Difference]: Start difference. First operand has 80 places, 58 transitions, 396 flow. Second operand 5 states and 721 transitions. [2021-03-24 10:55:55,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 61 transitions, 450 flow [2021-03-24 10:55:55,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 61 transitions, 375 flow, removed 25 selfloop flow, removed 7 redundant places. [2021-03-24 10:55:55,568 INFO L241 Difference]: Finished difference. Result has 78 places, 58 transitions, 346 flow [2021-03-24 10:55:55,568 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=78, PETRI_TRANSITIONS=58} [2021-03-24 10:55:55,568 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2021-03-24 10:55:55,568 INFO L480 AbstractCegarLoop]: Abstraction has has 78 places, 58 transitions, 346 flow [2021-03-24 10:55:55,568 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-24 10:55:55,568 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:55,568 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] [2021-03-24 10:55:55,568 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-03-24 10:55:55,568 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 10:55:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:55,569 INFO L82 PathProgramCache]: Analyzing trace with hash -156698515, now seen corresponding path program 1 times [2021-03-24 10:55:55,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:55,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110077186] [2021-03-24 10:55:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:55,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,612 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:55,613 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:55,616 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:55,620 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,620 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:55,625 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-03-24 10:55:55,626 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-03-24 10:55:55,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,634 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:55,634 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 10:55:55,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110077186] [2021-03-24 10:55:55,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:55,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-24 10:55:55,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779406707] [2021-03-24 10:55:55,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-24 10:55:55,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:55,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-24 10:55:55,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-24 10:55:55,638 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 164 [2021-03-24 10:55:55,639 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 58 transitions, 346 flow. Second operand has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 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 10:55:55,639 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:55,639 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 164 [2021-03-24 10:55:55,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:55,785 INFO L129 PetriNetUnfolder]: 129/332 cut-off events. [2021-03-24 10:55:55,785 INFO L130 PetriNetUnfolder]: For 1305/2670 co-relation queries the response was YES. [2021-03-24 10:55:55,787 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 332 events. 129/332 cut-off events. For 1305/2670 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 1949 event pairs, 0 based on Foata normal form. 197/475 useless extension candidates. Maximal degree in co-relation 1270. Up to 101 conditions per place. [2021-03-24 10:55:55,788 INFO L132 encePairwiseOnDemand]: 158/164 looper letters, 5 selfloop transitions, 19 changer transitions 6/65 dead transitions. [2021-03-24 10:55:55,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 65 transitions, 438 flow [2021-03-24 10:55:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-24 10:55:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-03-24 10:55:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1236 transitions. [2021-03-24 10:55:55,790 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8373983739837398 [2021-03-24 10:55:55,790 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1236 transitions. [2021-03-24 10:55:55,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1236 transitions. [2021-03-24 10:55:55,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:55,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1236 transitions. [2021-03-24 10:55:55,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.33333333333334) internal successors, (1236), 9 states have internal predecessors, (1236), 0 states have call successors, (0), 0 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 10:55:55,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:55,795 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 164.0) internal successors, (1640), 10 states have internal predecessors, (1640), 0 states have call successors, (0), 0 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 10:55:55,795 INFO L185 Difference]: Start difference. First operand has 78 places, 58 transitions, 346 flow. Second operand 9 states and 1236 transitions. [2021-03-24 10:55:55,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 65 transitions, 438 flow [2021-03-24 10:55:55,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 65 transitions, 403 flow, removed 13 selfloop flow, removed 6 redundant places. [2021-03-24 10:55:55,799 INFO L241 Difference]: Finished difference. Result has 81 places, 57 transitions, 362 flow [2021-03-24 10:55:55,800 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=362, PETRI_PLACES=81, PETRI_TRANSITIONS=57} [2021-03-24 10:55:55,800 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 36 predicate places. [2021-03-24 10:55:55,800 INFO L480 AbstractCegarLoop]: Abstraction has has 81 places, 57 transitions, 362 flow [2021-03-24 10:55:55,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 134.83333333333334) internal successors, (809), 6 states have internal predecessors, (809), 0 states have call successors, (0), 0 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 10:55:55,801 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:55,801 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 10:55:55,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-03-24 10:55:55,801 INFO L428 AbstractCegarLoop]: === Iteration 17 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:55:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:55,801 INFO L82 PathProgramCache]: Analyzing trace with hash -407994543, now seen corresponding path program 1 times [2021-03-24 10:55:55,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:55,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015104819] [2021-03-24 10:55:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-24 10:55:55,844 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-24 10:55:55,845 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,845 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:55,848 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-24 10:55:55,848 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-24 10:55:55,852 INFO L142 QuantifierPusher]: treesize reduction 9, result has 30.8 percent of original size [2021-03-24 10:55:55,852 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-03-24 10:55:55,856 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 10:55:55,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015104819] [2021-03-24 10:55:55,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-24 10:55:55,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-24 10:55:55,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514013468] [2021-03-24 10:55:55,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-24 10:55:55,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-24 10:55:55,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-24 10:55:55,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-24 10:55:55,861 INFO L508 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 164 [2021-03-24 10:55:55,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 57 transitions, 362 flow. Second operand has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 10:55:55,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-03-24 10:55:55,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 164 [2021-03-24 10:55:55,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-03-24 10:55:55,918 INFO L129 PetriNetUnfolder]: 61/227 cut-off events. [2021-03-24 10:55:55,918 INFO L130 PetriNetUnfolder]: For 1112/1275 co-relation queries the response was YES. [2021-03-24 10:55:55,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 227 events. 61/227 cut-off events. For 1112/1275 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 1297 event pairs, 0 based on Foata normal form. 12/219 useless extension candidates. Maximal degree in co-relation 900. Up to 80 conditions per place. [2021-03-24 10:55:55,920 INFO L132 encePairwiseOnDemand]: 160/164 looper letters, 5 selfloop transitions, 1 changer transitions 13/59 dead transitions. [2021-03-24 10:55:55,920 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 59 transitions, 386 flow [2021-03-24 10:55:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-24 10:55:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-03-24 10:55:55,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2021-03-24 10:55:55,922 INFO L553 CegarLoopForPetriNet]: DFA transition density 0.8524390243902439 [2021-03-24 10:55:55,922 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2021-03-24 10:55:55,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2021-03-24 10:55:55,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-03-24 10:55:55,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2021-03-24 10:55:55,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 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 10:55:55,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 10:55:55,929 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 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 10:55:55,929 INFO L185 Difference]: Start difference. First operand has 81 places, 57 transitions, 362 flow. Second operand 5 states and 699 transitions. [2021-03-24 10:55:55,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 59 transitions, 386 flow [2021-03-24 10:55:55,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 312 flow, removed 17 selfloop flow, removed 12 redundant places. [2021-03-24 10:55:55,934 INFO L241 Difference]: Finished difference. Result has 75 places, 46 transitions, 229 flow [2021-03-24 10:55:55,934 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=75, PETRI_TRANSITIONS=46} [2021-03-24 10:55:55,934 INFO L343 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2021-03-24 10:55:55,934 INFO L480 AbstractCegarLoop]: Abstraction has has 75 places, 46 transitions, 229 flow [2021-03-24 10:55:55,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 139.2) internal successors, (696), 5 states have internal predecessors, (696), 0 states have call successors, (0), 0 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 10:55:55,935 INFO L255 CegarLoopForPetriNet]: Found error trace [2021-03-24 10:55:55,935 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 10:55:55,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-03-24 10:55:55,935 INFO L428 AbstractCegarLoop]: === Iteration 18 === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-24 10:55:55,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-24 10:55:55,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1595085613, now seen corresponding path program 2 times [2021-03-24 10:55:55,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-24 10:55:55,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636096463] [2021-03-24 10:55:55,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-24 10:55:55,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:55:55,975 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:55:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-03-24 10:55:56,012 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-03-24 10:55:56,054 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-03-24 10:55:56,055 INFO L634 BasicCegarLoop]: Counterexample might be feasible [2021-03-24 10:55:56,056 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-03-24 10:55:56,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.03 10:55:56 BasicIcfg [2021-03-24 10:55:56,144 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-24 10:55:56,145 INFO L168 Benchmark]: Toolchain (without parser) took 15287.37 ms. Allocated memory was 329.3 MB in the beginning and 522.2 MB in the end (delta: 192.9 MB). Free memory was 291.6 MB in the beginning and 409.5 MB in the end (delta: -117.8 MB). Peak memory consumption was 75.5 MB. Max. memory is 16.0 GB. [2021-03-24 10:55:56,145 INFO L168 Benchmark]: CDTParser took 3.47 ms. Allocated memory is still 329.3 MB. Free memory was 310.3 MB in the beginning and 310.2 MB in the end (delta: 79.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-24 10:55:56,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.48 ms. Allocated memory is still 329.3 MB. Free memory was 291.5 MB in the beginning and 288.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-03-24 10:55:56,146 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.75 ms. Allocated memory is still 329.3 MB. Free memory was 288.8 MB in the beginning and 284.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-03-24 10:55:56,146 INFO L168 Benchmark]: Boogie Preprocessor took 28.66 ms. Allocated memory is still 329.3 MB. Free memory was 284.6 MB in the beginning and 282.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-24 10:55:56,150 INFO L168 Benchmark]: RCFGBuilder took 1871.18 ms. Allocated memory is still 329.3 MB. Free memory was 282.5 MB in the beginning and 271.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 172.0 MB. Max. memory is 16.0 GB. [2021-03-24 10:55:56,150 INFO L168 Benchmark]: TraceAbstraction took 12763.95 ms. Allocated memory was 329.3 MB in the beginning and 522.2 MB in the end (delta: 192.9 MB). Free memory was 270.0 MB in the beginning and 409.5 MB in the end (delta: -139.5 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.0 GB. [2021-03-24 10:55:56,151 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.47 ms. Allocated memory is still 329.3 MB. Free memory was 310.3 MB in the beginning and 310.2 MB in the end (delta: 79.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 556.48 ms. Allocated memory is still 329.3 MB. Free memory was 291.5 MB in the beginning and 288.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.75 ms. Allocated memory is still 329.3 MB. Free memory was 288.8 MB in the beginning and 284.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 28.66 ms. Allocated memory is still 329.3 MB. Free memory was 284.6 MB in the beginning and 282.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 1871.18 ms. Allocated memory is still 329.3 MB. Free memory was 282.5 MB in the beginning and 271.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 172.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 12763.95 ms. Allocated memory was 329.3 MB in the beginning and 522.2 MB in the end (delta: 192.9 MB). Free memory was 270.0 MB in the beginning and 409.5 MB in the end (delta: -139.5 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: 7734.2ms, 101 PlacesBefore, 45 PlacesAfterwards, 93 TransitionsBefore, 36 TransitionsAfterwards, 1578 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 68 TotalNumberOfCompositions, 2725 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1254, positive: 1173, positive conditional: 0, positive unconditional: 1173, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 791, positive: 769, positive conditional: 0, positive unconditional: 769, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 791, positive: 769, positive conditional: 0, positive unconditional: 769, negative: 22, negative conditional: 0, negative unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1254, positive: 404, positive conditional: 0, positive unconditional: 404, negative: 59, negative conditional: 0, negative unconditional: 59, unknown: 791, unknown conditional: 0, unknown unconditional: 791] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 45, Positive conditional cache size: 0, Positive unconditional cache size: 45, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0] [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; VAL [__unbuffered_cnt=0, __unbuffered_p2_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$r_buff0_thd0; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$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_p2_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_p2_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$read_delayed; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$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$w_buff0_used; VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, main$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; [L813] 0 pthread_t t1492; [L814] FCALL, FORK 0 pthread_create(&t1492, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L815] 0 pthread_t t1493; [L816] FCALL, FORK 0 pthread_create(&t1493, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L817] 0 pthread_t t1494; [L818] FCALL, FORK 0 pthread_create(&t1494, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=0] [L776] 3 y$w_buff1 = y$w_buff0 [L777] 3 y$w_buff0 = 2 [L778] 3 y$w_buff1_used = y$w_buff0_used [L779] 3 y$w_buff0_used = (_Bool)1 [L18] COND FALSE 3 !(!expression) [L781] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L782] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L783] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L784] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L785] 3 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L788] 3 __unbuffered_p2_EAX = z VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=0] [L741] 1 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L744] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L756] 2 x = 2 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L759] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, z=1] [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L762] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L762] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L762] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L763] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L763] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L764] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L764] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L765] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L765] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L766] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L766] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 [L791] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L791] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L792] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L792] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L793] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L793] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L794] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L794] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L795] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L795] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 [L749] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L751] 1 return 0; [L769] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L771] 2 return 0; [L798] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L800] 3 return 0; [L820] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L3] COND FALSE 0 !(!cond) [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L824] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L824] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L824] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L825] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L825] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L826] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L826] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L827] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L827] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L828] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L828] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 [L831] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L832] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L833] 0 y$flush_delayed = weak$$choice2 [L834] 0 y$mem_tmp = y [L835] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L835] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L836] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L836] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0) [L836] EXPR 0 weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L836] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L837] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L837] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1) [L837] EXPR 0 weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L837] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L838] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L838] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used) [L838] EXPR 0 weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L838] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L839] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L839] EXPR 0 weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L839] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L840] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L840] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0) [L840] EXPR 0 weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L840] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L841] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0) [L841] EXPR 0 weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L841] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L842] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p2_EAX == 0) [L843] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L843] 0 y = y$flush_delayed ? y$mem_tmp : y [L844] 0 y$flush_delayed = (_Bool)0 [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=51, weak$$choice2=0, x=2, y=2, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, z=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 95 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 12569.0ms, OverallIterations: 18, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 2418.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7831.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 113 SDtfs, 179 SDslu, 175 SDs, 0 SdLazy, 652 SolverSat, 220 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 727.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 936.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=491occurred in iteration=13, InterpolantAutomatonStates: 128, 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: 51.9ms SsaConstructionTime, 451.9ms SatisfiabilityAnalysisTime, 1490.0ms InterpolantComputationTime, 414 NumberOfCodeBlocks, 414 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 367 ConstructedInterpolants, 0 QuantifiedInterpolants, 2013 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...